CN109458135B - Full-displacement reaming-while-drilling tool assembly - Google Patents
Full-displacement reaming-while-drilling tool assembly Download PDFInfo
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- CN109458135B CN109458135B CN201811596624.9A CN201811596624A CN109458135B CN 109458135 B CN109458135 B CN 109458135B CN 201811596624 A CN201811596624 A CN 201811596624A CN 109458135 B CN109458135 B CN 109458135B
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- 238000005553 drilling Methods 0.000 title claims abstract description 40
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 27
- 238000007789 sealing Methods 0.000 claims abstract description 51
- 239000000956 alloy Substances 0.000 claims abstract description 14
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 14
- 230000006835 compression Effects 0.000 claims description 18
- 238000007906 compression Methods 0.000 claims description 18
- 238000010008 shearing Methods 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 5
- 230000036346 tooth eruption Effects 0.000 claims description 4
- 229920001342 Bakelite® Polymers 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000004637 bakelite Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000006748 scratching Methods 0.000 abstract 1
- 230000002393 scratching effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007790 scraping Methods 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
-
- 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
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- 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 discloses a full-displacement reaming-while-drilling tool assembly, which relates to the field of oilfield exploitation drilling auxiliary equipment and comprises a body, a first hole circlip, an upper locking sleeve, a central tube, a hole circlip, a first O-shaped sealing ring, a forced reset shear pin, a hard alloy push ring, a forced reset ball, a sliding sleeve and a throttling circulation sleeve. The beneficial effects are that: the device has a simple and reliable structure, can effectively avoid underground operation risks such as casing pipe scratching, incapability of circulation in the middle, incapability of retracting blades and the like in reaming operation, and can be widely popularized and applied in occasions such as narrow-gap well cementation, well wall shrinkage restoration treatment and the like.
Description
Technical Field
The invention relates to the field of oilfield exploitation drilling auxiliary equipment, in particular to a full-displacement reaming-while-drilling tool assembly.
Background
The hydraulic reamer is a main downhole tool for reaming operation, and can be applied to reaming while drilling and reaming after drilling. The conventional hydraulic reamer has the defects that the conventional hydraulic reamer cannot circulate in the middle of drilling, no subsequent treatment measures exist when the blades cannot be retracted, the blades extend out due to the fact that a pump is started in the middle of drilling, the sleeve is possibly scratched, the underground safety risk exists in the middle of the hydraulic reamer, and engineering accidents can be caused due to the fact that the blades cannot be retracted.
Disclosure of Invention
The present invention is directed to a full displacement while drilling reaming tool assembly that solves the above-mentioned problems.
The invention realizes the above purpose through the following technical scheme:
the full-displacement reaming-while-drilling tool assembly comprises a body, a first hole circlip, an upper locking sleeve, a central tube, a hole circlip, a first O-shaped sealing ring, a forced reset shear pin, a hard alloy push ring, a forced reset ball, a sliding sleeve and a throttling circulation sleeve, wherein the body is connected with the upper locking sleeve through trapezoidal threads, the central tube is connected with the upper locking sleeve through the forced reset shear pin, the first hole circlip is further arranged between the central tube and the upper locking sleeve and used for limiting, a cushion ring and the hard alloy push ring are arranged in a central tube groove, one side of the hard alloy push ring is provided with the second hole circlip for limiting, a regulating ring is arranged between the body and the central tube, the sliding sleeve is internally provided with a cylindrical spiral compression spring, the body is internally provided with a track groove, the sliding sleeve is provided with two push blocks through connection, the push blocks are respectively, the push blocks are provided with a push hole, the two push blocks are connected with the throttling circulation sleeve through the groove, the inner sleeve is internally provided with the groove, the throttling circulation sleeve is internally provided with the tapered sleeve through the groove, the throttling circulation sleeve is internally provided with the tapered sleeve, the throttling circulation sleeve is internally provided with the hole through the groove, the hole is connected with the throttling circulation sleeve through the 35, the body is also fixedly provided with a lower joint through the locking pin.
Further, a first O-shaped sealing ring is further arranged between the body and the upper locking sleeve for sealing, a second O-shaped sealing ring is arranged between the central tube and the upper locking sleeve for sealing, the adjusting ring and the upper locking sleeve are sealed through a third O-shaped sealing ring, the pressing block and the pushing block are connected through a screw and limited through a third hole by an elastic retainer ring, a second Yx sealing ring is arranged between the body and the pushing sleeve for sealing, a first Yx sealing ring is arranged between the pushing sleeve and the central tube for sealing, a thirteenth O-shaped sealing ring and a fifteenth O-shaped sealing ring are further arranged between the body and the lower locking sleeve, a sixth O-shaped sealing ring and an eighth O-shaped sealing ring are arranged between the lower locking sleeve and the limiting sleeve, a seventh O-shaped sealing ring, a ninth O-shaped sealing ring and an eleventh O-shaped sealing ring are arranged between the lower locking sleeve and the hole-closing sleeve, a tenth O-shaped sealing ring, a twelfth O-shaped sealing ring and a twelfth O-shaped sealing ring are arranged between the opening sleeve and the hole sleeve, a sixteenth O-shaped sealing ring, a sliding joint and a sixteenth O-shaped sealing ring are arranged between the body and the fourth O-shaped sealing ring and the limiting sleeve respectively.
Furthermore, the body adopts high strength steel, and the upper end is provided with API standard drilling rod screw thread.
Further, the forced return shear pin, the lower closure Kong Jianding, the upper closure Kong Jianding, and the aperture pin are arranged in this order from the high shear pressure to the low shear pressure.
Further, the groove track on the body adopts a boss groove track, the groove track and the central axis form a certain included angle, and PDC cutting teeth and gauge protection teeth are distributed on the cutter block group.
Furthermore, a certain bypass flow area is arranged between the throttling circulation sleeve and the lower joint in an empty mode, so that drilling fluid circulation is not affected when lower flow passes through the throttling circulation sleeve and is blocked.
Further, the forced reset ball is one of bakelite or resin.
Furthermore, three hard alloy water holes are uniformly distributed below the body, so that the reaming well wall can be conveniently cleaned.
Further, the cutter block group is replaced by a centralizing block without PDC cutting teeth for hydraulic centralizing while drilling operation.
In the structure, the device assembly is connected in the drill string according to design requirements, circulation can be performed according to requirements in the drilling process, the perforated ball is thrown into the drill string after the drill string is put into a design position, the drill string is pumped into the perforated sleeve, the perforated pin is sheared by pressure build-up, the perforated sleeve is knocked down, the drill string falls into the throttling circulation sleeve, circulation is established, a bypass circulation hole is exposed, and reaming operation is performed. After reaming operation is completed, guan Kongqiu is put into the upper part of the pressure-holding ring, the pressure-holding shearing is carried out on the switch Kong Jianding, the circulation hole is closed, the pressure-holding shearing is continued to be carried out on the switch Kong Xiaoding, the pressure-holding ring is knocked down and falls into the throttling circulation sleeve, the cutter block group automatically resets under the action of the cylindrical helical compression spring, when the friction force between the cylindrical helical compression spring and a well wall is insufficient to reset the cutter block, the forced reset ball is put into, the pressure-holding shearing is carried out on the forced reset shear pin, and the forced reset of the cutter block group is realized.
When the device is used, the inside of the tool assembly is smooth in the initial state, after the tool is put into a set position, the perforated ball is pumped into the tool assembly to form a hold-down pressure, the perforated pin is sheared, the perforated sleeve is knocked down into the throttling circulation sleeve to expose the circulation hole, after the circulation hole is exposed, the circulation drilling fluid pressure pushes the pushing sleeve to axially move upwards to drive the cutter block group to move upwards along a track against the action of the cylindrical helical compression spring, the outer diameter of the cutter block group is expanded to a target reaming size, before the perforated pin shears the exposed circulation hole, after the hole closing pin shears the closed circulation hole, the full-displacement circulation cutter block group cannot stretch out, reaming is realized under the action of a ground turntable or a top drive, under normal conditions, the cutter block group is reset under the pushing action of the cylindrical helical compression spring, after reaming operation is completed, guan Kongqiu is put into the cutter block group, the hold-down pressure shears the cutter Kong Xiaoding, the bearing ring drives the hole closing sleeve to descend to the top of the throttling circulation sleeve, the hole closing Kong Xiaoding is continuously pressed and sheared off, the circulation hole is closed, the cutter block group is reset under the action of the cylindrical helical compression spring, the bearing ring falls into the throttling circulation sleeve, when solid-phase particles are blocked between a track between the body and the cutter block group or between the body and the pushing sleeve, the thrust of the cylindrical helical compression spring on the cutter block group and the friction force of the well wall cutter block group can not overcome the friction force between sliding parts, the cutter block group can not be automatically reset, when the cutter wings can not be retracted after the reaming operation is finished, the forced reset ball is thrown, the pressing is sheared off, the forced reset shear pin is pushed to descend, the sliding sleeve pushes the cutter block group to descend so as to realize forced reset, and after the cutter block group is reset, continuing to hold pressure and shear the forced reset ball, wherein the forced reset ball falls into the throttling circulation sleeve, the cylindrical helical compression spring pushes the adjusting ring to ascend, and the adjusting ring and the central tube are reset.
The beneficial effects are that: the full-displacement circulating device has the advantages that the full-displacement circulating device is simple and reliable in structure, full-displacement starting can be realized after the drill is put in place, the forced resetting of the blades can be realized through the ground ball throwing when the blades cannot be retracted, underground operation risks such as casing pipe scraping during reaming operation, incapability of circulating midway, incapability of retracting the blades and the like can be effectively avoided, and the full-displacement circulating device can be popularized and applied in large areas in occasions such as narrow-gap well cementation, well wall shrinkage restoration treatment and the like.
Drawings
FIG. 1 is a schematic illustration of a full displacement while drilling reaming tool assembly in accordance with the present invention;
FIG. 2 is an enlarged view of the A module configuration of a full displacement while drilling reaming tool assembly in accordance with the present invention;
FIG. 3 is an enlarged view of the B-module configuration of a full displacement while drilling reaming tool assembly in accordance with the present invention;
FIG. 4 is an enlarged view of the C-module configuration of a full displacement while drilling reaming tool assembly in accordance with the present invention;
FIG. 5 is an initial state of a full displacement while drilling reamer tool assembly of the present invention;
FIG. 6 is a view of a fully displaced while drilling reamer assembly of the present invention in a run-in, open-hole ball reaming operation;
FIG. 7 illustrates a lost motion ball retrieval blade operating condition of a full displacement while drilling reaming tool assembly in accordance with the present invention;
FIG. 8 illustrates a drop-in forced reset ball retrieval blade operating condition of a full displacement while drilling reaming tool assembly in accordance with the present invention;
FIG. 9 is a shear forced reset ball operating condition of a full displacement while drilling reamer tool assembly of the present invention.
The reference numerals are explained as follows:
1. a body; 2. a circlip for the first hole; 3. an upper locking sleeve; 4. a central tube; 5. a circlip for the second hole; 6. a first O-ring seal; 7. forcibly resetting the shear pins; 8. a hard alloy push ring; 9. forced reset ball; 10. a backing ring; 11. a second O-ring seal; 12. a third O-ring seal; 13. an adjusting ring; 14. a cylindrical helical compression spring; 15. a fourth O-ring seal; 16. a sliding sleeve; 17. a circlip is used for the third hole; 18. a screw; 19. briquetting; 20. a pushing block; 21. a knife block group; 22. pushing the sleeve; 23. a first Yx seal ring; 24. a fifth O-ring seal; 25. a second Yx seal ring; 26. a limit sleeve; 27. a lower locking sleeve; 28. a sixth O-ring seal; 29. closing the hole sleeve; 30. a seventh O-ring seal; 31. upper switch Kong Jianding; 32. an eighth O-ring seal; 33. lower gate Kong Jianding; 34. guan Kongqiu; 35. a bearing ring; 36. a ninth O-ring seal; 37. a tenth O-ring seal; 38. an eleventh O-ring seal; 39. a twelfth O-ring seal; 40. thirteenth O-ring seal; 41. a hole sleeve is arranged; 42. fourteenth O-ring seal; 43. a perforated ball; 44. a pin with holes; 45. fifteenth O-ring seal; 46. sixteenth O-ring seal; 47. a locking pin; 48. a lower joint; 49. a throttle circulating sleeve; 50. and a supporting seat.
Detailed Description
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
The invention is further described below with reference to the accompanying drawings:
as shown in fig. 1-4, a full-displacement reaming while drilling tool assembly comprises a body 1, a first circlip 2 for holes, an upper locking sleeve 3, a central tube 4, a circlip 5 for holes, a first O-shaped sealing ring 6, a forced reset shear pin 7, a hard alloy push ring 8, a forced reset ball 9, a sliding sleeve 16 and a throttling circulation sleeve 49, wherein the body 1 is connected with the upper locking sleeve 3 through trapezoidal threads, the central tube 4 is connected with the upper locking sleeve 3 through the forced reset shear pin 7, the first circlip 2 for holes is further arranged between the central tube 4 and the upper locking sleeve 3 for limiting, a backing ring 10 and the hard alloy push ring 8 are arranged in a groove of the central tube 4, one side of the hard alloy push ring 8 is provided with the circlip 5 for limiting, an adjusting ring 13 is arranged between the body 1 and the central tube 4, the sliding sleeve 16 is arranged inside the body 1, a cylindrical helical compression spring 14 is arranged between the adjusting ring 13 and the sliding sleeve 16, a track groove is arranged on the body 1, a cutter block group 21 is arranged in the track groove, the sliding sleeve 16 is connected with a push block 20 through a pressing block 19, the push block 20 is provided with two push blocks, a cutter block group 21 is arranged between the two symmetrical push blocks 20, a push sleeve 22 is also arranged inside the body 1, the body 1 is connected with a lower locking sleeve 27 through trapezoidal threads, the lower locking sleeve 27 is connected with a limit sleeve 26 through threads, the lower locking sleeve 27 is connected with a related hole sleeve 29 through an upper closing Kong Jianding 31, a bearing ring 35 is arranged inside the hole sleeve 29, the hole sleeve 29 is connected with the bearing ring 35 through a lower closing Kong Jianding, a hole sleeve 41 is arranged inside the hole sleeve 29 and a throttle circulation sleeve 49, the hole sleeve 41 is connected with the throttle circulation sleeve 49 through a hole locking nail 44, the throttle circulation sleeve 49 is connected with a supporting seat 50 through threads, the body 1 is also fixedly provided with a lower joint 48 by means of a locking pin 47.
In this embodiment, a first O-ring 6 is further disposed between the body 1 and the upper locking sleeve 3 for sealing, a second O-ring 11 is disposed between the central tube 4 and the upper locking sleeve 3 for sealing, the adjusting ring 13 and the upper locking sleeve 3 are sealed by a third O-ring 12, the pressing block 19 and the pushing block 20 are connected by a screw 18 and limited by a circlip 17 for a third hole, a second Yx-ring 25 is disposed between the body 1 and the pushing sleeve 22 for sealing, the pushing sleeve 22 and the central tube 4 are sealed by a first Yx-ring 23, a thirteenth O-ring 40 and a fifteenth O-ring 45 are also disposed between the body 1 and the lower locking sleeve 27, a sixth O-ring 28 and an eighth O-ring 32 are disposed between the lower locking sleeve 27 and the limiting sleeve 26, a seventh O-ring 30, a ninth O-ring 36, an eleventh O-ring 38 are disposed between the lower locking sleeve 27 and the closing hole sleeve 29, a tenth O-ring 37, a twelfth O-ring 39, a sliding sleeve 16, a sixteenth O-ring 48, a fourth O-ring 48 and a sixteenth O-ring 46 are disposed between the body and the fourth O-ring 48 and a sixteenth O-ring 46 respectively disposed between the lower locking sleeve and the body and the limiting sleeve 29.
In the embodiment, the body 1 is made of high-strength steel, is designed with large wall thickness, and has higher tensile strength, extrusion resistance and torsional strength due to the adoption of API standard drill rod threads at the upper end.
In this embodiment, the shear pins 7, the lower switch Kong Jianding, the upper switch Kong Jianding, and the hole pins 44 are forcibly reset in this order from the high shear pressure to the low shear pressure.
In this embodiment, the cutter block group 21 and the body 1 are designed by adopting a boss groove track, the track and the central axis form a certain included angle, and PDC cutting teeth and gauge protection teeth are distributed on the cutter block group 21.
In this embodiment, a certain bypass flow area is left empty between the throttle circulation sleeve 49 and the lower joint 48, so that the circulation of drilling fluid is not affected when the lower flow is blocked.
In this embodiment, the forced reset ball 9 is made of nonmetallic materials such as bakelite or resin.
In the embodiment, three hard alloy water holes are uniformly distributed below the body 1, so that the reaming well wall is conveniently cleaned.
In this embodiment, the cutter block set 21 may be replaced with a centralizer block without PDC cutters, and the reaming tool converted to a hydraulic centralizer while drilling.
In this embodiment, the device assembly is coupled to the drill string according to the design requirement, and can circulate as required in the drilling process, and after the drill string is put into the design position, the drill string is put into the perforated ball 43, pumped into the perforated sleeve 41, the perforated pin 44 is sheared by the pressure build-up, the perforated sleeve 41 is knocked down, and falls into the throttling circulation sleeve 49, so that circulation is established to expose the bypass circulation hole, and reaming operation is performed. After the reaming operation is completed, the hole closing ball 34 is put into the upper part of the pressure bearing ring 35, the upper pressure holding shearing switch Kong Jianding is closed, the circulation hole is closed, the lower pressure holding shearing switch Kong Xiaoding is continued to be pressed, the support ring 35 is knocked down and falls into the throttling circulation sleeve 49, the cutter block group 21 is automatically reset under the action of the cylindrical helical compression spring 14, and when the friction force between the cylindrical helical compression spring 14 and the well wall is insufficient to reset the cutter block, the forced reset ball 9 is put into, the pressure holding shearing force is applied to forcedly reset the shear pin 7, and the forced reset of the cutter block group 21 is realized.
In the above structure, the tool assembly is in an initial state with smooth interior (refer to fig. 5-9), after the tool is put into a set position, the perforated ball 43 is pumped into the set position to form a hold-down pressure, the perforated pin 44 is sheared, the perforated sleeve 41 is knocked down into the throttling circulation sleeve 49 to expose the circulation hole, the circulation drilling fluid pressure after the circulation hole is exposed pushes the pushing sleeve 26 to axially move upwards to drive the cutter block group 21 to move upwards along the track against the action of the cylindrical helical compression spring 14, the outer diameter of the cutter block group 21 is expanded to a target reaming size, before the perforated pin 44 shears the exposed circulation hole, after the hole closing pin shears the closed circulation hole, the full-displacement circulation cutter block group of the device does not stretch out, reaming is realized under the action of a ground turntable or top drive, the pump-stopping cutter block group 21 is reset under the pushing action of the cylindrical helical compression spring 14 under normal conditions, after reaming operation is completed, the hole closing ball 34 is put into, the pressure-holding and shearing upper switch Kong Xiaoding, the pressure-holding ring 35 drives the hole-closing sleeve 29 to descend to the top of the throttling circulation sleeve 49, the pressure-holding and shearing lower switch Kong Xiaoding 33 is continued, the circulation hole is closed, the cutter block group 21 is reset under the action of the cylindrical helical compression spring 14, the pressure-holding ring 35 falls into the throttling circulation sleeve 49, when solid-phase particles are blocked between the track between the body 1 and the cutter block group 21 or between the body 1 and the pushing sleeve 22, the thrust force of the cutter block group 21 by the cylindrical helical compression spring 14 and the friction force of the well wall cutter block group can not overcome the friction force between sliding parts, the cutter block group can not be automatically reset, when the blades can not be retracted after the reaming operation is finished, the forced reset ball 9 is put in, the pressure-holding and shearing forced reset nail 7 is pushed to descend, the cutter block group 21 is pushed to descend by the sliding sleeve 16 to realize forced reset, the cutter block group 21 is reset and then the forced reset ball 9 is continuously pressed, the forced reset ball 9 falls into the throttle circulation sleeve 49, the cylindrical helical compression spring 14 pushes the adjusting ring 13 to ascend, and the adjusting ring 13 and the central tube 4 are reset.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and their equivalents.
Claims (7)
1. The utility model provides a full discharge capacity is along with boring reaming instrument assembly, includes body, circlip for first hole, goes up lock sleeve, center tube, circlip for hole, first 0 type sealing washer, forced reset shear pin, carbide push ring, forced reset ball, slip cap and throttle circulation cover, its characterized in that: the body is connected with the upper locking sleeve through trapezoidal threads, the central tube is connected with the upper locking sleeve through a forced reset shear pin, a first hole elastic retainer ring is further arranged between the central tube and the upper locking sleeve and used for limiting, a backing ring and a hard alloy push ring are arranged in a central tube groove, a second hole elastic retainer ring is arranged on one side of the hard alloy push ring and used for limiting, an adjusting ring is arranged between the body and the central tube, a sliding sleeve is arranged in the body, a cylindrical helical compression spring is arranged between the adjusting ring and the sliding sleeve, a track groove is formed in the body, a push block is connected to the sliding sleeve through a pressing block, two push blocks are arranged between the push blocks, a knife block group is arranged in the track groove, a push sleeve is further arranged in the body, a lower locking sleeve is connected with one side of the hard alloy push ring through trapezoidal threads and is connected with the limiting sleeve through threads, a lower locking sleeve is connected with the throttling sleeve through threads, a throttling sleeve is connected with the throttling sleeve through an upper throttling sleeve through a throttling sleeve, a throttling sleeve is connected with a throttling sleeve through an upper throttling sleeve hole, a throttling sleeve is further arranged between the throttling sleeve and a throttling sleeve is connected with a throttling sleeve through a throttling sleeve, and a throttling sleeve is connected with a throttling sleeve through a throttling sleeve, and a circulating sleeve is further hole 35, and a circulating sleeve is connected with the throttling sleeve is arranged between the throttling sleeve is connected with the throttling sleeve through a supporting sleeve.
The forced reset shear pins, the lower switch Kong Jianding, the upper switch Kong Jianding and the open-pore locking pins are arranged in sequence from large to small according to the shearing pressure;
the utility model discloses a PDC cutting tooth, including the body, the track recess on the body adopts boss recess track, the track recess forms certain contained angle with the central axis, PDC cutting tooth and gauge protection tooth have been arranged on the sword piece group.
2. A full-displacement while-drilling reaming tool assembly in accordance with claim 1, wherein: the novel sealing device is characterized in that a first 0-type sealing ring is further arranged between the body and the upper locking sleeve for sealing, a second 0-type sealing ring is arranged between the central tube and the upper locking sleeve for sealing, the adjusting ring is in sealing with the upper locking sleeve through a third 0-type sealing ring, the pressing block is connected with the pushing block through a screw and is limited by a circlip for a third hole, a second Yx sealing ring is arranged between the body and the pushing sleeve for sealing, a first Yx sealing ring is arranged between the pushing sleeve and the central tube for sealing, a thirteenth 0-type sealing ring and a fifteenth 0-type sealing ring are further arranged between the body and the lower locking sleeve, a sixth 0-type sealing ring and an eighth 0-type sealing ring are further arranged between the lower locking sleeve and the limiting sleeve, a seventh 0-type sealing ring, a ninth 0-type sealing ring and an eleventh 0-type sealing ring are further arranged between the lower locking sleeve and the closing hole sleeve, a tenth 0-type sealing ring and a twelfth 0-type sealing ring are further arranged between the body, the sliding sleeve, the sliding joint and the fifth 0-type sealing ring are further arranged between the body and the fifth 0-type sealing ring.
3. A full-displacement while-drilling reaming tool assembly in accordance with claim 1, wherein: the body adopts high strength steel, and the upper end is provided with API standard drilling rod screw thread.
4. A full-displacement while-drilling reaming tool assembly in accordance with claim 1, wherein: and a certain bypass flow area is arranged between the throttling circulation sleeve and the lower joint in an empty mode, so that drilling fluid circulation is not affected when the lower flow is blocked.
5. A full-displacement while-drilling reaming tool assembly in accordance with claim 1, wherein: the forced reset ball is one of bakelite or resin.
6. A full-displacement while-drilling reaming tool assembly in accordance with claim 1, wherein: and three hard alloy water holes are uniformly distributed below the body, so that the reaming well wall can be conveniently cleaned.
7. A full-displacement while-drilling reaming tool assembly in accordance with claim 1, wherein: and the cutter block group is replaced by a centralizing block without PDC cutting teeth for hydraulic centralizing while drilling operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811596624.9A CN109458135B (en) | 2018-12-26 | 2018-12-26 | Full-displacement reaming-while-drilling tool assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811596624.9A CN109458135B (en) | 2018-12-26 | 2018-12-26 | Full-displacement reaming-while-drilling tool assembly |
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| Publication Number | Publication Date |
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| CN109458135A CN109458135A (en) | 2019-03-12 |
| CN109458135B true CN109458135B (en) | 2023-12-22 |
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| CN204386474U (en) * | 2015-01-07 | 2015-06-10 | 成都晋林石油机械有限责任公司 | Drill-following reamer |
| CN105888558A (en) * | 2016-06-17 | 2016-08-24 | 王岳 | Downhole reamer |
| CN106401485A (en) * | 2016-11-16 | 2017-02-15 | 长江大学 | Rotating return hydraulic hole opener |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6920944B2 (en) * | 2000-06-27 | 2005-07-26 | Halliburton Energy Services, Inc. | Apparatus and method for drilling and reaming a borehole |
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|---|---|---|---|---|
| CN102654024A (en) * | 2012-03-13 | 2012-09-05 | 中国海洋石油总公司 | Hydraulic chambering device for drilling |
| CN202673146U (en) * | 2012-06-06 | 2013-01-16 | 宝鸡石油机械有限责任公司 | Expanding type ball-throwing structure for reamer while drilling |
| CN204386474U (en) * | 2015-01-07 | 2015-06-10 | 成都晋林石油机械有限责任公司 | Drill-following reamer |
| CN105888558A (en) * | 2016-06-17 | 2016-08-24 | 王岳 | Downhole reamer |
| CN106401485A (en) * | 2016-11-16 | 2017-02-15 | 长江大学 | Rotating return hydraulic hole opener |
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| CN109458135A (en) | 2019-03-12 |
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