CN201106404Y - Reaming machine special for casing tube welldrilling - Google Patents

Reaming machine special for casing tube welldrilling Download PDF

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Publication number
CN201106404Y
CN201106404Y CNU2007201735689U CN200720173568U CN201106404Y CN 201106404 Y CN201106404 Y CN 201106404Y CN U2007201735689 U CNU2007201735689 U CN U2007201735689U CN 200720173568 U CN200720173568 U CN 200720173568U CN 201106404 Y CN201106404 Y CN 201106404Y
Authority
CN
China
Prior art keywords
rack shaft
drilling
reamer
piston
underreamer
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.)
Expired - Lifetime
Application number
CNU2007201735689U
Other languages
Chinese (zh)
Inventor
冯来
王辉
王力
郑万江
尹洪伟
于永亮
王建利
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China National Petroleum Corp
CNPC Engineering Technology R&D Co Ltd
Original Assignee
China National Petroleum Corp
CNPC Drilling Research Institute Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China National Petroleum Corp, CNPC Drilling Research Institute Co Ltd filed Critical China National Petroleum Corp
Priority to CNU2007201735689U priority Critical patent/CN201106404Y/en
Application granted granted Critical
Publication of CN201106404Y publication Critical patent/CN201106404Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to a special while drilling underreamer for casing drilling, which is applied to the drilling of the exploration and development of petroleum and naturalgas, and the special while drilling underreamer for casing drilling is characterized in that the upper part of an inner cavity of an outer shell is provided with a hydraulic cylinder, the inner part of which is provided with a rack shaft and a spring. The rack shaft is provided with a central through hole, and a piston which is coordinated with the hydraulic cylinder is arranged at the upper part of the rack shaft. The spring is arranged below the piston to support the piston, and a rack is arranged on the outer wall of the lower end of the rack shaft. The lower end of the central through hole of the rack shaft is fixed with a nozzle, and a groove is arranged on the outer shell. A blade of the underreamer is fixed in the groove through a pin roll, and the periphery of the blade of the underreamer is provided with a gear which is coordinated with the rack on the rack shaft. The effects is that the underreamer utilizes drilling fluid as power, carries out control for the blade of the underreamer through the rack shaft to realize automatic switching, enlarges a hole to the required size and extends the service life of an aiguille. The blade of the underreamer is inlaid with PDC cutting particles, which has the advantages of wear resistance, high hardness and long life, etc.

Description

The special-purpose drill-following reamer of casing drilling
Technical field
The utility model belongs to the downhole drill instrument in the petroleum natural gas exploration, specifically is that a kind of casing drilling special use is with boring the reaming hole device.
Background technology
In the conventional drilling process, need a large amount of drilling tool of employing, as drilling rod, drill collar, transportation, maintenance, check, the replacing of drilling tool will appear, the damage, the replacing that also bring the drilling tool annex simultaneously.In the well cementation process, also have more problems such as sleeve pipe and casing hardware.Any one link goes wrong, and all can influence wellbore quality, waste lot of manpower and material resources and expense.
At present, for solving the problem that is occurred in above-mentioned drilling well and the well cementation process, often adopt casing drilling technology to finish the drilling well and the well cementation of oil well.For the casing drilling of interchangeable bit, the bit diameter that require to adopt could be realized the replaceable of drill bit less than casing diameter, but diameter less than the borehole diameter that drill bit got out of casing diameter less than casing diameter, sleeve pipe can't G.I.H.And conventional reamer complex structure is not easy to manufacture, and is not suitable for casing drilling.When casing drilling, often adopt the mode of pilot bit and drill-following reamer combination to creep into, pilot bit leads eye to creep into, and drill-following reamer expands well to the size of requirement.
Chinese patent notification number CN2761807Y provides a kind of While-drilling borehole expander that is used for drilling well.Adopted and be equipped with on tool body that up and down cavity and cut drill and spring are fixed by fixed screw and steady pin, drill bit is being connected with lower chamber by steady pin, cause the spring surrender when hydraulic pressure rises to specified hydraulic pressure, cut drill is stretched out body, carries out reaming.Notification number CN2653113Y provides a kind of hydraulic expansion formula PDC reamer.Link to each other with piston on push rod top, spring support piston, nozzle are fixed on push rod top heart portion, and the pressure regulation bar is fixed on the pressure regulation shaft bar by screw thread, the PDC cutting teeth is housed on the reaming hole wing, and push rod utilizes the convergent-divergent of the extension and contraction control reaming hole wing of spring with limited block.These drilling well eye expanders can be finished the well reaming, but are not suitable for using in casing drilling.
Summary of the invention
The purpose of this utility model is: provide a kind of casing drilling special-purpose drill-following reamer, the drill-following reamer that well can be enlarged in casing drilling.
The purpose of this utility model is achieved in that the special-purpose drill-following reamer of casing drilling mainly is made up of shell body, rack shaft, spring, nozzle, jump ring, reamer blade and bearing pin.On shell body inner chamber top fluid cylinder is arranged, rack shaft and spring are arranged in fluid cylinder.Rack shaft has central through hole.Piston is arranged at the top of rack shaft, and piston cooperates with fluid cylinder.Spring is in the lower end of piston, support piston.On the lower end outer wall of rack shaft tooth bar is arranged.Lower end at the rack shaft central through hole is fixed with nozzle.On shell body, have groove, be fixed with the reamer blade by bearing pin in the groove.The reamer blade is with the gear that cooperates with tooth bar on the rack shaft outward.In the reaming hole process, the pressure of drilling fluid acts on the piston, and the promotion rack shaft moves downward.The gear of the rack drives reamer blade of rack shaft rotates, and the reamer blade is protruding, plays the reaming hole effect.By piston compression or retracting spring, rack shaft is moved up and down along the shell body inner chamber, thereby driving reamer blade open or regain.
Described nozzle is fixed on rack shaft central through hole lower end, and its fixed form is fixing by jump ring.
In order to improve sealing performance, the piston on described rack shaft top is with sealing ring outward; Outside the rack shaft bottom, be with sealing ring.
In order to improve reaming hole efficient, be inlaid with PDC cutting particle on the described reamer blade.
The beneficial effects of the utility model are: it is designed that the special-purpose drill-following reamer of casing drilling aims at casing drilling.Top at the special-purpose drill-following reamer of casing drilling connects down-hole locking tool string, and the bottom connects drill bit.During circulation of drilling fluid work, the nozzle on the rack shaft produces the downward driving force to rack shaft, drives the reamer blade and opens.During termination of pumping, it is up that spring drives rack shaft, and the reamer blade is regained.Utilize drilling fluid as power, the reamer blade is controlled, realize automatic shutter by rack shaft.This reamer can expand well to the size of requirement, prolongs drilling life of bit; Be inlaid with PDC cutting particle on the reamer blade and have advantages such as wear-resistant, that hardness is high, the life-span is long.
Description of drawings
Fig. 1 is the special-purpose drill-following reamer generalized section of casing drilling.
Among the figure, 1. shell body, 2. sealing ring, 3. rack shaft, 4. spring, 5. sealing ring, 6. nozzle, 7. jump ring, 8. reamer blade, 9. bearing pin.
The specific embodiment
Embodiment 1: consult Fig. 1.With the special-purpose drill-following reamer of the casing drilling of a φ 273mm is example, is elaborated.
245 millimeters of shell body 1 external diameters of the special-purpose drill-following reamer of casing drilling.160 millimeters of shell body 1 inner chamber top fluid cylinder internal diameters, 450 millimeters of length.Rack shaft 3 and compression spring 4 are arranged in fluid cylinder.710 millimeters of rack shaft 3 length, 300 millimeters of the upper piston of rack shaft 3, rack shaft 3 upper piston are with 3 road sealing rings 2 outward, 50 millimeters of rack shaft 3 central through holes.Spring 4 is in the lower end of piston, support piston.Spring 4 adopts compression spring, 260 millimeters of spring 4 length.On the lower end outer wall of rack shaft 3 tooth bar is arranged.Outside the bottom of rack shaft 3 tooth bars, be with sealing ring 5.Be fixed with a nozzle 6 in the lower end of rack shaft 3 central through holes, nozzle 6 is fixing by jump ring 7.On shell body 1, have 3 grooves, be fixed with 3 reamer blades 8 by bearing pin 9 respectively in the groove.Reamer blade 8 is outer to be with the gear that cooperates with tooth bar on the rack shaft 3.Be inlaid with PDC cutting particle on the reamer blade 8.

Claims (4)

1, the special-purpose drill-following reamer of a kind of casing drilling, mainly by shell body (1), rack shaft (3), spring (4), nozzle (6), jump ring (7), reamer blade (8) and bearing pin (9) are formed, it is characterized in that: fluid cylinder is arranged on shell body (1) inner chamber top, rack shaft (3) and spring (4) are arranged in fluid cylinder, rack shaft (3) has central through hole, piston is arranged at the top of rack shaft (3), piston cooperates with fluid cylinder, spring (4) is in the lower end of piston, support piston, on the lower end outer wall of rack shaft (3) tooth bar is arranged, lower end at rack shaft (3) central through hole is fixed with nozzle (6), have groove on shell body (1), is fixed with reamer blade (8) by bearing pin (9) in the groove, reamer blade (8) is with the gear that cooperates with tooth bar on the rack shaft (3) outward.
2, the special-purpose drill-following reamer of casing drilling according to claim 1 and 2, it is characterized in that: described nozzle (6) is fixed on rack shaft (3) central through hole lower end, and its fixed form is fixing by jump ring (7).
3, the special-purpose drill-following reamer of casing drilling according to claim 1 and 2, it is characterized in that: the piston on described rack shaft (3) top is with sealing ring (2) outward; Outside rack shaft (3) bottom, be with sealing ring (5).
4, the special-purpose drill-following reamer of casing drilling according to claim 1 and 2 is characterized in that: be inlaid with PDC cutting particle on the described reamer blade (8).
CNU2007201735689U 2007-10-10 2007-10-10 Reaming machine special for casing tube welldrilling Expired - Lifetime CN201106404Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007201735689U CN201106404Y (en) 2007-10-10 2007-10-10 Reaming machine special for casing tube welldrilling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007201735689U CN201106404Y (en) 2007-10-10 2007-10-10 Reaming machine special for casing tube welldrilling

Publications (1)

Publication Number Publication Date
CN201106404Y true CN201106404Y (en) 2008-08-27

Family

ID=39958204

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2007201735689U Expired - Lifetime CN201106404Y (en) 2007-10-10 2007-10-10 Reaming machine special for casing tube welldrilling

Country Status (1)

Country Link
CN (1) CN201106404Y (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102003146A (en) * 2010-11-04 2011-04-06 中国石油天然气集团公司 Full-hydraulic reamer
CN102187052A (en) * 2008-10-13 2011-09-14 国际壳牌研究有限公司 Systems and methods of forming subsurface wellbores
CN102561951A (en) * 2012-01-14 2012-07-11 中国石油天然气集团公司 Double-stage and double-speed well drilling tool
CN103046871A (en) * 2012-12-30 2013-04-17 中北大学 Hydra-mechanical reducing bit broaching while drilling
CN103154418A (en) * 2010-08-26 2013-06-12 贝克休斯公司 Remotely-controlled downhole device and method for using same
CN103924929A (en) * 2014-05-14 2014-07-16 衢州市易凡设计有限公司 Intelligent double-expanding-blade reaming pile machine drill bit
CN105401883A (en) * 2014-05-14 2016-03-16 衢州市易凡设计有限公司 Pile hole intelligent expanding method
CN106639883A (en) * 2012-10-22 2017-05-10 哈里伯顿能源服务公司 Control module for downwards-drilling tool
US9725958B2 (en) 2010-10-04 2017-08-08 Baker Hughes Incorporated Earth-boring tools including expandable members and status indicators and methods of making and using such earth-boring tools
CN110159185A (en) * 2019-05-21 2019-08-23 西安航空职业技术学院 A kind of hydraulic rotary drill-following reamer
CN111236845A (en) * 2020-03-06 2020-06-05 西华大学 Novel reaming tool while drilling
CN112252983A (en) * 2020-11-04 2021-01-22 中国矿业大学(北京) Hydraulic hole expanding drill bit

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102187052B (en) * 2008-10-13 2015-01-07 国际壳牌研究有限公司 Systems and methods of forming subsurface wellbores
CN102187052A (en) * 2008-10-13 2011-09-14 国际壳牌研究有限公司 Systems and methods of forming subsurface wellbores
CN103154418B (en) * 2010-08-26 2015-05-06 贝克休斯公司 Remotely-controlled downhole device and method for using same
CN103154418A (en) * 2010-08-26 2013-06-12 贝克休斯公司 Remotely-controlled downhole device and method for using same
US9725958B2 (en) 2010-10-04 2017-08-08 Baker Hughes Incorporated Earth-boring tools including expandable members and status indicators and methods of making and using such earth-boring tools
CN102003146B (en) * 2010-11-04 2012-12-12 中国石油天然气集团公司 Full-hydraulic reamer
CN102003146A (en) * 2010-11-04 2011-04-06 中国石油天然气集团公司 Full-hydraulic reamer
CN102561951A (en) * 2012-01-14 2012-07-11 中国石油天然气集团公司 Double-stage and double-speed well drilling tool
CN106639883B (en) * 2012-10-22 2019-01-15 哈里伯顿能源服务公司 For being drilled down into the control module of tool
CN106639883A (en) * 2012-10-22 2017-05-10 哈里伯顿能源服务公司 Control module for downwards-drilling tool
CN103046871A (en) * 2012-12-30 2013-04-17 中北大学 Hydra-mechanical reducing bit broaching while drilling
CN105113992A (en) * 2014-05-14 2015-12-02 衢州市易凡设计有限公司 Intelligent double-reamer wing reaming pile machine drill bit
CN105401883A (en) * 2014-05-14 2016-03-16 衢州市易凡设计有限公司 Pile hole intelligent expanding method
CN103924929A (en) * 2014-05-14 2014-07-16 衢州市易凡设计有限公司 Intelligent double-expanding-blade reaming pile machine drill bit
CN110159185A (en) * 2019-05-21 2019-08-23 西安航空职业技术学院 A kind of hydraulic rotary drill-following reamer
CN111236845A (en) * 2020-03-06 2020-06-05 西华大学 Novel reaming tool while drilling
CN112252983A (en) * 2020-11-04 2021-01-22 中国矿业大学(北京) Hydraulic hole expanding drill bit

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C14 Grant of patent or utility model
CX01 Expiry of patent term

Granted publication date: 20080827

CX01 Expiry of patent term