CN102383735B - Ultrahigh-pressure drillbit runner system for underground booster and construction method thereof - Google Patents
Ultrahigh-pressure drillbit runner system for underground booster and construction method thereof Download PDFInfo
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- CN102383735B CN102383735B CN 201110171384 CN201110171384A CN102383735B CN 102383735 B CN102383735 B CN 102383735B CN 201110171384 CN201110171384 CN 201110171384 CN 201110171384 A CN201110171384 A CN 201110171384A CN 102383735 B CN102383735 B CN 102383735B
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Abstract
The invention relates to an ultrahigh-pressure drillbit runner system for an underground booster in the field of petroleum and natural gas drilling engineering and a construction method thereof. The ultrahigh-pressure drillbit runner system provided by the invention consists of an ultrahigh-pressure drilling fluid transport channel and a common drilling fluid transport channel, wherein the ultrahigh-pressure drilling fluid transport channel is formed by connecting an ultrahigh-pressure drilling fluid runner with an high-pressure hose, a high-pressure rigid tube and an ultrahigh-pressure drilling fluid nozzle into a whole; and the common drilling fluid transport channel forms a connected runner by an overflow hole of a centralizing overflow structure, an annular space between the ultrahigh-pressure drilling fluid runner and a conversion joint, an overflow hole of a split centralizer and an annular space between the ultrahigh-pressure drilling fluid runner and an inner cavity of a drillbit body. According to the invention, a common drillbit can be converted into an ultrahigh-pressure dual-runner drillbit simply by constructing the components except the drillbit in the system according to the construction method of the system, thereby being beneficial for popularizing and applying an underground boosting device.
Description
One, technical field:
The present invention relates to a kind of oil and gas drilling engineering field, particularly a kind of flow passage system of the superhigh pressure drill bit for underground booster and building method thereof.
Two, background technology:
Drilling engineering practice both at home and abroad shows, utilizes underground pressurizing device to improve part drilling fluid expulsion pressure and comes auxiliary rock can increase substantially the bit speed of deep formation.But the super-pressure drilling fluid that underground pressurizing device can be exported and normal pressure drilling fluid are transferred to respectively shaft bottom and make its each self-injection is one of key issue of this technology realization.
The super-pressure drilling fluid of in prior art, underground pressurizing device being exported and normal pressure drilling fluid are transferred to respectively shaft bottom and the existing following patent documentation of instrument of its injection are disclosed.
Chinese patent manual CN2584797 (on November 05th, 2003 is open) provides a kind of superhigh pressure drill bit with centralizer, it is to be connected a super high pressure bend between downhole pressure increasing pump discharge and bit nozzle, upper and lower two centralizers are housed on super high pressure bend, between two centralizers, spring are housed.Centralizer is installed and is formed up and down by clip spring seat, jump ring, pad, jump ring is the gap type ring spring, the first half of jump ring is that round table-like, the latter half is cylinder, centre is through hole, have three radial slots at Rotary-table and cylindrical top, on the wall thickness between two seams, open shaft orientation flowing channel; It is cylindric that clip spring seat is, and in the middle of it, is large mouthful of downward inner conical, uses screwed connection in inner walls.Be added with a protective sleeve at high-voltage tube revealed section and nozzle outside, protective sleeve is welded on bit body.
Chinese patent manual CN2665342 (on December 22nd, 2004 is open) has described a kind of drill bit--Double flow passage drilling bit be used in conjunction with the down-hole automatic pressure unit.By bit body, nozzle, super-pressure nozzle, super-pressure communicating pipe, mud runner, and the compositions such as the gear wheel of fractured rock or composite sheet.It is characterized in that: super-pressure communicating pipe is arranged in the mud runner, super-pressure communicating pipe lower end positioning sleeve is arranged.Positioning sleeve is fixed on bit body, and positioning sleeve is fixed on super-pressure communicating pipe in the mud runner.Super-pressure communicating pipe connects the super-pressure nozzle.Effect is owing in the mud runner at drill bit, being provided with super-pressure communicating pipe, and the superelevation mud that the down-hole automatic pressure unit produces can, by arriving super-pressure nozzle ejection super-pressure communicating pipe, form superhigh pressure jetting and flow broken bottom rock.Super-pressure communicating pipe outside be the mud runner, the mud that slush pump provides completes bottom hole flushing and taking on rock by mud runner and nozzle and returns.
Chinese patent manual CN2683822 (on 03 09th, 2005 open) provides a kind of super-high pressure double flow passage PDC drill head, this is to take ordinary steel body PDC drill bit as basis, in the situation that existing common flow passage and plain nozzle, a super high pressure bend is set in bit body inside, the port of export of the upper end connecting downhole booster pump of super high pressure bend, lower end is connected with the superhigh pressure drill bit nozzle by the super-pressure runner of processing in bit body, superhigh pressure drill bit is arranged on the back of PDC cutting teeth on the wing of drill bit, carry out the superhigh pressure water jet cutting rock, auxiliary cutting element breaks rock.Bit body top has erection device that super high pressure bend is fixed in Bit Cavity.Erection device, except can the righting super high pressure bend, also has shaft orientation flowing channel.Plain nozzle is interchangeable, and the super-pressure nozzle is contained in the overcoat the inside, also replaceable.
Chinese patent manual CN2931757 (on 08 08th, 2007 open) has described a kind of Double flow passage drilling bit drilled for oil, and relates to the drill bit drilled for oil.Its objective is as the hydraulic drilling specific drilling tool provides matching used drill bit and disclose a kind of Double flow passage drilling bit, the principal character of this scheme is also to be provided with the second mud tube in hydraulic fill pipeline, the bottom of the second mud tube connects the bottom that is placed in hydraulic fill pipeline, between the top of the second mud tube and hydraulic fill pipeline tube wall, is provided with support; Hydraulic fill pipeline bottom centre is provided with counterbore, and the second mud tube bottom is press-fit in counterbore, and the bottom of counterbore is shaped with nozzle; Support evenly arranges along the spaced radial of hydraulic fill pipeline.Press the Double flow passage drilling bit that this programme is implemented, have rational in infrastructure, succinct, connect characteristics reliable and easy to process, with low cost, not only for Application and Development hydraulic drilling technology, provide useful technical support, and by this programme success be applied to the PDC matrix drill bits, for oil drilling production provides a kind of rationally effective new drill.
In principle, these drill bits can be realized the purpose that the super-pressure drilling fluid of underground pressurizing device output and normal pressure drilling fluid is transferred to respectively to shaft bottom and makes its injection, but do not consider following problem in design: (1) needs to produce target drill, target drill need to be imbedded the special-purpose runner of super-pressure drilling fluid in bit matrix, the cost that this has increased drillng operation undoubtedly, affected underground pressurizing device in different regions, the applying of Different Strata; (2) there are two possibilities that runner can not connect simultaneously in installation process, due to super high pressure fluid overcurrent pipeline without pressure-bearing and bear device, with the underground pressurizing device cargo handling process in, can produce because axially loaded is excessive or axis misaligns the super-pressure runner that causes and is communicated with failure scenarios; (3) connection procedure may damage super-pressure runner and being connected of bit body, with on underground pressurizing device, link in termination process, above-mentioned several drill bit super-pressure runner does not prevent rotating mechanism, torsional interaction on the super-pressure runner, in the connecting portion with bit body, very easily causes the damage at this position.
Therefore need a kind of flow passage system of the superhigh pressure drill bit for underground booster badly, to meet, utilize underground pressurizing device to improve the requirement of this Technique Popularizing application of deep formation rate of penetration.
Three, summary of the invention:
Purpose of the present invention is exactly in view of the foregoing defects the prior art has, a kind of flow passage system of the superhigh pressure drill bit for underground booster and building method thereof are provided, only need other assemblies except bit body in system are constructed according to the building method of this system, can realize the conversion of common drill bit to the super-high pressure double flow passage drill bit, be conducive to applying of underground pressurizing device.
A kind of flow passage system of the superhigh pressure drill bit for underground booster, super-pressure drilling fluid transmission channel and common drilling fluid transmission channel, consist of, described super-pressure drilling fluid transmission channel connects into an integral body by super-pressure drilling fluid runner and high pressure resistant flexible pipe, high pressure resistant hard tube, super-pressure drilling fluid nozzle; Annular space between described common drilling fluid transmission channel is crossed flow structure flowing hole, super-pressure drilling fluid runner by righting and crossover sub endoporus, the flowing hole of opposite opened centralizer, super-pressure drilling fluid runner form and are communicated with runner with annular space between the bit body inner chamber.
Be provided with the drilling fluid runner in above-mentioned bit body, in a drilling fluid runner, high pressure resistant hard tube be installed therein, the hard tube stop collar is installed in the outside of high pressure resistant hard tube, refills super-pressure drilling fluid nozzle; The box of the outer end coupling adapter of described bit body, the endoporus of the pin end of crossover sub is installed righting and is crossed flow structure, with aperture stop nut, macropore stop nut, coordinate, axial tension and pressure that while being used for bearing underground pressurizing device and this system dismounting, seal assembly produces super-pressure drilling fluid runner, flow structure six side's endoporus hexahedron of packing into is crossed in righting, between hexahedron and super-pressure drilling fluid runner, has gap.
Above-mentioned aperture stop nut is arranged on described super-pressure drilling fluid runner, and its soffit is crossed the flow structure upper surface with righting and contacted, the axial compression that while being connected with this system for bearing underground pressurizing device, seal assembly produces super-pressure drilling fluid runner.
Above-mentioned macropore stop nut is arranged on super-pressure drilling fluid runner, and its upper surface is crossed the flow structure soffit with righting and contacted, for bearing underground pressurizing device and this system axial tension that seal assembly produces super-pressure drilling fluid runner while taking apart.
The opposite opened centralizer is equipped with in above-mentioned crossover sub and bit body junction, for realizing the overcurrent that reaches the normal pressure drilling fluid placed in the middle of super-pressure drilling fluid runner.
Above-mentioned super-pressure drilling fluid nozzle is arranged on bit body by screw thread, realizes the injection of super-pressure drilling fluid, between its inner surface and high pressure resistant hard tube external surface, "O"-ring is housed, and realizes sealing.
Above-mentioned bit body can be rock bit or PDC drill bit.
A kind of building method of the flow passage system of the superhigh pressure drill bit for underground booster comprises the following steps:
1. super-pressure drilling fluid runner, high pressure resistant flexible pipe, high pressure resistant hard tube are connected as a single entity, the macropore stop nut is arranged on super-pressure drilling fluid runner;
2. by the 1. high pressure resistant hard tube of the assembly bit body drilling fluid runner of packing into of step, the hard tube stop collar is installed in the outside of high pressure resistant hard tube, refills super-pressure drilling fluid nozzle;
3. righting is crossed to flow structure and be contained in the crossover sub pin end, and the mounting limit back-up ring prevents righting overcurrent structure movement;
4. the opposite opened centralizer is held tightly on super-pressure drilling fluid runner, loaded onto crossover sub, guarantee in installation process that super-pressure drilling fluid runner top crosses the flow structure mesopore from righting and pass;
5. the space between flow structure six side's endoporus and super-pressure drilling fluid runner is crossed in the righting of hexahedron being packed into;
6. the aperture stop nut is spun on super-pressure drilling fluid runner.
Beneficial effect of the present invention is as follows:
1, applied widely, a kind of bit body of the flow passage system of the superhigh pressure drill bit for underground booster is common any drill bit, only need other assemblies except bit body in system are constructed according to the building method of this system, can realize the conversion of common drill bit to the super-high pressure double flow passage drill bit, be conducive to applying of underground pressurizing device;
2, two possibilities that runner can not connect simultaneously in the installation process have been eliminated, it is excessive and cause that super-pressure drilling fluid runner slides to the possibility of drill bit bottom that axially loaded has been eliminated in the existence of little stop nut, and hexahedron and righting are crossed space between flow structure six side's endoporus and super-pressure drilling fluid runner and provided space for underground pressurizing device and this system super-pressure drilling fluid runner axis centering;
3, connection procedure can not damage the connecting portion of super-pressure runner and bit body, and hexahedron is spent coordinating of flow structure six side's endoporus and super-pressure drilling fluid runner with righting and born the moment of torsion on the super-pressure runner in crossover sub and underground pressurizing device connection procedure;
4, simple in structure, stable performance, use procedure can not bring otherwise risk for drillng operation.
Four, accompanying drawing explanation:
Accompanying drawing 1 is sectional view of the present invention;
Accompanying drawing 2 is A-A sectional views of the present invention;
Accompanying drawing 3 is B-B sectional views of the present invention;
Accompanying drawing 4 is the schematic diagrames after super-pressure nozzle arrangements of the present invention amplifies;
In upper figure: flow structure 6, crossover sub 7, opposite opened centralizer 8, bit body 9, high pressure resistant flexible pipe 10, high pressure resistant hard tube 11, hard tube stop collar 12, super-pressure drilling fluid nozzle 13 are crossed in super-pressure drilling fluid runner 1, aperture stop nut 2, spacing back-up ring 3, hexahedron 4, macropore stop nut 5, righting.
Five, the specific embodiment:
1-4 by reference to the accompanying drawings, the invention will be further described:
A kind of flow passage system of the superhigh pressure drill bit for underground booster, super-pressure drilling fluid transmission channel and common drilling fluid transmission channel, consist of, described super-pressure drilling fluid transmission channel connects into an integral body by super-pressure drilling fluid runner 1 and high pressure resistant flexible pipe 10, high pressure resistant hard tube 11, super-pressure drilling fluid nozzle 13; Annular space between described common drilling fluid transmission channel is crossed flow structure 6 flowing hole, super-pressure drilling fluid runner 1 by righting and crossover sub 7 endoporus, the flowing hole of opposite opened centralizer 8, super-pressure drilling fluid runner 1 form and are communicated with runner with annular space between bit body 9 inner chambers.
Operating principle of the present invention is: super-pressure drilling fluid runner 1 connects into an integral body with high pressure resistant flexible pipe 10, high pressure resistant hard tube 11, super-pressure drilling fluid nozzle 13, this integral body is transferred to shaft bottom and sprays for the super-pressure drilling fluid that underground pressurizing device is produced, and realizes the super-pressure drilling fluid directly or auxiliary rock; Annular space between the flowing hole, super-pressure drilling fluid runner 1 that flow structure 6 is crossed in righting and crossover sub 7 endoporus, the flowing hole of opposite opened centralizer 8, super-pressure drilling fluid runner 1 and annular space between bit body 9 inner chambers are one to be communicated with the transmission of runner for common drilling fluid, the normal pressure drilling fluid arrived on bit body 9 ejects by plain nozzle on bit body, realizes the normal function of drilling fluid.
Be provided with the drilling fluid runner in above-mentioned bit body 9, in a drilling fluid runner, high pressure resistant hard tube 11 be installed therein, hard tube stop collar 12 is installed in the outside of high pressure resistant hard tube 11, refills super-pressure drilling fluid nozzle 13; The box of the outer end coupling adapter 7 of described bit body 9, the endoporus of the pin end of crossover sub 7 is installed righting and is crossed flow structure 6, with aperture stop nut 2, macropore stop nut 5, coordinate, axial tension and pressure that while being used for bearing underground pressurizing device and this system dismounting, seal assembly produces super-pressure drilling fluid runner 1, flow structure 6 six side's endoporus hexahedron 4 of packing into is crossed in righting, between hexahedron 4 and super-pressure drilling fluid runner 1, has gap.
Righting is crossed flow structure 6 and is installed in the endoporus of crossover sub 7 pin ends by left-handed button screw thread, coordinate seal assembly produces super-pressure drilling fluid runner 1 when bearing underground pressurizing device and this system dismounting axial tension and pressure with aperture stop nut 2, macropore stop nut 5;
Aperture stop nut 2 is arranged on super-pressure drilling fluid runner 1, and its soffit is crossed flow structure 6 upper surfaces with righting and contacted, the axial compression that while being connected with this system for bearing underground pressurizing device, seal assembly produces super-pressure drilling fluid runner 1;
Macropore stop nut 5 is arranged on super-pressure drilling fluid runner 1, and its upper surface is crossed flow structure 6 soffits with righting and contacted, for bearing underground pressurizing device and this system axial tension that seal assembly produces super-pressure drilling fluid runner 1 while taking apart;
Hexahedron 4 is installed on righting and crosses the space between flow structure 6 six side's endoporus and super-pressure drilling fluid runner 1, circumferential moment of torsion super-pressure drilling fluid runner 1 produced for bearing underground pressurizing device and this system cargo handling process seal assembly;
Righting is crossed flow structure 6 tops spacing back-up ring 3 is installed, and for fixing righting, crosses flow structure 6, can bear torsional interaction and not produce rotation;
The space that respectively has 0.5mm between flow structure 6 six side's endoporus and super-pressure drilling fluid runner 1 six square sections is crossed in hexahedron 4 and righting, for underground pressurizing device and this system super-pressure drilling fluid runner axis centering provide space;
Hard tube stop collar 12 is installed on the neck of high pressure resistant hard tube 11, for fixing high pressure resistant hard tube 11;
Super-pressure drilling fluid nozzle 13 utilizes screw thread to be arranged on bit body 9, realizes the injection of super-pressure drilling fluid, between its inner surface and high pressure resistant hard tube 11 external surfaces, "O"-ring is housed, and realizes sealing;
The flowing hole that flow structure 6 and opposite opened centralizer 8 are crossed in righting is not limited to the structure in Fig. 2, Fig. 3, can be circular hole etc.;
In addition, the present invention can be rock bit, PDC drill bit etc. for the bit body 9 of constructing this system, and its size and profile are not subject to the restriction of shape in accompanying drawing.
In order to construct said system, the building method that the present invention takes is: 1. super-pressure drilling fluid runner 1, high pressure resistant flexible pipe 10, high pressure resistant hard tube 11 are connected as a single entity, macropore stop nut 5 is arranged on super-pressure drilling fluid runner 1; 2. the bit body 9 drilling fluid runners of the high pressure resistant hard tube 11 of step 1 assembly being packed into, hard tube stop collar 12 is installed in the outside of high pressure resistant hard tube 11, refills super-pressure drilling fluid nozzle 13; 3. righting is crossed to flow structure 6 and be contained in crossover sub 7 pin ends, and mounting limit back-up ring 3 prevents that righting from crossing flow structure 6 activities; 4. opposite opened centralizer 8 is held tightly on super-pressure drilling fluid runner 1, loaded onto crossover sub 7, guarantee in installation process that super-pressure drilling fluid runner 1 top crosses flow structure 6 mesopores from righting and pass; 5. the space between flow structure 6 six side's endoporus and super-pressure drilling fluid runner 1 is crossed in the righting of hexahedron 4 being packed into; 6. aperture stop nut 2 is spun on super-pressure drilling fluid runner 1.
Claims (7)
1. the flow passage system of the superhigh pressure drill bit for underground booster, it is characterized in that: super-pressure drilling fluid transmission channel and common drilling fluid transmission channel, consist of, described super-pressure drilling fluid transmission channel connects into an integral body by super-pressure drilling fluid runner (1) and high pressure resistant flexible pipe (10), high pressure resistant hard tube (11), super-pressure drilling fluid nozzle (13); Annular space between described common drilling fluid transmission channel is crossed flow structure (6) flowing hole, super-pressure drilling fluid runner (1) by righting and crossover sub (7) endoporus, the flowing hole of opposite opened centralizer (8), super-pressure drilling fluid runner (1) form and are communicated with runner with annular space between bit body (9) inner chamber;
Described bit body is provided with the drilling fluid runner in (9), in a drilling fluid runner, high pressure resistant hard tube (11) is installed therein, and hard tube stop collar (12) is installed in the outside of high pressure resistant hard tube (11), refills super-pressure drilling fluid nozzle (13); The box of the outer end coupling adapter (7) of described bit body (9), the endoporus of the pin end of crossover sub (7) is installed righting and is crossed flow structure (6), with aperture stop nut (2), macropore stop nut (5), coordinate, axial tension and pressure that while being used for bearing underground pressurizing device and this system dismounting, seal assembly produces super-pressure drilling fluid runner (1), flow structure (6) six side's endoporus hexahedron (4) of packing into is crossed in righting, between hexahedron (4) and super-pressure drilling fluid runner (1), has gap.
2. the flow passage system of the superhigh pressure drill bit for underground booster according to claim 1, it is characterized in that: described aperture stop nut (2) is arranged on described super-pressure drilling fluid runner (1), its soffit is crossed flow structure (6) upper surface with righting and is contacted, the axial compression that while being connected with this system for bearing underground pressurizing device, seal assembly produces super-pressure drilling fluid runner (1).
3. the flow passage system of the superhigh pressure drill bit for underground booster according to claim 1, it is characterized in that: described macropore stop nut (5) is arranged on super-pressure drilling fluid runner (1), its upper surface is crossed flow structure (6) soffit with righting and is contacted, for bearing underground pressurizing device and this system axial tension that seal assembly produces super-pressure drilling fluid runner (1) while taking apart.
4. the flow passage system of the superhigh pressure drill bit for underground booster according to claim 1, it is characterized in that: described crossover sub (7) is equipped with opposite opened centralizer (8) with bit body (9) junction, for realizing the overcurrent that reaches the normal pressure drilling fluid placed in the middle of super-pressure drilling fluid runner (1).
5. the flow passage system of the superhigh pressure drill bit for underground booster according to claim 1, it is characterized in that: described super-pressure drilling fluid nozzle (13) is arranged on bit body (9) by screw thread, realize the injection of super-pressure drilling fluid, between its inner surface and high pressure resistant hard tube (11) external surface, "O"-ring is housed, realizes sealing.
6. the flow passage system of the superhigh pressure drill bit for underground booster according to claim 1, it is characterized in that: described bit body (9) can be rock bit or PDC drill bit.
7. the building method of the flow passage system of the superhigh pressure drill bit for underground booster is characterized in that comprising the following steps:
1. super-pressure drilling fluid runner (1), high pressure resistant flexible pipe (10), high pressure resistant hard tube (11) are connected as a single entity, macropore stop nut (5) is arranged on super-pressure drilling fluid runner (1);
2. by the 1. high pressure resistant hard tube (11) of assembly bit body (9) the drilling fluid runner of packing into of step, hard tube stop collar (12) is installed in the outside of high pressure resistant hard tube (11), refills super-pressure drilling fluid nozzle (13);
3. righting is crossed to flow structure (6) and be contained in crossover sub (7) pin end, and mounting limit back-up ring (3) prevents that righting from crossing flow structure (6) activity;
4. opposite opened centralizer (8) is held tightly at super-pressure drilling fluid runner (1) above, loaded onto crossover sub (7), guarantee in installation process that super-pressure drilling fluid runner (1) top crosses flow structure (6) mesopore from righting and pass;
5. the space between flow structure (6) six side's endoporus and super-pressure drilling fluid runner (1) is crossed in the righting of hexahedron (4) being packed into;
6. aperture stop nut (2) is spun on super-pressure drilling fluid runner (1).
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110171384 CN102383735B (en) | 2011-06-23 | 2011-06-23 | Ultrahigh-pressure drillbit runner system for underground booster and construction method thereof |
| CA2816465A CA2816465C (en) | 2011-04-21 | 2012-03-16 | Method and system for improving drilling speed by using drill string vibration |
| PCT/CN2012/072450 WO2012142891A1 (en) | 2011-04-21 | 2012-03-16 | Method and system for improving drilling speed by using drill string vibration |
| US13/882,982 US9540881B2 (en) | 2011-04-21 | 2012-03-16 | Method and system for improving drilling speed by using drill speed vibration |
| RU2013127769/03A RU2550628C2 (en) | 2011-04-21 | 2012-03-16 | Method and system for drilling acceleration by use of drill string vibration |
| EP12774000.9A EP2623707B1 (en) | 2011-04-21 | 2012-03-16 | Method and system for improving drilling speed by using drill string vibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110171384 CN102383735B (en) | 2011-06-23 | 2011-06-23 | Ultrahigh-pressure drillbit runner system for underground booster and construction method thereof |
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| Publication Number | Publication Date |
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| CN102383735A CN102383735A (en) | 2012-03-21 |
| CN102383735B true CN102383735B (en) | 2013-12-25 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102704857B (en) * | 2012-06-21 | 2014-06-11 | 中国石油大学(华东) | Underground supercharging and accelerating system |
| CN103850651B (en) * | 2014-03-27 | 2015-01-07 | 北京金工万邦石油技术开发有限公司 | Hydrocyclone leading device |
| CN106437516B (en) * | 2016-11-14 | 2018-07-10 | 郑州神利达钻采设备有限公司 | Method of work of the hydrodynamic force without the anti-bias tilt rig of drilling rod and its supporting telescopic device |
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|---|---|---|---|---|
| CN2584797Y (en) * | 2002-11-19 | 2003-11-05 | 石油大学(华东) | Superhigh pressure drill bit with centering guide |
| CN2665342Y (en) * | 2003-10-30 | 2004-12-22 | 杨文魁 | Double flow passage drilling bit |
| CN2683822Y (en) * | 2004-02-25 | 2005-03-09 | 石油大学(华东) | Super-high pressure double flow passage PDC drill head |
| CN2931757Y (en) * | 2006-07-11 | 2007-08-08 | 成都百施特金刚石钻头有限公司 | Double dual-flow channel drill bit for exploratory boring bergol |
| JP3151449U (en) * | 2009-03-21 | 2009-06-25 | 株式会社ユアーズ | Rotary press-fit tip steel pipe for underground excavation equipped with high pressure water injection nozzle |
-
2011
- 2011-06-23 CN CN 201110171384 patent/CN102383735B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2584797Y (en) * | 2002-11-19 | 2003-11-05 | 石油大学(华东) | Superhigh pressure drill bit with centering guide |
| CN2665342Y (en) * | 2003-10-30 | 2004-12-22 | 杨文魁 | Double flow passage drilling bit |
| CN2683822Y (en) * | 2004-02-25 | 2005-03-09 | 石油大学(华东) | Super-high pressure double flow passage PDC drill head |
| CN2931757Y (en) * | 2006-07-11 | 2007-08-08 | 成都百施特金刚石钻头有限公司 | Double dual-flow channel drill bit for exploratory boring bergol |
| JP3151449U (en) * | 2009-03-21 | 2009-06-25 | 株式会社ユアーズ | Rotary press-fit tip steel pipe for underground excavation equipped with high pressure water injection nozzle |
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Effective date of registration: 20170612 Address after: Zhenmo Wan Zhuang 065007 Langfang city in Hebei province Guangyang District of the village east oil base first tube branch hospital Patentee after: LANGFANG DINGXIN LIANTUO INDUSTRY TRADE CO., LTD. Address before: 257061 North Dongying Road, Dongying, Shandong, No. two, No. 271 Patentee before: China Petroleum University (East China) |