CN110374554B - Integral rotatable pipe scraping device - Google Patents
Integral rotatable pipe scraping device Download PDFInfo
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- CN110374554B CN110374554B CN201910713342.0A CN201910713342A CN110374554B CN 110374554 B CN110374554 B CN 110374554B CN 201910713342 A CN201910713342 A CN 201910713342A CN 110374554 B CN110374554 B CN 110374554B
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- 238000007790 scraping Methods 0.000 title claims abstract description 72
- 238000003801 milling Methods 0.000 claims abstract description 87
- 229910000831 Steel Inorganic materials 0.000 claims description 65
- 239000010959 steel Substances 0.000 claims description 65
- 238000007789 sealing Methods 0.000 claims description 33
- 238000000227 grinding Methods 0.000 claims description 7
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract description 4
- 235000017491 Bambusa tulda Nutrition 0.000 abstract description 4
- 241001330002 Bambuseae Species 0.000 abstract description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract description 4
- 239000011425 bamboo Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 239000004568 cement Substances 0.000 description 5
- 238000005553 drilling Methods 0.000 description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
- E21B29/002—Cutting, e.g. milling, a pipe with a cutter rotating along the circumference of the pipe
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/02—Scrapers specially adapted therefor
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention relates to the technical field of downhole tools, in particular to an integral rotatable pipe scraping device which comprises a mandrel, an upper milling barrel, a first bearing outer barrel, an upper righting barrel, a second bearing outer barrel, a scraper barrel, a third bearing outer barrel, a lower righting barrel, a fourth bearing outer barrel and a lower milling barrel, wherein an upper limiting component is fixedly arranged on the outer side of the upper part of the mandrel, the upper limiting component comprises a limiting ring, a limiting barrel and a countersunk screw, and the limiting barrel is sleeved on the outer side of the upper part of the mandrel. The upper milling barrel is limited and arranged on the outer side of the upper part of the mandrel through the upper limiting device and the upper limiting ring, and the upper milling barrel rotates along with the mandrel through the arrangement of the first square key; through setting up first bearing urceolus, second bearing urceolus, third bearing urceolus and fourth bearing urceolus, prevent to right a section of thick bamboo, scraper section of thick bamboo and right a section of thick bamboo down and rotate along with the dabber on, have high-efficient, stable and labour saving and time saving's characteristics.
Description
Technical Field
The invention relates to the technical field of downhole tools, in particular to an integral rotatable pipe scraping device.
Background
After the drilling or workover of the oil and gas well is finished, a well completion procedure is needed, and various well completion tools such as a packer, a sliding sleeve, a ball seat and the like are put in order to control the flow direction and speed of downhole fluid. In order to improve the success rate of the tool running operation, such as the setting success rate of a packer, the setting position of the packer needs to be cleaned, and a pipe scraper can clean cement blocks, cement rings, hard wax, various salt crystals and deposits, perforation burrs, iron oxide and the like generated after the sleeve is corroded on the inner wall of the sleeve. In order to realize effective wall scraping operation, the conventional technical means is to put a milling tool into the well to drill and mill the underground cement plug, then put a drifting drilling tool assembly into the well to drift the well, and after the drifting operation is finished, put a pipe scraper into the well to scrape the wall of the technical casing. The existing pipe scraper is divided into a mechanical type pipe scraper and a hydraulic type pipe scraper, the two pipe scraper scrapers are multiple pieces and are arranged on a pipe scraper body, the pipe scraper is supported by a spring, the strength is low, the scraping effect is poor, particularly, a pipe column cannot rotate in the scraping process, so that the pipe scraper cannot enter a well together with other rotating tools, the pipe scraper can only independently drill one time every time, and the operation time of deep wells and ultra-deep wells is longer. How to realize the combination of a pipe scraping process, a drilling and plugging process and the like becomes one of the technical problems to be solved urgently in deep wells and ultra-deep wells.
Disclosure of Invention
The invention provides an integral rotatable pipe scraping device, which solves the problem that the existing pipe scraper cannot enter a well simultaneously with a rotary downhole tool.
The technical scheme of the invention is realized by the following measures: an integral rotatable pipe scraping device comprises a mandrel, an upper grinding and milling barrel, a first bearing outer barrel, an upper righting barrel, a second bearing outer barrel, a scraper barrel, a third bearing outer barrel, a lower righting barrel, a fourth bearing outer barrel and a lower grinding and milling barrel, wherein an upper limiting component is fixedly installed on the outer side of the upper portion of the mandrel and comprises a limiting ring, a limiting barrel and a countersunk screw; the lower limiting assembly is fixedly arranged on the outer side of the lower part of the mandrel, has the same structure as the upper limiting assembly and is distributed in a mirror symmetry manner; an upper outer ring groove is arranged on the outer side of the upper part of the mandrel corresponding to the position below the upper limiting component, an upper limiting ring is arranged in the upper outer ring groove, the upper limiting ring comprises two limiting semi-rings with opposite openings, a lower outer ring groove is arranged on the outer side of the lower part of the mandrel corresponding to the position above the lower limiting component, a lower limiting ring is arranged in the lower outer ring groove, the lower limiting ring comprises two limiting semi-rings with opposite openings, an upper milling barrel is sleeved on the outer side of the upper part of the mandrel corresponding to the position between the upper limiting component and the upper outer ring groove, at least one first outer key groove is uniformly distributed on the outer side of the upper part of the mandrel corresponding to the position above the upper milling barrel along the circumference, a first inner key groove is arranged on the inner side of the upper end of the upper milling barrel corresponding to the position of each first outer key groove, a first square key with the outer end positioned in the first inner key groove corresponding to the position is arranged in, the outer end of the upper limiting ring is positioned in the upper inner ring groove; a lower milling barrel is sleeved on the outer side of the lower part of the mandrel corresponding to the position between the lower limiting component and the lower outer annular groove, at least one second outer key groove is uniformly distributed on the outer side of the lower part of the mandrel corresponding to the lower end position of the lower milling barrel along the circumference, a second inner key groove is arranged on the inner side of the lower end of the lower milling barrel corresponding to each second outer key groove, a second square key with the outer end positioned in the second inner key groove corresponding to the position is arranged in each second outer key groove, a lower inner annular groove is arranged on the inner side of the upper end of the lower milling barrel corresponding to the position of the lower outer annular groove, and the outer end of the; the upper milling barrel comprises a first conical barrel section and a first straight barrel section which are sequentially and fixedly installed together from top to bottom, the first conical barrel section is in a round platform shape with a small top and a big bottom, a high-hardness wear-resistant layer is arranged on the outer side of the upper milling barrel, at least four straight grooves which are communicated up and down are uniformly distributed on the outer side of the upper milling barrel along the circumference, and the lower milling barrel and the upper milling barrel have the same structure and are distributed in a mirror symmetry manner; the outer side of the middle part of the mandrel, which corresponds to the position between the upper milling barrel and the lower milling barrel, is sequentially sleeved with a first bearing outer barrel, an upper centering barrel, a second bearing outer barrel, a scraper barrel, a third bearing outer barrel, a lower centering barrel and a fourth bearing outer barrel from top to bottom; at least two first grooves are uniformly distributed on the outer side of the lower end of the first bearing outer cylinder along the circumference, the upper end of the upper righting cylinder corresponding to each first groove position is provided with a first lug positioned in the first groove at the corresponding position, the outer side of the upper end of the second bearing outer cylinder is uniformly distributed with at least two second grooves along the circumference, the lower end of the upper righting cylinder corresponding to each second groove position is provided with a second lug positioned in the second groove at the corresponding position, the outer side of the lower end of the second bearing outer cylinder is uniformly distributed with at least two third grooves along the circumference, the upper end of the scraper cylinder corresponding to each third groove position is provided with a third lug positioned in the third groove at the corresponding position, the outer side of the upper end of the third bearing outer cylinder is uniformly distributed with at least two fourth grooves along the circumference, the lower end of the scraper cylinder corresponding to each fourth groove position is provided with a fourth lug positioned in the fourth groove at the corresponding position, and the outer side of the lower end of the, the upper end of the lower righting cylinder corresponding to each fifth groove position is provided with a fifth lug positioned in the corresponding fifth groove, the outer side of the lower end of the outer cylinder of the fourth bearing is uniformly provided with at least two sixth grooves along the circumference, and the lower end of the lower righting cylinder corresponding to each sixth groove position is provided with a sixth lug positioned in the corresponding sixth groove; at least two first mounting holes which are internally and externally communicated are uniformly distributed on the outer side of the middle part of the first bearing outer cylinder along the circumference, a first annular groove is arranged on the outer side of the upper part of the mandrel corresponding to the position of the first mounting hole, a first steel ball with the inner end positioned in the first annular groove is arranged in the first mounting hole, and a first plug with the inner end abutting against the outer end of the first steel ball is fixedly arranged in the first mounting hole; the upper righting cylinder comprises a second conical cylinder section, a second straight cylinder section and a third conical cylinder section which are fixedly installed together from top to bottom in sequence, the second conical cylinder section is in a circular truncated cone shape with a small top and a large bottom, the third conical cylinder section is in a circular truncated cone shape with a large top and a small bottom, and at least four first inclined grooves which are communicated up and down are uniformly distributed on the outer side of the upper righting cylinder along the circumference; at least two second mounting holes which are internally and externally communicated are uniformly distributed on the outer side of the middle part of the outer cylinder of the second bearing along the circumference, a second annular groove is arranged on the outer side of the upper part of the mandrel corresponding to the position of the second mounting hole, a second steel ball with the inner end positioned in the second annular groove is arranged in the second mounting hole, and a second plug with the inner end abutting against the outer end of the second steel ball is fixedly arranged in the second mounting hole; at least two groups of well wall scrapers are distributed at the outer side of the middle part of the scraper cylinder at intervals up and down; at least two third mounting holes which are internally and externally communicated are uniformly distributed on the outer side of the middle part of the outer cylinder of the third bearing along the circumference, a third ring groove is arranged on the outer side of the lower part of the mandrel corresponding to the position of the third mounting hole, a third steel ball with the inner end positioned in the third ring groove is arranged in the third mounting hole, and a third plug with the inner end abutting against the outer end of the third steel ball is fixedly arranged in the third mounting hole; the lower righting cylinder comprises a fourth conical cylinder section, a third straight cylinder section and a fifth conical cylinder section which are fixedly installed together from top to bottom in sequence, the fourth conical cylinder section is in a circular truncated cone shape with a small top and a large bottom, the fifth conical cylinder section is in a circular truncated cone shape with a large top and a small bottom, and at least four second inclined grooves which are communicated up and down are uniformly distributed on the outer side of the lower righting cylinder along the circumference; at least two fourth mounting holes which are internally and externally communicated are uniformly distributed on the outer side of the middle part of the outer cylinder of the fourth bearing along the circumference, a fourth annular groove is arranged on the outer side of the lower part of the mandrel corresponding to the position of the fourth mounting hole, a fourth steel ball with the inner end positioned in the fourth annular groove is arranged in the fourth mounting hole, and a fourth plug with the inner end abutting against the outer end of the fourth steel ball is fixedly arranged in the fourth mounting hole.
The following is further optimization or/and improvement of the technical scheme of the invention:
the scraper cylinder can comprise an upper mounting part, an upper scraper cylinder, a middle scraper cylinder, a lower scraper cylinder and a lower mounting part which are fixedly mounted together from top to bottom in sequence, the upper end of the upper mounting part corresponding to each third groove position is provided with a third lug positioned in a corresponding third groove, and the lower end of the lower mounting part corresponding to each fourth groove position is provided with a fourth lug positioned in a corresponding fourth groove; the inner diameter of the upper mounting part is the same as that of the lower mounting part, the outer diameter of the upper mounting part is the same as that of the lower mounting part, the inner diameter of the upper scraping cylinder is larger than that of the upper mounting part, and the outer diameter of the upper scraping cylinder is smaller than that of the upper mounting part; the inner diameter of the upper scraping cylinder is the same as that of the lower scraping cylinder, the outer diameter of the upper scraping cylinder is the same as that of the lower scraping cylinder, the inner diameter of the middle scraping cylinder is larger than that of the upper scraping cylinder, and the outer diameter of the middle scraping cylinder is larger than that of the upper scraping cylinder; at least two groups of well wall scrapers are distributed on the outer side of the middle scraper cylinder at intervals up and down; six upper grooves which are communicated up and down are uniformly distributed on the outer side of the upper scraping cylinder along the circumference, inclined grooves which are communicated up and down are arranged on the outer side of the middle scraping cylinder corresponding to the lower end position of each upper groove, and lower grooves which are distributed in a staggered manner with the upper grooves are arranged on the outer side of the lower scraping cylinder corresponding to the lower end position of each inclined groove.
The upper part of the upper groove can be in a semicircular shape, the lower part of the upper groove is in an isosceles trapezoid shape, the groove width of the lower part of the upper groove is gradually reduced from top to bottom, the lower part of the lower groove is in a semicircular shape, the upper part of the lower groove is in an isosceles trapezoid shape, the groove width of the upper part of the lower groove is gradually increased from top to bottom, and the inclined groove is in a parallelogram shape; the width of the groove at the lower end of the upper groove, the width of the inclined groove and the width of the groove at the upper end of the lower groove are the same.
The bearing further comprises a clamping ring, a thrust disc and a thrust ring, a fifth ring groove is formed in the outer side of the mandrel corresponding to the lower end of the outer cylinder of the second bearing, an inner ring groove is formed in the inner side of the upper end of the upper mounting part, the clamping ring with the outer end located in the inner ring groove is arranged in the fifth ring groove, and the lower end of the outer cylinder of the second bearing is seated at the upper end of the clamping ring; a thrust disc and a thrust ring which are sleeved at corresponding positions outside the mandrel are sequentially arranged in the inner ring groove corresponding to the lower position of the clamping ring from top to bottom, and the lower end of the thrust ring is seated at the bottom of the inner ring groove; the snap ring is two semicircle rings, and the thrust dish is the ring, and the thrust ring is the ring that the up end was equipped with the fillet.
The sealing device can also comprise an O-shaped sealing ring, wherein the O-shaped sealing ring is arranged between the first bearing outer cylinder corresponding to the position above the first ring groove and the mandrel, and the O-shaped sealing ring is arranged between the first bearing outer cylinder corresponding to the position below the first ring groove and the mandrel; an O-shaped sealing ring is arranged between the second bearing outer cylinder corresponding to the position above the second annular groove and the mandrel, and an O-shaped sealing ring is arranged between the second bearing outer cylinder corresponding to the position below the second annular groove and the mandrel; an O-shaped sealing ring is arranged between the third bearing outer cylinder and the mandrel corresponding to the position above the third ring groove, and an O-shaped sealing ring is arranged between the third bearing outer cylinder and the mandrel corresponding to the position below the third ring groove; an O-shaped sealing ring is arranged between the fourth bearing outer cylinder corresponding to the upper position of the fourth ring groove and the mandrel, and an O-shaped sealing ring is arranged between the fourth bearing outer cylinder corresponding to the lower position of the fourth ring groove and the mandrel.
The inner end of the first plug can be provided with a first semispherical groove matched with the first steel ball, and the outer end of the first steel ball is positioned in the first semispherical groove; a second semispherical groove matched with the second steel ball is formed in the inner end of the second plug, and the outer end of the second steel ball is positioned in the second semispherical groove; a third semispherical groove matched with a third steel ball is formed in the inner end of the third plug, and the outer end of the third steel ball is positioned in the third semispherical groove; the inner end of the fourth plug is provided with a fourth semispherical groove matched with the fourth steel ball, and the outer end of the fourth steel ball is positioned in the fourth semispherical groove.
Three first outer key grooves can be uniformly distributed on the outer side of the upper part of the mandrel along the circumference; three second outer key grooves are uniformly distributed on the outer side of the lower part of the mandrel along the circumference; six straight grooves which are communicated up and down are uniformly distributed on the outer side of the upper milling cylinder along the circumference; six first inclined grooves which are communicated up and down are uniformly distributed on the outer side of the upper righting cylinder along the circumference; six second inclined grooves which are communicated up and down are uniformly distributed on the outer side of the lower righting cylinder along the circumference; nine groups of well wall scrapers are distributed on the outer side of the middle part of the scraper cylinder at intervals up and down.
The invention has reasonable and compact structure and ingenious conception, and the upper milling cylinder, the first bearing outer cylinder, the upper centering cylinder, the second bearing outer cylinder, the scraper cylinder, the third bearing outer cylinder, the lower centering cylinder, the fourth bearing outer cylinder and the lower milling cylinder are sequentially sleeved outside the mandrel from top to bottom, so that all parts are installed on the mandrel, and the influence on the integrity after the parts are installed on a plurality of shafts and different shafts are connected together in a threaded manner is avoided; the upper milling barrel is limited and installed on the outer side of the upper part of the mandrel through an upper limiting device and an upper limiting ring, and the upper milling barrel rotates along with the mandrel through arrangement of a first square key; the lower milling barrel is installed on the outer side of the lower part of the mandrel in a limiting mode through a lower limiting device and a lower limiting ring, and the lower milling barrel rotates along with the mandrel through a second square key; the upper centering cylinder, the scraper cylinder and the lower centering cylinder are prevented from rotating along with the mandrel by arranging the first bearing outer cylinder, the second bearing outer cylinder, the third bearing outer cylinder and the fourth bearing outer cylinder; the upper milling barrel and the lower milling barrel rotate along with the mandrel, so that the tube wall is milled by the upper milling barrel and the lower milling barrel, and the tube wall milling machine has the characteristics of high efficiency, stability, time saving and labor saving.
Drawings
FIG. 1 is a front sectional structural view of the preferred embodiment.
Fig. 2 is an enlarged schematic view of a portion a of fig. 1.
FIG. 3 is an enlarged sectional view of the structure at B-B in FIG. 1.
Fig. 4 is a front view semi-section enlarged structure schematic diagram of the scraper cylinder in fig. 1.
The codes in the figures are respectively: 1 is a mandrel, 2 is an upper milling barrel, 3 is a first bearing outer barrel, 4 is an upper righting barrel, 5 is a second bearing outer barrel, 6 is a borehole wall scraper, 7 is a third bearing outer barrel, 8 is a lower righting barrel, 9 is a fourth bearing outer barrel, 10 is a lower milling barrel, 11 is a straight groove, 12 is an O-shaped sealing ring, 13 is a first lug, 14 is a second lug, 15 is a third lug, 16 is a fourth lug, 17 is a fifth lug, 18 is a sixth lug, 19 is a first steel ball, 20 is a first plug, 21 is a first inclined groove, 22 is a second inclined groove, 23 is an upper mounting part, 24 is an upper scraping barrel, 25 is a middle scraping barrel, 26 is a lower scraping barrel, 27 is a lower mounting part, 28 is an upper groove, 29 is an inclined groove, 30 is a lower groove, 31 is a clamping ring, 32 is a stop push disc, 33 is a stop ring, 34 is a sunk screw, 35 is a limit ring, 36 is a limit ring, 37 is a lower limit ring, and 38 is a lower limit ring, 39 is a first key and 40 is a second key.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments may be determined according to the technical solutions and practical situations of the present invention.
In the present invention, for convenience of description, the description of the relative positional relationship of the components is described according to the layout pattern of fig. 1 of the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of fig. 1 of the specification.
The invention is further described with reference to the following examples and figures:
as shown in the attached figures 1, 2, 3 and 4, the integral rotatable pipe scraping device comprises a mandrel 1, an upper milling cylinder 2, a first bearing outer cylinder 3, an upper righting cylinder 4, a second bearing outer cylinder 5, a scraper cylinder, a third bearing outer cylinder 7, a lower righting cylinder 8, a fourth bearing outer cylinder 9 and a lower milling cylinder 10, wherein an upper limiting component is fixedly arranged on the outer side of the upper part of the mandrel 1, the upper limiting component comprises a limiting ring 35, a limiting cylinder 36 and a sunk screw 34, the outer side of the upper part of the mandrel 1 is sleeved with the limiting cylinder 36, the inner side of the lower end of the limiting cylinder 36 is provided with a limiting ring groove, an installation ring groove is formed in the outer side of the upper portion of the mandrel 1 corresponding to the position of the limiting ring groove, a limiting ring 35 with the outer end located in the limiting ring groove is arranged in the installation ring groove, the limiting ring 35 comprises two limiting half rings with opposite openings, and at least two countersunk head screws 34 capable of fixedly installing the limiting cylinder 36 and the limiting ring 35 together are evenly distributed on the outer side of the limiting cylinder 36 along the circumference; the lower limiting assembly is fixedly arranged on the outer side of the lower part of the mandrel 1, has the same structure as the upper limiting assembly and is distributed in a mirror symmetry manner; an upper outer ring groove is arranged on the outer side of the upper part of the mandrel 1 corresponding to the lower position of the upper limiting component, an upper limiting ring 37 is arranged in the upper outer ring groove, the upper limiting ring 37 comprises two limiting half rings with opposite openings, a lower outer ring groove is arranged on the outer side of the lower part of the mandrel 1 corresponding to the upper position of the lower limiting component, a lower limiting ring 38 is arranged in the lower outer ring groove, the lower limiting ring 38 comprises two limiting half rings with opposite openings, an upper milling barrel 2 is sleeved on the outer side of the upper part of the mandrel 1 corresponding to the position between the upper limiting component and the upper outer ring groove, at least one first outer key groove is uniformly distributed on the outer side of the upper part of the mandrel 1 corresponding to the upper end position of the upper milling barrel 2 along the circumference, a first inner key groove is arranged on the inner side of the upper end of the upper milling barrel 2 corresponding to each first outer key groove, a first square key 39 with the outer end positioned in the first inner key groove corresponding to the position is arranged in, the outer end of the upper limit ring 37 is positioned in the upper inner ring groove; a lower milling barrel 10 is sleeved on the outer side of the lower part of the mandrel 1 corresponding to the position between the lower limiting component and the lower outer ring groove, at least one second outer key groove is uniformly distributed on the outer side of the lower part of the mandrel 1 corresponding to the lower end position of the lower milling barrel 10 along the circumference, a second inner key groove is arranged on the inner side of the lower end of the lower milling barrel 10 corresponding to each second outer key groove, a second square key 40 with the outer end positioned in the second inner key groove corresponding to each second outer key groove is arranged in each second outer key groove, a lower inner ring groove is arranged on the inner side of the upper end of the lower milling barrel 10 corresponding to the lower outer ring groove, and the outer end of a lower limiting; the upper milling cylinder 2 comprises a first conical cylinder section and a first straight cylinder section which are sequentially and fixedly installed together from top to bottom, the first conical cylinder section is in a round table shape with a small top and a big bottom, a high-hardness wear-resistant layer is arranged on the outer side of the upper milling cylinder 2, at least four straight grooves 11 which are communicated up and down are uniformly distributed on the outer side of the upper milling cylinder 2 along the circumference, and the lower milling cylinder 10 and the upper milling cylinder 2 have the same structure and are distributed in mirror symmetry; the outer side of the middle part of the mandrel 1 corresponding to the position between the upper milling barrel 2 and the lower milling barrel 10 is sequentially sleeved with a first bearing outer barrel 3, an upper righting barrel 4, a second bearing outer barrel 5, a scraper barrel, a third bearing outer barrel 7, a lower righting barrel 8 and a fourth bearing outer barrel 9 from top to bottom; at least two first grooves are uniformly distributed on the outer side of the lower end of the first bearing outer cylinder 3 along the circumference, at least two second grooves are uniformly distributed on the outer side of the upper end of the second bearing outer cylinder 5 along the circumference, at least two second protrusions 14 positioned in the second grooves at the corresponding positions are arranged on the lower end of the upper righting cylinder 4 corresponding to the positions of the second grooves, at least two third grooves are uniformly distributed on the outer side of the lower end of the second bearing outer cylinder 5 along the circumference, at least one third protrusion 15 positioned in the third groove at the corresponding position is arranged on the upper end of the scraper cylinder corresponding to each third groove, at least two fourth grooves are uniformly distributed on the outer side of the upper end of the third bearing outer cylinder 7 along the circumference, at least two fourth protrusions 16 positioned in the fourth grooves at the corresponding positions are uniformly distributed on the lower end of the scraper cylinder corresponding to each fourth groove position, at least two fifth grooves are uniformly distributed on the outer side of the lower end of the third bearing outer cylinder 7 along the circumference, the upper end of the lower righting cylinder 8 corresponding to each fifth groove position is provided with a fifth lug 17 positioned in the corresponding fifth groove, the outer side of the lower end of the outer cylinder 9 of the fourth bearing is uniformly provided with at least two sixth grooves along the circumference, and the lower end of the lower righting cylinder 8 corresponding to each sixth groove position is provided with a sixth lug 18 positioned in the corresponding sixth groove; at least two first mounting holes which are internally and externally communicated are uniformly distributed on the outer side of the middle part of the first bearing outer cylinder 3 along the circumference, a first annular groove is arranged on the outer side of the upper part of the mandrel 1 corresponding to the position of the first mounting hole, a first steel ball 19 with the inner end positioned in the first annular groove is arranged in the first mounting hole, and a first plug 20 with the inner end abutting against the outer end of the first steel ball 19 is fixedly arranged in the first mounting hole; the upper righting cylinder 4 comprises a second conical cylinder section, a second straight cylinder section and a third conical cylinder section which are fixedly installed together from top to bottom in sequence, the second conical cylinder section is in a circular truncated cone shape with a small top and a large bottom, the third conical cylinder section is in a circular truncated cone shape with a large top and a small bottom, and at least four first inclined grooves 21 which are communicated up and down are uniformly distributed on the outer side of the upper righting cylinder 4 along the circumference; at least two second mounting holes which are internally and externally communicated are uniformly distributed on the outer side of the middle part of the second bearing outer cylinder 5 along the circumference, a second annular groove is arranged on the outer side of the upper part of the mandrel 1 corresponding to the position of the second mounting hole, a second steel ball with the inner end positioned in the second annular groove is arranged in the second mounting hole, and a second plug with the inner end abutting against the outer end of the second steel ball is fixedly arranged in the second mounting hole; at least two groups of well wall scrapers 6 are distributed at the outer side of the middle part of the scraper cylinder at intervals up and down; at least two third mounting holes which are internally and externally communicated are uniformly distributed on the outer side of the middle part of the outer cylinder 7 of the third bearing along the circumference, a third annular groove is arranged on the outer side of the lower part of the mandrel 1 corresponding to the position of the third mounting hole, a third steel ball with the inner end positioned in the third annular groove is arranged in the third mounting hole, and a third plug with the inner end abutting against the outer end of the third steel ball is fixedly arranged in the third mounting hole; the lower righting cylinder 8 comprises a fourth conical cylinder section, a third straight cylinder section and a fifth conical cylinder section which are fixedly installed together from top to bottom in sequence, the fourth conical cylinder section is in a circular truncated cone shape with a small top and a large bottom, the fifth conical cylinder section is in a circular truncated cone shape with a large top and a small bottom, and at least four second inclined grooves 22 which are communicated up and down are uniformly distributed on the outer side of the lower righting cylinder 8 along the circumference; at least two fourth mounting holes which are internally and externally communicated are uniformly distributed on the outer side of the middle part of the outer cylinder 9 of the fourth bearing along the circumference, a fourth annular groove is arranged on the outer side of the lower part of the mandrel 1 corresponding to the position of the fourth mounting hole, a fourth steel ball with the inner end positioned in the fourth annular groove is arranged in the fourth mounting hole, and a fourth plug with the inner end abutting against the outer end of the fourth steel ball is fixedly arranged in the fourth mounting hole. According to the requirements, according to the underground working condition and the inner diameter of the casing, the proper maximum outer diameter is selected, when cement is required to be drilled and ground or the underground casing float collar accessory and the float shoe are required to be drilled and ground, the distance from the bottom drill bit or the grind shoe to at least one drill collar is required, and the outer diameter of the bottom drill bit or the grind shoe is required to be larger than the outer diameters of the upper centering cylinder 4 and the lower centering cylinder 8; in addition, the high-hardness wear-resistant layer may be a hard alloy abrasive material coated on the upper milling cylinder 2 and the lower milling cylinder 10. During the use process, the invention is connected into the prior known pipe string, the speed in the tripping process cannot be faster than 45 meters per minute, and the drilling tool should be lifted off the bottom of the well at intervals in time so as to circularly remove the possibly accumulated debris; when drilling cement, float collar, float piece and other casing accessories, the bit pressure is between 20 and 30KN, and the rotating speed is between 50 and 60 revolutions per minute; when the pipe wall is not required to be rotated, only the pipe wall needs to be scraped, the pipe wall scraping device can reach the designed depth of the pipe column during running, the pipe column can be lifted and lowered to complete the wall scraping operation, the drill pressure is lowered to be between 20 and 30KN, large-displacement circulation is carried out, and the attachments scraped from the inner wall of the casing are taken out of a well hole, so that the well hole is clean, and the underground tool can effectively play a role conveniently. The invention has reasonable and compact structure and ingenious conception, and the upper milling cylinder 2, the first bearing outer cylinder 3, the upper righting cylinder 4, the second bearing outer cylinder 5, the scraper cylinder, the third bearing outer cylinder 7, the lower righting cylinder 8, the fourth bearing outer cylinder 9 and the lower milling cylinder 10 are sequentially sleeved outside the mandrel 1 from top to bottom, so that all parts are installed on the mandrel 1, and the situation that the integrity of the invention is influenced after the parts are installed on a plurality of shafts and different shafts are connected and strung together through threads is avoided; the upper milling barrel 2 is installed on the outer side of the upper part of the mandrel 1 in a limiting way through an upper limiting device and an upper limiting ring 37, and the upper milling barrel 2 rotates along with the mandrel 1 through arranging a first square key 39; the lower milling barrel 10 is limited and installed on the outer side of the lower part of the mandrel 1 through a lower limiting device and a lower limiting ring 38, and the lower milling barrel 10 rotates along with the mandrel 1 through arranging a second square key 40; the upper centralizing cylinder 4, the scraper cylinder and the lower centralizing cylinder 8 are prevented from rotating along with the mandrel 1 by arranging the first bearing outer cylinder 3, the second bearing outer cylinder 5, the third bearing outer cylinder 7 and the fourth bearing outer cylinder 9; the upper milling barrel 2 and the lower milling barrel 10 rotate along with the mandrel 1, so that the tube wall is milled by the upper milling barrel 2 and the lower milling barrel 10, and the tube wall milling machine has the characteristics of high efficiency, stability, time saving and labor saving.
The integral rotatable pipe scraping device can be further optimized or/and improved according to actual needs:
as shown in fig. 1, 2, 3 and 4, the scraper cylinder includes an upper mounting part 23, an upper scraper cylinder 24, a middle scraper cylinder 25, a lower scraper cylinder 26 and a lower mounting part 27 which are fixedly mounted together from top to bottom in sequence, the upper end of the upper mounting part 23 corresponding to each third groove position is provided with a third bump 15 positioned in the corresponding third groove position, and the lower end of the lower mounting part 27 corresponding to each fourth groove position is provided with a fourth bump 16 positioned in the corresponding fourth groove position; the inner diameter of the upper mounting part 23 is the same as that of the lower mounting part 27, the outer diameter of the upper mounting part 23 is the same as that of the lower mounting part 27, the inner diameter of the upper scraping cylinder 24 is larger than that of the upper mounting part 23, and the outer diameter of the upper scraping cylinder 24 is smaller than that of the upper mounting part 23; the inner diameter of the upper scraping cylinder 24 is the same as that of the lower scraping cylinder 26, the outer diameter of the upper scraping cylinder 24 is the same as that of the lower scraping cylinder 26, the inner diameter of the middle scraping cylinder 25 is larger than that of the upper scraping cylinder 24, and the outer diameter of the middle scraping cylinder 25 is larger than that of the upper scraping cylinder 24; at least two groups of well wall scrapers 6 are distributed at the outer side of the middle scraping cylinder 25 at intervals up and down; six upper grooves 28 which are communicated up and down are uniformly distributed on the outer side of the upper scraping cylinder 24 along the circumference, inclined grooves 29 which are communicated up and down are arranged on the outer side of the middle scraping cylinder 25 corresponding to the lower end position of each upper groove 28, and lower grooves 30 which are distributed in a staggered manner with the upper grooves 28 are arranged on the outer side of the lower scraping cylinder 26 corresponding to the lower end position of each inclined groove 29. According to the demand, the outer side of the middle scraping cylinder 25 is provided with a plurality of groups of well wall scrapers 6 which are distributed at intervals up and down and are integrally arranged. In the use, integral scraper intensity is high, and the scraper sword inclines to both sides from the centre, is some or line contact to sleeve pipe inner wall debris, and high aggressivity has better wall effect of scraping, and in addition, the piece of scraping can be through last recess 28, inclined groove 29 and lower groove 30 smooth, effective, quick row to the runner in.
As shown in fig. 1, 2, 3 and 4, the upper portion of the upper groove 28 is semicircular, the lower portion of the upper groove 28 is isosceles trapezoid, the groove width of the lower portion of the upper groove 28 is gradually reduced from top to bottom, the lower portion of the lower groove 30 is semicircular, the upper portion of the lower groove 30 is isosceles trapezoid, the groove width of the upper portion of the lower groove 30 is gradually increased from top to bottom, and the inclined groove 29 is parallelogram; the width of the lower end of the upper groove 28, the width of the inclined groove 29 and the width of the upper end of the lower groove 30 are the same. In use, with such an arrangement, scraped debris can be better smoothly, efficiently and quickly discharged into the flow passage through the upper groove 28, the inclined groove 29 and the lower groove 30.
As shown in fig. 1, 2 and 4, the bearing further comprises a snap ring 31, a thrust disk 32 and a thrust collar 33, a fifth ring groove is arranged on the outer side of the mandrel 1 corresponding to the lower end of the second bearing outer cylinder 5, an inner ring groove is arranged on the inner side of the upper end of the upper mounting part 23, the snap ring 31 with the outer end positioned in the inner ring groove is arranged in the fifth ring groove, and the lower end of the second bearing outer cylinder 5 is seated on the upper end of the snap ring 31; a thrust disc 32 and a thrust ring 33 which are sleeved at corresponding positions outside the mandrel 1 are sequentially arranged in the inner ring groove corresponding to the lower position of the snap ring 31 from top to bottom, and the lower end of the thrust ring 33 is seated at the bottom of the inner ring groove; the snap ring 31 is two semicircular rings, the thrust disk 32 is a circular ring, and the thrust ring 33 is a circular ring with a round angle on the upper end surface. In use, with such an arrangement, the thrust disk 32 functions as a rolling bearing and the thrust ring 33 functions as a sliding bearing; in addition, the snap ring 31 is provided as two semicircular rings, so that the snap ring 31 can be conveniently installed.
As shown in fig. 1, 2, 3 and 4, the bearing further comprises an O-shaped sealing ring 12, the O-shaped sealing ring 12 is arranged between the first bearing outer cylinder 3 corresponding to the upper position of the first ring groove and the mandrel 1, and the O-shaped sealing ring 12 is arranged between the first bearing outer cylinder 3 corresponding to the lower position of the first ring groove and the mandrel 1; an O-shaped sealing ring 12 is arranged between the second bearing outer cylinder 5 corresponding to the position above the second annular groove and the mandrel 1, and an O-shaped sealing ring 12 is arranged between the second bearing outer cylinder 5 corresponding to the position below the second annular groove and the mandrel 1; an O-shaped sealing ring 12 is arranged between the third bearing outer cylinder 7 and the mandrel 1 corresponding to the position above the third ring groove, and an O-shaped sealing ring 12 is arranged between the third bearing outer cylinder 7 and the mandrel 1 corresponding to the position below the third ring groove; an O-shaped sealing ring 12 is arranged between the fourth bearing outer cylinder 9 corresponding to the upper position of the fourth ring groove and the mandrel 1, and an O-shaped sealing ring 12 is arranged between the fourth bearing outer cylinder 9 corresponding to the lower position of the fourth ring groove and the mandrel 1. The sealing between the components of the invention is enhanced by such an arrangement during use.
As shown in fig. 1 and 2, a first semispherical groove matched with the first steel ball 19 is arranged at the inner end of the first plug 20, and the outer end of the first steel ball 19 is positioned in the first semispherical groove; a second semispherical groove matched with the second steel ball is formed in the inner end of the second plug, and the outer end of the second steel ball is positioned in the second semispherical groove; a third semispherical groove matched with a third steel ball is formed in the inner end of the third plug, and the outer end of the third steel ball is positioned in the third semispherical groove; the inner end of the fourth plug is provided with a fourth semispherical groove matched with the fourth steel ball, and the outer end of the fourth steel ball is positioned in the fourth semispherical groove. In the use process, through such setting, can avoid first bearing urceolus 3, second bearing urceolus 5, third bearing urceolus 7 and fourth bearing urceolus 9 better to rotate along with dabber 1.
As shown in attached figures 1, 2, 3 and 4, three first outer key grooves are uniformly distributed on the outer side of the upper part of the mandrel 1 along the circumference; three second outer key grooves are uniformly distributed on the outer side of the lower part of the mandrel 1 along the circumference; six straight grooves 11 which are communicated up and down are uniformly distributed on the outer side of the upper milling barrel 2 along the circumference; six first inclined grooves 21 which are communicated up and down are uniformly distributed on the outer side of the upper righting cylinder 4 along the circumference; six second inclined grooves 22 which are communicated up and down are uniformly distributed on the outer side of the lower righting cylinder 8 along the circumference; nine groups of well wall scrapers 6 are distributed on the outer side of the middle part of the scraper cylinder at intervals up and down. In the using process, the upper milling barrel 2 is more stable when rotating along with the mandrel 1 by arranging the three first external key grooves; the lower milling barrel 10 is more stable when rotating along with the mandrel 1 by arranging the three second outer key slots; the six vertical through straight grooves 11 are arranged, so that the grinding and milling effects of the upper grinding and milling cylinder 2 and the lower grinding and milling cylinder 10 are enhanced conveniently; through the arrangement of six first inclined grooves 21 which are communicated up and down, the contact area between the outer side of the upper righting cylinder 4 and the inner side of the pipe wall can be increased, so that a better righting effect is achieved; through the arrangement of six second inclined grooves 22 which are communicated up and down, the contact area between the outer side of the lower centering cylinder 8 and the inner side of the pipe wall can be increased, so that a better centering effect is achieved; through setting up nine groups of wall of a well scrapers 6, can strengthen the wall effect of scraping of scraper section of thick bamboo.
The above technical features constitute the best embodiment of the present invention, which has strong adaptability and best implementation effect, and unnecessary technical features can be increased or decreased according to actual needs to meet the requirements of different situations.
Claims (10)
1. An integral rotatable pipe scraping device is characterized by comprising a mandrel, an upper grinding and milling barrel, a first bearing outer barrel, an upper righting barrel, a second bearing outer barrel, a scraper barrel, a third bearing outer barrel, a lower righting barrel, a fourth bearing outer barrel and a lower grinding and milling barrel, wherein an upper limiting component is fixedly installed on the outer side of the upper part of the mandrel and comprises a limiting ring, a limiting barrel and a countersunk screw; the lower limiting assembly is fixedly arranged on the outer side of the lower part of the mandrel, has the same structure as the upper limiting assembly and is distributed in a mirror symmetry manner; an upper outer ring groove is arranged on the outer side of the upper part of the mandrel corresponding to the position below the upper limiting component, an upper limiting ring is arranged in the upper outer ring groove, the upper limiting ring comprises two limiting semi-rings with opposite openings, a lower outer ring groove is arranged on the outer side of the lower part of the mandrel corresponding to the position above the lower limiting component, a lower limiting ring is arranged in the lower outer ring groove, the lower limiting ring comprises two limiting semi-rings with opposite openings, an upper milling barrel is sleeved on the outer side of the upper part of the mandrel corresponding to the position between the upper limiting component and the upper outer ring groove, at least one first outer key groove is uniformly distributed on the outer side of the upper part of the mandrel corresponding to the position above the upper milling barrel along the circumference, a first inner key groove is arranged on the inner side of the upper end of the upper milling barrel corresponding to the position of each first outer key groove, a first square key with the outer end positioned in the first inner key groove corresponding to the position is arranged in, the outer end of the upper limiting ring is positioned in the upper inner ring groove; a lower milling barrel is sleeved on the outer side of the lower part of the mandrel corresponding to the position between the lower limiting component and the lower outer annular groove, at least one second outer key groove is uniformly distributed on the outer side of the lower part of the mandrel corresponding to the lower end position of the lower milling barrel along the circumference, a second inner key groove is arranged on the inner side of the lower end of the lower milling barrel corresponding to each second outer key groove, a second square key with the outer end positioned in the second inner key groove corresponding to the position is arranged in each second outer key groove, a lower inner annular groove is arranged on the inner side of the upper end of the lower milling barrel corresponding to the position of the lower outer annular groove, and the outer end of the; the upper milling barrel comprises a first conical barrel section and a first straight barrel section which are sequentially and fixedly installed together from top to bottom, the first conical barrel section is in a round platform shape with a small top and a big bottom, a high-hardness wear-resistant layer is arranged on the outer side of the upper milling barrel, at least four straight grooves which are communicated up and down are uniformly distributed on the outer side of the upper milling barrel along the circumference, and the lower milling barrel and the upper milling barrel have the same structure and are distributed in a mirror symmetry manner; the outer side of the middle part of the mandrel, which corresponds to the position between the upper milling barrel and the lower milling barrel, is sequentially sleeved with a first bearing outer barrel, an upper centering barrel, a second bearing outer barrel, a scraper barrel, a third bearing outer barrel, a lower centering barrel and a fourth bearing outer barrel from top to bottom; at least two first grooves are uniformly distributed on the outer side of the lower end of the first bearing outer cylinder along the circumference, the upper end of the upper righting cylinder corresponding to each first groove position is provided with a first lug positioned in the first groove at the corresponding position, the outer side of the upper end of the second bearing outer cylinder is uniformly distributed with at least two second grooves along the circumference, the lower end of the upper righting cylinder corresponding to each second groove position is provided with a second lug positioned in the second groove at the corresponding position, the outer side of the lower end of the second bearing outer cylinder is uniformly distributed with at least two third grooves along the circumference, the upper end of the scraper cylinder corresponding to each third groove position is provided with a third lug positioned in the third groove at the corresponding position, the outer side of the upper end of the third bearing outer cylinder is uniformly distributed with at least two fourth grooves along the circumference, the lower end of the scraper cylinder corresponding to each fourth groove position is provided with a fourth lug positioned in the fourth groove at the corresponding position, and the outer side of the lower end of the, the upper end of the lower righting cylinder corresponding to each fifth groove position is provided with a fifth lug positioned in the corresponding fifth groove, the outer side of the upper end of the outer cylinder of the fourth bearing is uniformly provided with at least two sixth grooves along the circumference, and the lower end of the lower righting cylinder corresponding to each sixth groove position is provided with a sixth lug positioned in the corresponding sixth groove; at least two first mounting holes which are internally and externally communicated are uniformly distributed on the outer side of the middle part of the first bearing outer cylinder along the circumference, a first annular groove is arranged on the outer side of the upper part of the mandrel corresponding to the position of the first mounting hole, a first steel ball with the inner end positioned in the first annular groove is arranged in the first mounting hole, and a first plug with the inner end abutting against the outer end of the first steel ball is fixedly arranged in the first mounting hole; the upper righting cylinder comprises a second conical cylinder section, a second straight cylinder section and a third conical cylinder section which are fixedly installed together from top to bottom in sequence, the second conical cylinder section is in a circular truncated cone shape with a small top and a large bottom, the third conical cylinder section is in a circular truncated cone shape with a large top and a small bottom, and at least four first inclined grooves which are communicated up and down are uniformly distributed on the outer side of the upper righting cylinder along the circumference; at least two second mounting holes which are internally and externally communicated are uniformly distributed on the outer side of the middle part of the outer cylinder of the second bearing along the circumference, a second annular groove is arranged on the outer side of the upper part of the mandrel corresponding to the position of the second mounting hole, a second steel ball with the inner end positioned in the second annular groove is arranged in the second mounting hole, and a second plug with the inner end abutting against the outer end of the second steel ball is fixedly arranged in the second mounting hole; at least two groups of well wall scrapers are distributed at the outer side of the middle part of the scraper cylinder at intervals up and down; at least two third mounting holes which are internally and externally communicated are uniformly distributed on the outer side of the middle part of the outer cylinder of the third bearing along the circumference, a third ring groove is arranged on the outer side of the lower part of the mandrel corresponding to the position of the third mounting hole, a third steel ball with the inner end positioned in the third ring groove is arranged in the third mounting hole, and a third plug with the inner end abutting against the outer end of the third steel ball is fixedly arranged in the third mounting hole; the lower righting cylinder comprises a fourth conical cylinder section, a third straight cylinder section and a fifth conical cylinder section which are fixedly installed together from top to bottom in sequence, the fourth conical cylinder section is in a circular truncated cone shape with a small top and a large bottom, the fifth conical cylinder section is in a circular truncated cone shape with a large top and a small bottom, and at least four second inclined grooves which are communicated up and down are uniformly distributed on the outer side of the lower righting cylinder along the circumference; at least two fourth mounting holes which are internally and externally communicated are uniformly distributed on the outer side of the middle part of the outer cylinder of the fourth bearing along the circumference, a fourth annular groove is arranged on the outer side of the lower part of the mandrel corresponding to the position of the fourth mounting hole, a fourth steel ball with the inner end positioned in the fourth annular groove is arranged in the fourth mounting hole, and a fourth plug with the inner end abutting against the outer end of the fourth steel ball is fixedly arranged in the fourth mounting hole.
2. The integral rotatable pipe scraping device of claim 1, wherein the scraper cylinder comprises an upper mounting part, an upper scraping cylinder, a middle scraping cylinder, a lower scraping cylinder and a lower mounting part which are fixedly mounted together from top to bottom in sequence, the upper end of the upper mounting part corresponding to each third groove position is provided with a third bump positioned in a corresponding third groove, and the lower end of the lower mounting part corresponding to each fourth groove position is provided with a fourth bump positioned in a corresponding fourth groove; the inner diameter of the upper mounting part is the same as that of the lower mounting part, the outer diameter of the upper mounting part is the same as that of the lower mounting part, the inner diameter of the upper scraping cylinder is larger than that of the upper mounting part, and the outer diameter of the upper scraping cylinder is smaller than that of the upper mounting part; the inner diameter of the upper scraping cylinder is the same as that of the lower scraping cylinder, the outer diameter of the upper scraping cylinder is the same as that of the lower scraping cylinder, the inner diameter of the middle scraping cylinder is larger than that of the upper scraping cylinder, and the outer diameter of the middle scraping cylinder is larger than that of the upper scraping cylinder; at least two groups of well wall scrapers are distributed on the outer side of the middle scraper cylinder at intervals up and down; six upper grooves which are communicated up and down are uniformly distributed on the outer side of the upper scraping cylinder along the circumference, inclined grooves which are communicated up and down are arranged on the outer side of the middle scraping cylinder corresponding to the lower end position of each upper groove, and lower grooves which are distributed in a staggered manner with the upper grooves are arranged on the outer side of the lower scraping cylinder corresponding to the lower end position of each inclined groove.
3. The integral rotatable scraper device of claim 2, wherein the upper portion of the upper groove is semicircular, the lower portion of the upper groove is isosceles trapezoid, the groove width of the lower portion of the upper groove is gradually reduced from top to bottom, the lower portion of the lower groove is semicircular, the upper portion of the lower groove is isosceles trapezoid, the groove width of the upper portion of the lower groove is gradually increased from top to bottom, and the inclined groove is parallelogram; the width of the groove at the lower end of the upper groove, the width of the inclined groove and the width of the groove at the upper end of the lower groove are the same.
4. The integral rotatable pipe scraping device according to claim 2 or 3, further comprising a snap ring, a thrust disk and a thrust ring, wherein a fifth ring groove is formed in the outer side of the mandrel corresponding to the lower end of the outer cylinder of the second bearing, an inner ring groove is formed in the inner side of the upper end of the upper mounting part, the snap ring with the outer end located in the inner ring groove is arranged in the fifth ring groove, and the lower end of the outer cylinder of the second bearing is seated on the upper end of the snap ring; a thrust disc and a thrust ring which are sleeved at corresponding positions outside the mandrel are sequentially arranged in the inner ring groove corresponding to the lower position of the clamping ring from top to bottom, and the lower end of the thrust ring is seated at the bottom of the inner ring groove; the snap ring is two semicircle rings, and the thrust dish is the ring, and the thrust ring is the ring that the up end was equipped with the fillet.
5. The integral rotatable scraping device of claim 1, 2 or 3, further comprising an O-ring, wherein the O-ring is disposed between the first outer bearing cylinder corresponding to the position above the first ring groove and the mandrel, and the O-ring is disposed between the first outer bearing cylinder corresponding to the position below the first ring groove and the mandrel; an O-shaped sealing ring is arranged between the second bearing outer cylinder corresponding to the position above the second annular groove and the mandrel, and an O-shaped sealing ring is arranged between the second bearing outer cylinder corresponding to the position below the second annular groove and the mandrel; an O-shaped sealing ring is arranged between the third bearing outer cylinder and the mandrel corresponding to the position above the third ring groove, and an O-shaped sealing ring is arranged between the third bearing outer cylinder and the mandrel corresponding to the position below the third ring groove; an O-shaped sealing ring is arranged between the fourth bearing outer cylinder corresponding to the upper position of the fourth ring groove and the mandrel, and an O-shaped sealing ring is arranged between the fourth bearing outer cylinder corresponding to the lower position of the fourth ring groove and the mandrel.
6. The integral rotatable scraping device of claim 4, further comprising an O-ring seal disposed between the outer first bearing cylinder and the mandrel at a position corresponding to the upper portion of the first ring groove, and an O-ring seal disposed between the outer first bearing cylinder and the mandrel at a position corresponding to the lower portion of the first ring groove; an O-shaped sealing ring is arranged between the second bearing outer cylinder corresponding to the position above the second annular groove and the mandrel, and an O-shaped sealing ring is arranged between the second bearing outer cylinder corresponding to the position below the second annular groove and the mandrel; an O-shaped sealing ring is arranged between the third bearing outer cylinder and the mandrel corresponding to the position above the third ring groove, and an O-shaped sealing ring is arranged between the third bearing outer cylinder and the mandrel corresponding to the position below the third ring groove; an O-shaped sealing ring is arranged between the fourth bearing outer cylinder corresponding to the upper position of the fourth ring groove and the mandrel, and an O-shaped sealing ring is arranged between the fourth bearing outer cylinder corresponding to the lower position of the fourth ring groove and the mandrel.
7. The integral rotatable pipe scraping device of claim 1, 2, 3 or 6, wherein the inner end of the first plug is provided with a first semispherical groove matched with the first steel ball, and the outer end of the first steel ball is positioned in the first semispherical groove; a second semispherical groove matched with the second steel ball is formed in the inner end of the second plug, and the outer end of the second steel ball is positioned in the second semispherical groove; a third semispherical groove matched with a third steel ball is formed in the inner end of the third plug, and the outer end of the third steel ball is positioned in the third semispherical groove; the inner end of the fourth plug is provided with a fourth semispherical groove matched with the fourth steel ball, and the outer end of the fourth steel ball is positioned in the fourth semispherical groove.
8. The integral rotatable pipe scraping device of claim 4, wherein the inner end of the first plug is provided with a first semispherical groove matched with the first steel ball, and the outer end of the first steel ball is positioned in the first semispherical groove; a second semispherical groove matched with the second steel ball is formed in the inner end of the second plug, and the outer end of the second steel ball is positioned in the second semispherical groove; a third semispherical groove matched with a third steel ball is formed in the inner end of the third plug, and the outer end of the third steel ball is positioned in the third semispherical groove; the inner end of the fourth plug is provided with a fourth semispherical groove matched with the fourth steel ball, and the outer end of the fourth steel ball is positioned in the fourth semispherical groove.
9. The integral rotatable pipe scraping device of claim 5, wherein the inner end of the first plug is provided with a first semispherical groove matched with the first steel ball, and the outer end of the first steel ball is positioned in the first semispherical groove; a second semispherical groove matched with the second steel ball is formed in the inner end of the second plug, and the outer end of the second steel ball is positioned in the second semispherical groove; a third semispherical groove matched with a third steel ball is formed in the inner end of the third plug, and the outer end of the third steel ball is positioned in the third semispherical groove; the inner end of the fourth plug is provided with a fourth semispherical groove matched with the fourth steel ball, and the outer end of the fourth steel ball is positioned in the fourth semispherical groove.
10. The integral rotatable scraper device of claim 1 or 2 or 3 or 6 or 8 or 9, wherein three first outer keyways are uniformly distributed on the outer side of the upper part of the mandrel along the circumference; three second outer key grooves are uniformly distributed on the outer side of the lower part of the mandrel along the circumference; six straight grooves which are communicated up and down are uniformly distributed on the outer side of the upper milling cylinder along the circumference; six first inclined grooves which are communicated up and down are uniformly distributed on the outer side of the upper righting cylinder along the circumference; six second inclined grooves which are communicated up and down are uniformly distributed on the outer side of the lower righting cylinder along the circumference; nine groups of well wall scrapers are distributed on the outer side of the middle part of the scraper cylinder at intervals up and down.
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| CN201910713342.0A CN110374554B (en) | 2019-08-02 | 2019-08-02 | Integral rotatable pipe scraping device |
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| CN201910713342.0A CN110374554B (en) | 2019-08-02 | 2019-08-02 | Integral rotatable pipe scraping device |
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| CN110374554B true CN110374554B (en) | 2021-07-02 |
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|---|---|---|---|---|
| CN2150329Y (en) * | 1993-02-01 | 1993-12-22 | 朱鸿亮 | Wax-scraping righting device for oil-pumping well |
| CN2677613Y (en) * | 2004-02-26 | 2005-02-09 | 大庆油田有限责任公司 | Scaler for internal wall of eccentric testing working cylinder |
| US20170122072A1 (en) * | 2012-06-27 | 2017-05-04 | Odfjell Well Services Norway As | Drill string mountable wellbore cleanup apparatus and method |
| CN207033408U (en) * | 2017-08-07 | 2018-02-23 | 克拉玛依市建业能源股份有限公司 | A kind of decontamination apparatus suitable for tube inner wall |
-
2019
- 2019-08-02 CN CN201910713342.0A patent/CN110374554B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2150329Y (en) * | 1993-02-01 | 1993-12-22 | 朱鸿亮 | Wax-scraping righting device for oil-pumping well |
| CN2677613Y (en) * | 2004-02-26 | 2005-02-09 | 大庆油田有限责任公司 | Scaler for internal wall of eccentric testing working cylinder |
| US20170122072A1 (en) * | 2012-06-27 | 2017-05-04 | Odfjell Well Services Norway As | Drill string mountable wellbore cleanup apparatus and method |
| CN207033408U (en) * | 2017-08-07 | 2018-02-23 | 克拉玛依市建业能源股份有限公司 | A kind of decontamination apparatus suitable for tube inner wall |
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