CN102561951A - Double-stage and double-speed well drilling tool - Google Patents
Double-stage and double-speed well drilling tool Download PDFInfo
- Publication number
- CN102561951A CN102561951A CN2012100111931A CN201210011193A CN102561951A CN 102561951 A CN102561951 A CN 102561951A CN 2012100111931 A CN2012100111931 A CN 2012100111931A CN 201210011193 A CN201210011193 A CN 201210011193A CN 102561951 A CN102561951 A CN 102561951A
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Abstract
A double-stage and double-speed well drilling tool comprises a shell. The lower end of the shell is connected with a reaming bit, a spindle is disposed in the shell, the upper end of the spindle is connected with a press cap in a threaded manner, the lower end of the spindle is connected with a guiding bit in a threaded manner, an annular space is formed among the spindle, the press cap and the shell, an upper rotor bearing, a hydraulic motor, a lower rotor bearing and a thrust bearing are successively mounted on the outer wall of the spindle below the press cap, a flow distributing channel is disposed on the spindle, a reaming bit water hole is arranged on the reaming bit, the flow distributing channel and the reaming bit water hole are respectively communicated with the annular space among the spindle, the press cap and the shell, and a guiding bit water hole is arranged on the guiding bit, and is communicated with the flow distributing channel. The double-stage and double-speed well drilling tool can greatly increase drilling speed of well drilling machinery and reduce well drilling cost.
Description
Technical field
The invention belongs to exploitation of oil-gas field drilling technology field, particularly a kind of twin-stage double speed drilling tool.
Background technology
Along with the development of oil field prospecting to deep formation, the quantity of deep drilling increases year by year.Increase along with well depth; The not only drilling well fluid column chip hold down effect aggravation of layer over the ground; And the intensity of formation rock itself, stress, corresponding increase such as stress flatly vertically; The drillability variation of formation rock causes rate of penetration to reduce, and has badly influenced the drilling period and the drilling cost of full well.
Patent CN 1831290A has mentioned a kind of double-step cutting structure bit; The carbide cutting spare proud exposure of this double-step cutting structure bit is greater than the proud exposure of PDC cutting members; Carbide cutting spare is formed first order cutting structure, and the PDC cutting members is formed second level cutting members.Because this double-step cutting structure bit is made up of one, and can only drive, can only single speed creep into by down-hole recirculated water power or ground machine power; Therefore the drill bit bulk life time is lower; Can not reach effective raising drilling machinery speed, reduce the purpose of drilling cost, the scope of application is less.
Summary of the invention
In order to solve the problem that exists in the background technology, the invention provides a kind of twin-stage double speed drilling tool, this instrument can increase substantially the drilling machinery drilling speed, reduces drilling cost.
The technical scheme that the present invention adopted is: this twin-stage double speed drilling tool, comprise shell, and the shell lower end is connected with re-drill bit; Be provided with main shaft in the shell; Main shaft upper end screw thread is connected with pressure cap, and main shaft lower end screw thread is connected with leads a drill bit, between main shaft and pressure cap and the shell annular space is arranged; The spindle outer wall of pressure cap below is equipped with alignment bearing, fluid motor, following alignment bearing and thrust bearing successively; Main shaft is provided with split channel, has the re-drill bit hydrophthalmia on the re-drill bit, and split channel and re-drill bit hydrophthalmia communicate with annular space between the shell with main shaft and pressure cap respectively; Lead to have on the drill bit and lead a bit port, lead a bit port and communicate with split channel.
The beneficial effect that the present invention had is: this instrument drives fluid motor by the down-hole circulation fluid; Pressing high rotating speed to drive with bradawl leads a drill bit, gets out one section minor diameter earlier and lead eye, simultaneously; Ground machine power drives drill string, forces down rotating speed drive re-drill bit with wammel and carries out reaming hole.It is less relatively to lead a bit diameter on the one hand, and rotating speed is higher relatively, and the potentiality that improve rate of penetration are arranged.Stratum that re-drill bit bores has more a bigger scope of freedom on the other hand, has discharged reservoir stress, destroys the stress field on stratum, helps improving rate of penetration, prolongs drilling life of bit.Therefore the twin-stage double speed drilling tool and the drill bit of the present invention's development can increase substantially the drilling machinery drilling speed, reduce drilling cost.
1) leading a drill bit and re-drill bit among the present invention is the split structure design, and installing and replacing is convenient, can change separately according to actual conditions; 2) lead a drill bit and re-drill bit among the present invention and driven by twin-stage double speed drilling tool fluid motor and twin-stage double speed drilling tool shell respectively, relative rotation speed is different, the pressure of the drill is different.Therefore can design use different performance efficiently lead a drill bit and re-drill bit, effectively reduce bit wear, reduce the number of times that makes a trip, improve rate of penetration; 3) the present invention lead a drill bit diameter less than the re-drill bit diameter, and be installed in the re-drill bit lower end, with re-drill bit at a distance of certain distance; Leading a drill bit gets out one section minor diameter earlier and leads eye; Re-drill bit carries out reaming hole again, so the present invention not only makes re-drill bit stratum to be bored have more a bigger scope of freedom, effectively improves rate of penetration; And have good hold angle function, can avoid forming serious " dog-leg "; 4) the present invention is reasonable in design, and is safe and reliable, and site plant is not had any specific (special) requirements.
Description of drawings:
Fig. 1 is a structural representation of the present invention.
Among the figure: the 1-shell, the 2-pressure cap, the 3-main shaft, the last alignment bearing of 4-, the 5-fluid motor, alignment bearing under the 6-, the 7-thrust bearing, the 8-re-drill bit, 9-seals wear ring, and 10-leads a drill bit, the 11-split channel, 12-re-drill bit hydrophthalmia, 13-leads a bit port.
The specific embodiment:
Below in conjunction with accompanying drawing the present invention is further specified: shown in accompanying drawing 1, this twin-stage double speed drilling tool comprises shell 1, and shell 1 upper end is connected with top drilling well tubing string through screw thread; Shell 1 lower end screw thread is connected with re-drill bit 8; Be provided with main shaft 3 in the shell 1, main shaft 3 upper end screw threads are connected with pressure cap 2, and main shaft 3 lower end screw threads are connected with leads a drill bit 10; Between main shaft 3 and pressure cap 2 and the shell 1 annular space is arranged; Main shaft 3 outer walls of pressure cap 2 belows are equipped with alignment bearing 4, fluid motor 5, following alignment bearing 6 and thrust bearing 7 successively, and main shaft 3 one ends are processed with the drilling fluid runner, can the part drilling fluid be reached and lead a drill bit 10.Pressure cap 2 plays last alignment bearing 4, fluid motor 5, alignment bearing 6, thrust bearing 7 are fixed on the effect on the main shaft 3 down.Main shaft 3 is provided with split channel 11; Have re-drill bit hydrophthalmia 12 on the re-drill bit 8; Split channel 11 and re-drill bit hydrophthalmia 12 communicate with annular space between the shell 1 with main shaft 3 and pressure cap 2 respectively; Lead to have on the drill bit 10 and lead a bit port 13, lead a bit port 13 and communicate with split channel 11, drilling fluid is entered into to lead to drive in the bit port 13 by split channel 11 leads a drill bit 10 rotations.Drilling fluid enters into 12 pairs of re-drill bits 8 of re-drill bit hydrophthalmia has cleaning action.
Be provided with sealing wear ring 9 between re-drill bit 8 and the main shaft 3.Sealing wear ring 9 plays sealing and wear-resisting effect.
In the oil gas well drilling process, twin-stage double speed drilling tool is installed in drilling well tubing string lower end, behind the turn on pump; Drilling fluid reaches twin-stage double speed drilling tool via drilling rod; And drive fluid motor 5, and 3 rotations of fluid motor 5 driving main shaft, main shaft 3 drives leads a drill bit 10 rotations.Drilling rod drives 1 rotation of twin-stage double speed drilling tool shell, and shell 1 drives re-drill bit 8 rotations.Drilling fluid can get into re-drill bit 8 respectively and lead a drill bit 10 after the drilling fluid flow manifold shunting of main shaft 3 lower ends.Because it is different with the power resources of re-drill bit 8 to lead a drill bit 10, so it is different with the working speed of re-drill bit 8 to lead a drill bit 10.Owing to lead the diameter of the diameter of a drill bit 10, and be installed in re-drill bit 8 lower ends less than re-drill bit 8, with re-drill bit 8 at a distance of certain distance; Therefore leading a drill bit 10 gets out one section minor diameter earlier and leads eye; Make re-drill bit 10 stratum to be bored have more a bigger scope of freedom, destroy the stress field that re-drill bit 10 waits to bore the stratum, make re-drill bit 10 wait to bore the stratum reservoir stress and effectively discharged; In addition re-drill bit 8 with lead a drill bit 10 and all can change separately; Therefore this invention can effectively improve rate of penetration, effectively improves drilling life of bit, reduces drilling cost significantly.
Claims (2)
1. twin-stage double speed drilling tool; Comprise shell (1); It is characterized in that: described shell (1) lower end is connected with re-drill bit (8), is provided with main shaft (3) in the shell (1), and main shaft (3) upper end screw thread is connected with pressure cap (2); Main shaft (3) lower end screw thread is connected with leads a drill bit (10); Between main shaft (3) and pressure cap (2) and the shell (1) annular space is arranged, main shaft (3) outer wall of pressure cap (2) below is equipped with alignment bearing (4), fluid motor (5), following alignment bearing (6) and thrust bearing (7) successively, and main shaft (3) is provided with split channel (11); Have re-drill bit hydrophthalmia (12) on the re-drill bit (8); Split channel (11) and re-drill bit hydrophthalmia (12) communicate with annular space between the shell (1) with main shaft (3) and pressure cap (2) respectively, lead to have on the drill bit (10) and lead a bit port (13), lead a bit port (13) and communicate with split channel (11).
2. twin-stage double speed drilling tool according to claim 1 is characterized in that: be provided with sealing wear ring (9) between re-drill bit (8) and the main shaft (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100111931A CN102561951A (en) | 2012-01-14 | 2012-01-14 | Double-stage and double-speed well drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100111931A CN102561951A (en) | 2012-01-14 | 2012-01-14 | Double-stage and double-speed well drilling tool |
Publications (1)
| Publication Number | Publication Date |
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| CN102561951A true CN102561951A (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100111931A Pending CN102561951A (en) | 2012-01-14 | 2012-01-14 | Double-stage and double-speed well drilling tool |
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| CN (1) | CN102561951A (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563860A (en) * | 2013-10-27 | 2015-04-29 | 中国石油化工集团公司 | Double-stage double-rotating-speed well drilling device |
| CN105443041A (en) * | 2015-11-17 | 2016-03-30 | 中国石油大学(华东) | Differential pressure type drill |
| CN106639865A (en) * | 2015-10-30 | 2017-05-10 | 中石化石油工程技术服务有限公司 | Graded cutting device |
| CN106930689A (en) * | 2015-12-29 | 2017-07-07 | 中石化石油工程技术服务有限公司 | Friction speed Split type drill driver |
| CN106930686A (en) * | 2015-12-29 | 2017-07-07 | 中石化石油工程技术服务有限公司 | Eccentric double rank broken rock devices |
| CN107386961A (en) * | 2017-08-04 | 2017-11-24 | 四川深远石油钻井工具股份有限公司 | A kind of drilling speed device |
| CN107386960A (en) * | 2017-08-04 | 2017-11-24 | 四川深远石油钻井工具股份有限公司 | A kind of drilling speed device with composite drill bit |
| CN108487864A (en) * | 2018-03-19 | 2018-09-04 | 中煤科工集团西安研究院有限公司 | The double dynamical major diameter staged borehole-enlarging drilling tool of underground coal mine rock stratum directional hole and method |
| CN109915028A (en) * | 2019-04-23 | 2019-06-21 | 西南石油大学 | The motor-driven double speed PDC drill bit of battery type |
| CN109989707A (en) * | 2019-04-23 | 2019-07-09 | 西南石油大学 | Based on the motor-driven double speed PDC drill bit of turbine generation formula |
| CN110029934A (en) * | 2019-04-23 | 2019-07-19 | 西南石油大学 | Double speed PDC drill bit based on screw drive |
| CN110029933A (en) * | 2019-04-23 | 2019-07-19 | 西南石油大学 | Based on turbo-driven double speed PDC drill bit |
| CN110242222A (en) * | 2019-07-18 | 2019-09-17 | 西南石油大学 | A kind of novel straight well anti-oblique drill bit under the device suitable for well dynamic |
| CN111058761A (en) * | 2019-12-31 | 2020-04-24 | 中国石油集团川庆钻探工程有限公司 | Manufacturing method of double-speed double-center drilling speed-increasing equipment |
| CN113846972A (en) * | 2021-10-26 | 2021-12-28 | 国能神东煤炭集团有限责任公司 | Hole expanding device and hole expanding method |
| CN111021946B (en) * | 2019-12-31 | 2022-03-18 | 中国石油集团川庆钻探工程有限公司 | Well drilling speed-increasing process for changing bottom hole confining pressure distribution by middle energy accumulation |
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| EP2339109A2 (en) * | 2009-12-23 | 2011-06-29 | Lövab Aktiebolag | Earth drilling tool and method |
| US20110240373A1 (en) * | 2010-04-01 | 2011-10-06 | Center Rock, Inc. | Down-the-hole drill hammer having an extendable drill bit assembly |
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| CN1101096A (en) * | 1993-09-28 | 1995-04-05 | 基德科资源有限公司 | Drilling short radius curvature well bores |
| CN2418247Y (en) * | 2000-02-13 | 2001-02-07 | 剪树旭 | Synchronous reamer |
| CN1617973A (en) * | 2001-07-16 | 2005-05-18 | 国际壳牌研究有限公司 | Steerable rotary drill bit assembly with pilot bit |
| CN101784745A (en) * | 2007-08-15 | 2010-07-21 | 普拉德研究及开发股份有限公司 | Motor bit system |
| CN201106404Y (en) * | 2007-10-10 | 2008-08-27 | 中国石油天然气集团公司 | Reaming machine special for casing tube welldrilling |
| KR20110028147A (en) * | 2009-09-11 | 2011-03-17 | 홍익컨스텍(주) | The precision boring auger bit for drilling in the earth and the method thereof |
| EP2339109A2 (en) * | 2009-12-23 | 2011-06-29 | Lövab Aktiebolag | Earth drilling tool and method |
| US20110240373A1 (en) * | 2010-04-01 | 2011-10-06 | Center Rock, Inc. | Down-the-hole drill hammer having an extendable drill bit assembly |
| CN201778658U (en) * | 2010-08-05 | 2011-03-30 | 中国石油天然气集团公司 | Reaming-while-drilling device used for casing drilling |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563860A (en) * | 2013-10-27 | 2015-04-29 | 中国石油化工集团公司 | Double-stage double-rotating-speed well drilling device |
| CN106639865A (en) * | 2015-10-30 | 2017-05-10 | 中石化石油工程技术服务有限公司 | Graded cutting device |
| CN105443041A (en) * | 2015-11-17 | 2016-03-30 | 中国石油大学(华东) | Differential pressure type drill |
| CN105443041B (en) * | 2015-11-17 | 2018-08-10 | 中国石油大学(华东) | Differential pressure type drill bit |
| CN106930689A (en) * | 2015-12-29 | 2017-07-07 | 中石化石油工程技术服务有限公司 | Friction speed Split type drill driver |
| CN106930686A (en) * | 2015-12-29 | 2017-07-07 | 中石化石油工程技术服务有限公司 | Eccentric double rank broken rock devices |
| CN107386961A (en) * | 2017-08-04 | 2017-11-24 | 四川深远石油钻井工具股份有限公司 | A kind of drilling speed device |
| CN107386960A (en) * | 2017-08-04 | 2017-11-24 | 四川深远石油钻井工具股份有限公司 | A kind of drilling speed device with composite drill bit |
| CN107386961B (en) * | 2017-08-04 | 2023-08-11 | 四川深远石油钻井工具股份有限公司 | Drilling speed increasing device |
| CN108487864B (en) * | 2018-03-19 | 2019-11-05 | 中煤科工集团西安研究院有限公司 | The double dynamical major diameter staged borehole-enlarging drilling tool of underground coal mine rock stratum directional hole and method |
| CN108487864A (en) * | 2018-03-19 | 2018-09-04 | 中煤科工集团西安研究院有限公司 | The double dynamical major diameter staged borehole-enlarging drilling tool of underground coal mine rock stratum directional hole and method |
| CN109989707A (en) * | 2019-04-23 | 2019-07-09 | 西南石油大学 | Based on the motor-driven double speed PDC drill bit of turbine generation formula |
| CN110029933A (en) * | 2019-04-23 | 2019-07-19 | 西南石油大学 | Based on turbo-driven double speed PDC drill bit |
| CN110029934A (en) * | 2019-04-23 | 2019-07-19 | 西南石油大学 | Double speed PDC drill bit based on screw drive |
| CN109915028B (en) * | 2019-04-23 | 2021-06-25 | 西南石油大学 | Battery type motor driven double speed PDC drill bit |
| CN109915028A (en) * | 2019-04-23 | 2019-06-21 | 西南石油大学 | The motor-driven double speed PDC drill bit of battery type |
| CN110242222A (en) * | 2019-07-18 | 2019-09-17 | 西南石油大学 | A kind of novel straight well anti-oblique drill bit under the device suitable for well dynamic |
| CN111058761A (en) * | 2019-12-31 | 2020-04-24 | 中国石油集团川庆钻探工程有限公司 | Manufacturing method of double-speed double-center drilling speed-increasing equipment |
| CN111021946B (en) * | 2019-12-31 | 2022-03-18 | 中国石油集团川庆钻探工程有限公司 | Well drilling speed-increasing process for changing bottom hole confining pressure distribution by middle energy accumulation |
| CN113846972A (en) * | 2021-10-26 | 2021-12-28 | 国能神东煤炭集团有限责任公司 | Hole expanding device and hole expanding method |
| CN113846972B (en) * | 2021-10-26 | 2023-08-11 | 国能神东煤炭集团有限责任公司 | Reaming device and reaming method |
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Application publication date: 20120711 |