CN104695887A - Low-friction sliding type tube expander - Google Patents
Low-friction sliding type tube expander Download PDFInfo
- Publication number
- CN104695887A CN104695887A CN201510025676.0A CN201510025676A CN104695887A CN 104695887 A CN104695887 A CN 104695887A CN 201510025676 A CN201510025676 A CN 201510025676A CN 104695887 A CN104695887 A CN 104695887A
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- Prior art keywords
- tube expander
- low friction
- friction slip
- slip tube
- described spiral
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000010432 diamond Substances 0.000 claims abstract description 41
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 39
- 239000000463 material Substances 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 5
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 claims description 3
- 239000002905 metal composite material Substances 0.000 claims description 3
- 229910003470 tongbaite Inorganic materials 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 16
- 238000005516 engineering process Methods 0.000 abstract description 10
- 238000010276 construction Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 17
- 238000005299 abrasion Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 239000003082 abrasive agent Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 239000012224 working solution Substances 0.000 description 1
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
- 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
- E21B29/10—Reconditioning of well casings, e.g. straightening
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Earth Drilling (AREA)
Abstract
The invention provides a low-friction sliding type tube expander. The low-friction sliding type tube expander comprises a spiral expansion part, wherein an upper joint is formed at the upper end of the spiral expansion part, a lower joint is formed at the lower end of the spiral expansion part, an axial through hole is formed in the spiral expansion part, a plurality of spiral flanges are arranged in the middle of the spiral expansion part in a bulged manner, and a plurality of polycrystalline diamond blocks are arranged on the spiral flanges. The low-friction sliding type tube expander is high in strength and wearing resistance, the friction resistance of the low-friction sliding type tube expander during drilling can be greatly reduced, the underground safety construction is guaranteed, and the application requirement of a bellows technology at a slim-hole well section can be met.
Description
Technical field
The present invention has about a kind of tube expander, especially has the low friction slip tube expander about adopting in a kind of field of oil drilling slim-hole.
Background technology
At present, bellows isometrical packing Holes of Complicated Wells section technology has significant effect in oil drilling, completion and oil recovery, well workover etc., and has obtained and promote the use widely.This technology is the plastic strain utilizing metal, internal diameter is become slightly larger than the pipe rolling of bore hole hole diameter the bellows that latus rectum is less than bore hole borehole diameter, after being lowered into prepacked well section, the shutoff its distending being implemented Holes of Complicated Wells section to pipe state by waterpower and mechanical force.Bellows Technology is one of right challenge of this technological side in the application of slim hole well section.Apply Bellows Technology in slim-hole and be mainly faced with following problem.
First, use Bellows Technology to be generally in deep-well section, head of liquid is large, and hydraulic expansion difficulty increases considerably, and corresponding mechanical swelling difficulty strengthens.The expand tube effect of conventional tube expander is undesirable, and bearing in higher extruding and torsion situation, tube expander easily damages inefficacy.
Secondly, bellows diameter is little, and dimensional effect makes bellows expansion be out of shape difficulty to be increased, and hydraulic expansion difficulty increases, the little structure design that also limit mechanical swelling mechanism of size.Common tube expander is as ball-type tube expander, roller type tube expander etc., and due to size restrictions, expansion cell size cannot ensure, tube expander can not ensure that bellows has good circularity; Simultaneously due to size restrictions, internal construction such as body, the bearing etc. of tube expander cannot bear the high drilling pressure of slim-hole and moment of torsion.No matter on self-strength and expand tube effect, existing tube expander all cannot reach the desirable result of use of instrument.
Further, in small size well, tube expander is complicated at down-hole rotational case lower stress.In rotary course, tube expander rotary drilling under the pressure of the drill effect, be subject to the extruding of bellows tube wall and produce larger frictional resistance, tube expander overcomes spin friction resistance and creates larger moment of torsion, in small size situation, the net sectional area of tube expander certainly will diminish, opposing the pressure of the drill and torque capability step-down, if tube expander operationally twists off, be then difficult to again take out, affect drilling progress, even may cause serious drilling failure.
Therefore, be necessary to provide a kind of new tube expander, overcome the problems referred to above.
Summary of the invention
The object of this invention is to provide a kind of low friction slip tube expander, its intensity and abrasion resistance high, significantly can reduce the frictional resistance of this low friction slip tube expander when creeping into, ensure downhole safety construction, it can meet the application requirement of Bellows Technology in slim hole well section.
Above-mentioned purpose of the present invention can adopt following technical proposal to realize:
The invention provides a kind of low friction slip tube expander, it has spiral expansion portion, the upper end in described spiral expansion portion is formed with top connection, its lower end is formed with lower contact, through hole through is vertically provided with in described spiral expansion portion, the middle part in described spiral expansion portion is convexly equipped with many spiral ridges, and described spiral ridge is provided with multiple polycrystalline diamond block.
In a preferred embodiment, described spiral expansion portion has integrated reaming hole section and gauge section, and described reaming hole section is cone barrel, and described gauge section is cylindrical.
In a preferred embodiment, the longitudinal section outer contour of described reaming hole section is straight line.
In a preferred embodiment, the longitudinal section outer contour of described reaming hole section is camber line.
In a preferred embodiment, the material of described spiral ridge is ceramic-metal composite, chromium carbide alloy or diamond composite.
In a preferred embodiment, described polycrystalline diamond block is cylindrical, cuboid, cambered surface cuboid or Long Circle.
In a preferred embodiment, the bottom of described polycrystalline diamond block is arranged in described spiral ridge, and the top of described polycrystalline diamond block is arranged on outside described spiral ridge.
In a preferred embodiment, the along the circumferential direction even projection of multiple described spiral ridge, in described spiral expansion portion, is formed with helical flow path between adjacent described spiral ridge between two.
In a preferred embodiment, described spiral ridge is three or four.
In a preferred embodiment, described spiral ridge is provided with side by side multiple row polycrystalline diamond block, the multiple described polycrystalline diamond block between two in adjacent column is crisscross arranged.
Feature and the advantage of low friction slip tube expander of the present invention are: this low friction slip tube expander structure is simple, easy to operate, effectively increase intensity and the abrasion resistance of tube expander, reduce the frictional resistance of tube expander when creeping into, can meet the application requirement of Bellows Technology in slim hole well section, this low friction slip tube expander has following beneficial effect:
(1) this low friction slip tube expander, completely exposed in down-hole slurry environment, without the need to sealing, also without the need to lubrication oil, it is simple and reliable for structure, is not only applicable to slim hole well section, and the well Duan Douke of all sizes adopts, its spiral ridge and on the friction type that contacts with the face of bellows tube wall of multiple polycrystalline diamond block can also realize the circular contact that tube expander and bellows tube wall meet the eye on every side, ensure the effect of expand tube;
(2) this low friction slip tube expander adopts the through integrative-structure being provided with through hole in middle part, can significantly simplify tube expander structure, be connected with drilling rod and downhole tool by the drill rod thread of top connection simultaneously, greatly enhance the intensity of tube expander, eliminate the hidden danger that common tube expander uses in slim hole well section;
(3) the spiral expansion portion of this low friction slip tube expander adopts the helical structure of multiple spiral ridge to design, have and meet the eye on every side preferably and cavetto effect, the helical flow path simultaneously formed between spiral ridge between two can ensure the unimpeded mistake of drilling liquid flow, cooling and lubricant effect excellence;
(4) surface of the spiral ridge of this low friction slip tube expander adopt the little high-abrasive material of friction factor and on multiple polycrystalline diamonds, make this low friction slip tube expander supporting capacity large, skin friction is little, surface abrasion resistance, and the life-span is long; But also design can be optimized according to the surface of concrete service condition to spiral ridge, local strengthening can also be carried out by the method changing polycrystalline diamond arrangement mode to the position of serious wear.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the half sectional view of low friction slip tube expander of the present invention.
Fig. 2 is the cross-sectional view of the embodiment one of low friction slip tube expander of the present invention.
Fig. 3 is the cross-sectional view of the embodiment two of low friction slip tube expander of the present invention.
Fig. 4 is the half sectional view of the first embodiment of low friction slip tube expander of the present invention.
Fig. 5 is the half sectional view of the second embodiment of low friction slip tube expander of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, the invention provides a kind of low friction slip tube expander, it has spiral expansion portion 1, the upper end in described spiral expansion portion 1 is formed with top connection 11, its lower end is formed with lower contact 12, be provided with through hole 13 through vertically in described spiral expansion portion 1, the middle part in described spiral expansion portion 1 is convexly equipped with many spiral ridges 14, and described spiral ridge 14 is provided with multiple polycrystalline diamond block 141.
Specifically, top connection 11 internal chamber wall in spiral expansion portion 1 is provided with drill rod thread, to be connected with drilling rod; Lower contact 12 outer wall in threaded expander portion 1 is provided with drill rod thread, to be connected with junk sub or junk mill, to realize the function continuing salvaging or milling.Spiral expansion portion 1 is substantially in cylindrical tube, and offer the through hole 13 of through top connection 11 and lower contact 12 in the middle part of it vertically, this through hole 13 can play the effect of drilling fluid through this low friction slip tube expander of out-of-date cooling and lubricating.The top connection 11 in this spiral expansion portion 1 and the diameter of lower contact 12 are determined by joint size, borehole diameter, and lower contact 12 diameter should be less than the internal diameter of bellows two end joint, and the diameter of top connection 11 should equal the bit size of corresponding well.
The middle part in spiral expansion portion 1 is convexly equipped with many spiral ridges 14, and many spiral ridges 14 on the external surface in spiral expansion portion 1, are formed with helical flow path 15 between spiral ridge 14 adjacent between two along the even projection of circumferencial direction in spiral expansion portion 1.The material of this spiral ridge 14 is the surface contact material that friction factor is little, be such as ceramic-metal composite, chromium carbide alloy or diamond composite etc., in the present embodiment, the material of spiral ridge 14 is diamond composite, this diamond composite is formed by diamond and the carcass be wrapped in outside diamond, wherein the material of this carcass is ferrous alloy, acid bronze alloy or tungsten carbide-base alloy etc., this spiral ridge 14 can ensure that this low friction slip tube expander has and good meet the eye on every side effect and cavetto effect, and expand tube effect is better; Helical flow path 15 can ensure that drilling fluid can smoothness pass through, and this drilling fluid can play the effect of Cooling and Lubricator to the multiple polycrystalline diamond blocks 141 be arranged on spiral ridge 14 simultaneously.In the present embodiment, the middle part in spiral expansion portion 1 is convexly equipped with three or four spiral ridges 14, and also, the middle part being illustrated in figure 2 spiral expansion portion 1 is convexly equipped with three spiral ridges 14, Figure 3 shows that the middle part in spiral expansion portion 1 is convexly equipped with four spiral ridges 14.
Further, multiple polycrystalline diamond block 141 has been arranged side by side multiple row on spiral ridge 14, and the multiple polycrystalline diamond blocks 141 between two in adjacent column are crisscross arranged.In the present embodiment, every bar spiral ridge 14 is provided with side by side two row polycrystalline diamond blocks 141, certainly, also can be only provided with a row polycrystalline diamond block 141 on a spiral ridge 14, or three row or more row polycrystalline diamond block 141, this is not restricted; The all equidistant setting of multiple polycrystalline diamond blocks 141 in two row on every bar spiral ridge 14, and the interlaced setting of multiple polycrystalline diamond blocks 141 in two row.In the present invention, polycrystalline diamond block 141 can be cylindrical, cuboid, cambered surface cuboid (is also, the lateral wall of cuboid is curved) or Long Circle etc., the bottom of polycrystalline diamond block 141 is arranged in spiral ridge 14, the top of polycrystalline diamond block 141 is arranged on outside spiral ridge 14, distance between the top of this polycrystalline diamond block 141 and the external surface of spiral ridge 14 is 1mm, to ensure that polycrystalline diamond block 141 operationally can obtain the lubrication and cooling of drilling well working solution in time, timely heat radiation, prevent polycrystalline diamond block 141 over-heating erosion.
Further, in the present embodiment, spiral expansion portion 1 is made up of integrated reaming hole section 16 and gauge section 17, and the projection of many spiral ridges 14 is in reaming hole section 16 and gauge section 17, and wherein, this reaming hole section 16 is in cone barrel, and this gauge section 17 is cylindrical.Reaming hole section 16 is designed to cone barrel by the present invention, can reduce the expand tube pressure of this low friction slip tube expander, to ensure the ascending body of distending gradually of spiral expansion portion 1 energy; The gauge section 17 in this spiral expansion portion 1 is cylindrical shape, also i.e. the longitudinal section outer contour 171 of this gauge section 17 and the axis being parallel in spiral expansion portion 1, to prevent body distending portion retracts.In one embodiment of this invention, as shown in Figure 4, the longitudinal section outer contour 161 of reaming hole section 16 is straight line, and it can use under low friction slip tube expander meets the prerequisite of intensity; In another embodiment, as shown in Figure 5, the longitudinal section outer contour 161 of reaming hole section 16 is camber line, and it can need to improve use when the reaming hole section Final 16 spends at low friction slip tube expander.
Low friction slip tube expander structure of the present invention is simple, easy to operate, effectively increasing intensity and the abrasion resistance of tube expander, reducing the frictional resistance of tube expander when creeping into, can meet the application requirement of Bellows Technology in slim hole well section, this low friction slip tube expander has following effect:
(1) this low friction slip tube expander, completely exposed in down-hole slurry environment, without the need to sealing, also without the need to lubrication oil, it is simple and reliable for structure, is not only applicable to slim hole well section, and the well Duan Douke of all sizes adopts, its spiral ridge 14 and on the friction type that contacts with the face of bellows tube wall of multiple polycrystalline diamond block 141 can also realize the circular contact that tube expander and bellows tube wall meet the eye on every side, ensure the effect of expand tube;
(2) this low friction slip tube expander adopts the through integrative-structure being provided with through hole 13 in middle part, can significantly simplify tube expander structure, be connected with drilling rod and downhole tool by the drill rod thread of top connection 11 simultaneously, greatly enhance the intensity of tube expander, eliminate the hidden danger that common tube expander uses in slim hole well section;
(3) the spiral expansion portion 1 of this low friction slip tube expander adopts the helical structure of multiple spiral ridge 14 to design, have and meet the eye on every side preferably and cavetto effect, the helical flow path 15 simultaneously formed between spiral ridge 14 between two can ensure the unimpeded mistake of drilling liquid flow, cooling and lubricant effect excellence;
(4) surface of the spiral ridge 14 of this low friction slip tube expander adopt the little high-abrasive material of friction factor and on multiple polycrystalline diamonds 141, make this low friction slip tube expander supporting capacity large, skin friction is little, surface abrasion resistance, and the life-span is long; But also design can be optimized according to the surface of concrete service condition to spiral ridge 14, local strengthening can also be carried out by the method changing polycrystalline diamond 141 arrangement mode to the position of serious wear.
The foregoing is only several embodiments of the present invention, those skilled in the art can carry out various change or modification to the embodiment of the present invention according to content disclosed in application documents and not depart from the spirit and scope of the present invention.
Claims (10)
1. one kind low friction slip tube expander, it is characterized in that, it has spiral expansion portion, the upper end in described spiral expansion portion is formed with top connection, its lower end is formed with lower contact, be provided with through hole through vertically in described spiral expansion portion, the middle part in described spiral expansion portion is convexly equipped with many spiral ridges, and described spiral ridge is provided with multiple polycrystalline diamond block.
2. low friction slip tube expander as claimed in claim 1, is characterized in that, described spiral expansion portion has integrated reaming hole section and gauge section, and described reaming hole section is cone barrel, and described gauge section is cylindrical.
3. low friction slip tube expander as claimed in claim 2, is characterized in that, the longitudinal section outer contour of described reaming hole section is straight line.
4. low friction slip tube expander as claimed in claim 2, is characterized in that, the longitudinal section outer contour of described reaming hole section is camber line.
5. low friction slip tube expander as claimed in claim 1, is characterized in that, the material of described spiral ridge is ceramic-metal composite, chromium carbide alloy or diamond composite.
6. low friction slip tube expander as claimed in claim 1, is characterized in that, described polycrystalline diamond block is cylindrical, cuboid, cambered surface cuboid or Long Circle.
7. low friction slip tube expander as claimed in claim 1, is characterized in that, the bottom of described polycrystalline diamond block is arranged in described spiral ridge, and the top of described polycrystalline diamond block is arranged on outside described spiral ridge.
8. low friction slip tube expander as claimed in claim 1, is characterized in that, multiple described spiral ridge along the circumferential direction even projection, in described spiral expansion portion, is formed with helical flow path between adjacent described spiral ridge between two.
9. low friction slip tube expander as claimed in claim 8, is characterized in that, described spiral ridge is three or four.
10. low friction slip tube expander as claimed in claim 1, is characterized in that, described spiral ridge is provided with side by side multiple row polycrystalline diamond block, and the multiple described polycrystalline diamond block between two in adjacent column is crisscross arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510025676.0A CN104695887A (en) | 2015-01-19 | 2015-01-19 | Low-friction sliding type tube expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510025676.0A CN104695887A (en) | 2015-01-19 | 2015-01-19 | Low-friction sliding type tube expander |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104695887A true CN104695887A (en) | 2015-06-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510025676.0A Pending CN104695887A (en) | 2015-01-19 | 2015-01-19 | Low-friction sliding type tube expander |
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| Country | Link |
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| CN (1) | CN104695887A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112523711A (en) * | 2019-09-19 | 2021-03-19 | 中国石油化工股份有限公司 | Bellows expansion tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030155155A1 (en) * | 2002-02-19 | 2003-08-21 | Dewey Charles H. | Expandable underreamer/stabilizer |
| CN2720090Y (en) * | 2004-04-10 | 2005-08-24 | 辽河石油勘探局 | Grind shoe for finishing casing-tube path and fixing lining tube |
| CN201552420U (en) * | 2009-10-13 | 2010-08-18 | 中国石油天然气股份有限公司 | Spiral spherical surface shaper |
| CN201627554U (en) * | 2010-03-02 | 2010-11-10 | 中国石油大学(北京) | Device for installing inflatable metal tube in unstable wellbore |
| CN202073519U (en) * | 2011-04-21 | 2011-12-14 | 北京华油油气技术开发有限公司 | High-efficiency tool for restoring dislocated and broken sleeve |
| CN202348192U (en) * | 2011-12-07 | 2012-07-25 | 辽宁石油机械制造有限公司 | Pear-shaped casing roller |
| CN202810657U (en) * | 2012-08-22 | 2013-03-20 | 中国石油集团长城钻探工程有限公司 | Spiral redressing and expanding tool |
| CN203729934U (en) * | 2014-01-03 | 2014-07-23 | 中国石油天然气股份有限公司 | Expansion cone |
| CN204457548U (en) * | 2014-12-16 | 2015-07-08 | 中国石油化工股份有限公司 | A kind of spiral expansion bellows tube expander |
-
2015
- 2015-01-19 CN CN201510025676.0A patent/CN104695887A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030155155A1 (en) * | 2002-02-19 | 2003-08-21 | Dewey Charles H. | Expandable underreamer/stabilizer |
| CN2720090Y (en) * | 2004-04-10 | 2005-08-24 | 辽河石油勘探局 | Grind shoe for finishing casing-tube path and fixing lining tube |
| CN201552420U (en) * | 2009-10-13 | 2010-08-18 | 中国石油天然气股份有限公司 | Spiral spherical surface shaper |
| CN201627554U (en) * | 2010-03-02 | 2010-11-10 | 中国石油大学(北京) | Device for installing inflatable metal tube in unstable wellbore |
| CN202073519U (en) * | 2011-04-21 | 2011-12-14 | 北京华油油气技术开发有限公司 | High-efficiency tool for restoring dislocated and broken sleeve |
| CN202348192U (en) * | 2011-12-07 | 2012-07-25 | 辽宁石油机械制造有限公司 | Pear-shaped casing roller |
| CN202810657U (en) * | 2012-08-22 | 2013-03-20 | 中国石油集团长城钻探工程有限公司 | Spiral redressing and expanding tool |
| CN203729934U (en) * | 2014-01-03 | 2014-07-23 | 中国石油天然气股份有限公司 | Expansion cone |
| CN204457548U (en) * | 2014-12-16 | 2015-07-08 | 中国石油化工股份有限公司 | A kind of spiral expansion bellows tube expander |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112523711A (en) * | 2019-09-19 | 2021-03-19 | 中国石油化工股份有限公司 | Bellows expansion tool |
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Application publication date: 20150610 |
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