CN102619466A - Rotary eccentric casing pipe internally drilling device - Google Patents
Rotary eccentric casing pipe internally drilling device Download PDFInfo
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- CN102619466A CN102619466A CN2011100366743A CN201110036674A CN102619466A CN 102619466 A CN102619466 A CN 102619466A CN 2011100366743 A CN2011100366743 A CN 2011100366743A CN 201110036674 A CN201110036674 A CN 201110036674A CN 102619466 A CN102619466 A CN 102619466A
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Abstract
The invention relates to a rotary eccentric casing pipe internally drilling device, which is applied to the field of petroleum and natural gas exploration and development. According to the device, an eccentric steering mechanism is fixedly arranged in a casing pipe through an anchoring device, enters a casing pipe milling tool with a milling bit to mill the casing pipe, and then enters a drilling tool with a rotary drilling bit to drill in the ground. When the drilling is performed in the ground, a rotary driving mechanism drives a hose and the drilling bit to rotate, so that the friction between the hose and the steering mechanism is effectively overcome, and then the efficient drilling degree in the ground is improved. At the same time, due to the adoption of the eccentric steering mechanism, the hose drilling into the ground is allowed to obtain higher steering radius, and the hose can more easily enter the ground by the steering mechanism. Furthermore, the device does not require higher spraying pressure, so the requirement on the liquid supply pressure of ground equipment is reduced.
Description
Affiliated technical field
The present invention relates to a kind of a kind of rotating eccentricity formula sleeve pipe internal drilling device that is used for oil, natural gas exploration and development field.
Background technology
Be applicable to the exploitation of low permeability reservoirs by the method for in the stratum, creeping in the sleeve pipe, can effectively improve and rush down the long-pending and rate of oil and gas recovery of pasta.At present, sleeve pipe internal drilling device commonly used is to carry the liquid with certain pressure by surface pump, and to the down-hole, flexible pipe utilizes the high-pressure injection of jet bit after turning to through steering gear in the stratum, carry out irrotational slip and creep into through flexible pipe.In drilling process; Flexible pipe rigidity under the effect of internal liquid high pressure is very strong; And steering gear is a formula structure placed in the middle, and the frictional resistance that produces between flexible pipe and the steering gear is bigger, and drilling apparatus only possesses irrotational slip and creeps into function; Can't overcome frictional resistance so it exists during through steering gear, be difficult to the difficulty that realizes that long distance is slided and crept into.Simultaneously, high-pressure injection slides to creep into needs surface pump that higher hydraulic coupling is provided, therefore very high to the voltage endurance capability requirement of surface pump and manifold, has limited this The Application of Technology.
Summary of the invention
The present invention is when in the stratum, creeping into, and effectively overcomes the frictional resistance between flexible pipe and the steering mechanism, improves the drilling depth that in the stratum, creeps into; Adopt eccentric steering mechanism simultaneously, make flexible pipe obtain bigger turning radius, get into the stratum through steering gear more easily; And, reduce requirement to the ground installation liquid supply pressure.The objective of the invention is provides a kind of rotating eccentricity formula sleeve pipe internal drilling device for the scene.
The present invention is achieved in that it comprises top connection, eccentric steering mechanism, flexible shaft, junk bit, anchor, flexible pipe, rotary drilling drill bit.Characteristic of the present invention is: oil pipe, top connection, eccentric steering mechanism, anchor from top to bottom are linked in sequence, and anchor can be fixed on all parts on its top in the sleeve pipe, and possesses recyclable function.By being lowered in the oil pipe in the eccentric steering mechanism, rotary drive mechanism can drive junk bit through flexible shaft and rotate coiled tubing with rotary drive mechanism, flexible shaft, junk bit.
Coiled tubing with rotary drive mechanism, flexible pipe, rotary drilling drill bit by being lowered in the oil pipe in the eccentric steering mechanism; Rotary drive mechanism can rotate through flexible shaft driven in rotation Drilling bore bit, and the rotary drilling drill bit is configured to airtight fluid passage through flexible pipe and rotary driving machine.
This device anchor is that eccentric steering mechanism provides immobilizing foundation, and milling and boring means provide moment of torsion by rotary drive mechanism, and the pressure of the drill is provided by the deadweight of instrument.The worn out sleeve pipe of section mill cutter that at first will have junk bit during operation is lowered to the stratum boring means that has the rotary drilling drill bit then and in the stratum, creeps into.
The technical scheme that the present invention adopted is: at first, with oil pipe the part tool string is being lowered to the construction location in the sleeve pipe, anchor is at the tool string foot, and for whole device provides immobilizing foundation in sleeve pipe, anchor top connects eccentric steering mechanism.Then, by being lowered in the oil pipe in the eccentric steering mechanism, construct by the beginning casing milling with rotary drive mechanism, flexible shaft, junk bit for the use coiled tubing.During the milling sleeve pipe, surface pump feed flow driven in rotation driving mechanism rotates, and drives flexible shaft, junk bit rotation, until worn out sleeve pipe.After drilling sleeve pipe; With coiled tubing rotary drive mechanism, flexible pipe, rotary drilling drill bit are rotated in the steering gear by being lowered in the oil pipe again; Surface pump feed flow driven in rotation driving mechanism rotates; Drive flexible pipe, rotary drilling drill bit are rotated in the stratum and creep into, and liquid flow to the rotary drilling drill bit through flexible pipe, for drill bit provides lubricated and has the rock of taking function.
Advantage of the present invention is: can effectively overcome the frictional resistance between flexible pipe and steering mechanism, flexible pipe and the stratum, improve the drilling depth degree that in the stratum, effectively creeps into.Therefore and this device need not higher expulsion pressure, reduced the requirement to the ground installation liquid supply pressure, enlarged should technology the scope of application.
Description of drawings
Fig. 1 is the BHA structural representation of milling sleeve pipe of the present invention.
Fig. 2 is the BHA structural representation of the present invention's rotary drilling in the stratum.
1. sleeve pipes among the figure, 2. oil pipe, 3. coiled tubing, 4. rotary drive mechanism, 5. top connection, 6. eccentric steering mechanism, 7. flexible shaft, 8. junk bit, 9. anchor, 10. flexible pipe, 11. rotary drilling drill bits
The specific embodiment
1. Fig. 2 are described further the present invention below in conjunction with Figure of description.
In Fig. 1, coiled tubing 3, rotary drive mechanism 4, top connection 5, flexible shaft 7 link together with junk bit 8, and eccentric steering mechanism 6 links to each other with anchor 9.Flexible shaft 7 and junk bit 8 are in eccentric steering mechanism 6 chambeies, and whole drilling tool structure is anchored on sleeve pipe 1 inwall through anchor 9.
In Fig. 2, coiled tubing 3, rotary drive mechanism 4, top connection 5 flexible pipes 10 link together with rotary-jet drill bit 11, and eccentric steering mechanism 6 links to each other with anchor 9.Flexible pipe 10 and rotary drilling drill bit 11 are in rotary drive mechanism 6 chambeies, and whole drilling tool structure is anchored on sleeve pipe 1 inwall through anchor 9.
At first; With oil pipe 2 top connection 5, eccentric steering mechanism 6, anchor 9 are lowered to the construction location in the sleeve pipe; Top connection 5, eccentric steering mechanism 6, anchor 9 are linked in sequence, and anchor 9 is at the tool string foot, for whole device provides immobilizing foundation in sleeve pipe.Then, by being lowered in the oil pipe 2 in the eccentric steering mechanism 6, construct by the beginning casing milling with rotary drive mechanism 6, flexible shaft 7, junk bit 8 for use coiled tubing 3.During the milling sleeve pipe, surface pump feed flow driven in rotation driving mechanism 4 rotates, and drives flexible shaft 7, junk bit 8 rotations, until worn out sleeve pipe.Behind the worn out sleeve pipe, use coiled tubing 3 that rotary drive mechanism 6, flexible shaft 7, junk bit 8 are tripped out to ground.
Then again with coiled tubing 2 with rotary drive mechanism 4, flexible pipe 10, rotary drilling drill bit 11 by being lowered in the oil pipe 2 in the eccentric steering mechanism 6; Surface pump feed flow driven in rotation driving mechanism 4 rotates; Drive flexible pipe 10, rotary drilling drill bit 11 are rotated in the stratum and creep into; Liquid flow to rotary drilling drill bit 11 through flexible pipe 10, for drill bit provides lubricated and has the rock of taking function.
Claims (6)
1. rotating eccentricity formula sleeve pipe internal drilling device; Comprise coiled tubing (3), rotary drive mechanism (4), anchor (9); It is characterized in that: oil pipe (2), top connection (5), eccentric steering mechanism (6), anchor (9) from top to bottom are linked in sequence, and anchor (9) is fixed on all parts on its top in the sleeve pipe (1).
2. a kind of rotating eccentricity formula sleeve pipe internal drilling device according to claim 1 is characterized in that: top connection (5) and eccentric steering mechanism (6) be through being threaded, and eccentric steering mechanism (6) and anchor (9) are through being threaded.
3. a kind of rotating eccentricity formula sleeve pipe internal drilling device according to claim 1, it is characterized in that: eccentric steering mechanism (6) is divided into two parts, and top is tubulose, and the bottom is a tabular, and two parts link together through screw.
4. a kind of rotating eccentricity formula sleeve pipe internal drilling device according to claim 1 is characterized in that: top connection (5) is eccentric in sleeve pipe (1), and eccentric steering mechanism (6) top is eccentric in sleeve pipe (1), and the lower part is placed in the middle in sleeve pipe (1).
5. a kind of rotating eccentricity formula sleeve pipe internal drilling device according to claim 1; It is characterized in that: coiled tubing (3) with rotary drive mechanism (4), flexible shaft (7), junk bit (8) by being lowered in the oil pipe (2) in the eccentric steering mechanism (6); Coiled tubing (3), rotary drive mechanism (4), flexible shaft (7) from top to bottom are linked in sequence with driving junk bit (8); Coiled tubing (3), rotary drive mechanism (4) are in oil pipe (2), and flexible shaft (7) and driving junk bit (8) are in eccentric steering mechanism (6).
6. a kind of rotating eccentricity formula sleeve pipe internal drilling device according to claim 1; It is characterized in that: coiled tubing (3) with rotary drive mechanism (4), flexible pipe (10), rotary drilling drill bit (11) by being lowered in the oil pipe (2) in the eccentric steering mechanism (6); Coiled tubing (3), rotary drive mechanism (4), flexible pipe (10), rotary drilling drill bit (11) from top to bottom are linked in sequence; Coiled tubing (3), rotary drive mechanism (4) are in oil pipe (2), and flexible pipe (10) and rotary drilling drill bit (11) are in eccentric steering mechanism (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100366743A CN102619466A (en) | 2011-01-31 | 2011-01-31 | Rotary eccentric casing pipe internally drilling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100366743A CN102619466A (en) | 2011-01-31 | 2011-01-31 | Rotary eccentric casing pipe internally drilling device |
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| Publication Number | Publication Date |
|---|---|
| CN102619466A true CN102619466A (en) | 2012-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100366743A Pending CN102619466A (en) | 2011-01-31 | 2011-01-31 | Rotary eccentric casing pipe internally drilling device |
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| CN (1) | CN102619466A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105339582A (en) * | 2013-06-24 | 2016-02-17 | 鱼骨公司 | An improved method and device for making a lateral opening out of a wellbore |
| CN115839211A (en) * | 2022-11-09 | 2023-03-24 | 江西省地质工程集团有限公司 | Rock-soil perforating and blasting operation perforating machine with stratum structure detection function |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5423387A (en) * | 1993-06-23 | 1995-06-13 | Baker Hughes, Inc. | Method for sidetracking below reduced-diameter tubulars |
| WO1999029997A1 (en) * | 1997-12-04 | 1999-06-17 | Cherry Donald E | Apparatus for drilling lateral drainholes from a wellbore |
| CN2784576Y (en) * | 2005-02-01 | 2006-05-31 | 中国石化集团胜利石油管理局钻井工艺研究院 | Combined window opening tool |
| CN101660391A (en) * | 2008-08-29 | 2010-03-03 | 中国石油天然气集团公司 | Radial horizontal drilling device |
| CN202023504U (en) * | 2011-01-31 | 2011-11-02 | 中国石油化工集团公司 | Rotary eccentric casing drilling device |
-
2011
- 2011-01-31 CN CN2011100366743A patent/CN102619466A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5423387A (en) * | 1993-06-23 | 1995-06-13 | Baker Hughes, Inc. | Method for sidetracking below reduced-diameter tubulars |
| WO1999029997A1 (en) * | 1997-12-04 | 1999-06-17 | Cherry Donald E | Apparatus for drilling lateral drainholes from a wellbore |
| CN2784576Y (en) * | 2005-02-01 | 2006-05-31 | 中国石化集团胜利石油管理局钻井工艺研究院 | Combined window opening tool |
| CN101660391A (en) * | 2008-08-29 | 2010-03-03 | 中国石油天然气集团公司 | Radial horizontal drilling device |
| CN202023504U (en) * | 2011-01-31 | 2011-11-02 | 中国石油化工集团公司 | Rotary eccentric casing drilling device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105339582A (en) * | 2013-06-24 | 2016-02-17 | 鱼骨公司 | An improved method and device for making a lateral opening out of a wellbore |
| CN105339582B (en) * | 2013-06-24 | 2019-01-15 | 鱼骨公司 | The improved method and apparatus of lateral openings are produced from wellbore |
| CN115839211A (en) * | 2022-11-09 | 2023-03-24 | 江西省地质工程集团有限公司 | Rock-soil perforating and blasting operation perforating machine with stratum structure detection function |
| CN115839211B (en) * | 2022-11-09 | 2024-07-16 | 江西省地质工程集团有限公司 | Perforating machine with stratum structure detection function for rock-soil penetrating operation |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20120801 |