CN103277051A - Self-excitation type pulse polycrystalline diamond compact (PDC) drill bit - Google Patents
Self-excitation type pulse polycrystalline diamond compact (PDC) drill bit Download PDFInfo
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- CN103277051A CN103277051A CN2013102435465A CN201310243546A CN103277051A CN 103277051 A CN103277051 A CN 103277051A CN 2013102435465 A CN2013102435465 A CN 2013102435465A CN 201310243546 A CN201310243546 A CN 201310243546A CN 103277051 A CN103277051 A CN 103277051A
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Abstract
A self-excitation type pulse polycrystalline diamond compact (PDC) drill bit comprises a drill bit upper body at the upper portion, wherein an inner spray nozzle is installed inside a drill bit body, a drill bit blade is fixed outside the drill bit body, a diamond compact is inlayed on the drill bit blade, a central hole is formed on the axis of the drill bit upper body, and the diameter of the central hole is 55-80mm. A contracting taper hole is formed at the lower end of the central hole, the inner spray nozzle is arranged at the lower end of the contracting taper hole, the lower end of the inner spray nozzle is a self-excitation pulse cavity in the drill bit body, and the lower portion of the self-excitation pulse cavity is communicated with 4-6 spray nozzles. A rotating wheel can be further installed in the self-excitation pulse cavity at the lower portion of the inner spray nozzle inside the drill bit body, and liquid in a drill rod forms self-excitation pulse in the self-excitation pulse cavity and then is sprayed out through the spray nozzles at the lower portion to produce pulse oscillation, so that water pressure at the bottom of the drill bit is varying, the hydraulic rock breaking capacity of the drill bit at the bottom of a well is improved, meanwhile excessive breaking of rocks at the bottom of the well is also avoided, and the impact effect is more than two times of the effect of common steady pressure jet flows.
Description
Technical field
The present invention relates to a kind of digging tool in the oil drilling drilling process, it is a kind of auto-excitation type pulse PDC drill bit, this drill bit converts the common jet of drilling fluid pump output to the self-excited pulse jet, and jet amplified, with the form output of impulse hunting, shaft bottom drill bit hydraulic drilling ability is multiplied.Realized the high efficiency transmission of drilling fluid energy.
Background technology
Extensively adopting common jet PDC drill bit at present all is the flushing of carrying out the shaft bottom with constant hydraulic pressure, and weak point is that the efficient of water is low, drilling depth is few, speed is slow, has the situation of overcrushing, and drilling life of bit is short.
Summary of the invention
In order to overcome the above-mentioned shortcoming that constant hydraulic pressure carries out the flushing in shaft bottom, the present invention is applied to the self-excited pulse jet current principle on the drill bit, produce the high-voltage pulse jet by the self-excited pulse chamber, through the direct hydraulic drilling of bit nozzle, propose a kind of new design of auto-excitation type pulse PDC drill bit.
This auto-excitation type pulse PDC drill bit, the drill bit upper body that comprises top, the drill bit upper body links to each other with drill body by screw thread, drill body inside is equipped with inner nozzle, drill body external stability has the drill bit wing, is inlaid with diamond compact on the drill bit wing, it is characterized in that, one centre bore is arranged on the body axis on the drill bit, and the diameter of centre bore is the 55-80 millimeter; The lower end of centre bore has one to shrink taper hole, shrinking the taper hole lower end has an inner nozzle, and the inner nozzle lower end is the self-excited pulse chamber in the drill body, and bottom, self-excited pulse chamber is cylindrical, top, self-excited pulse chamber is the interior domatic basin shape on inclined-plane that is, bottom, a self-excited pulse chamber and 4-6 nozzle communicates.
Centered by the aperture of inner nozzle the 0.4-0.8 in aperture, hole doubly, centered by the diameter in self-excited pulse chamber the 1.3-2.5 in aperture, hole doubly, the 1.1-1.3 in inner nozzle aperture, hole to the distance from bottom in self-excited pulse chamber is doubly.
In the self-excited pulse chamber, inner nozzle bottom of drill body inside a runner can also be installed, 2-6 blade arranged on the runner, the axis of the runner shaft of level and vertical centre bore is non-intersect, centered by the distance of both axis 1/10 of the aperture, hole.
Liquid in the drilling rod flows into the bit central hole from drill collar and flows into the contraction taper hole again, spray at a high speed from inner nozzle, be subjected to the effect of the cylindrical and top basin shape of self-excited pulse chamber large space, current slow down, in the self-excited pulse chamber, form self-excited pulse, nozzle by the bottom sprays again, produce pulse oscillating, little when big when making the hydraulic pressure of drill bit bottom, increase shaft bottom drill bit hydraulic drilling ability, also avoided simultaneously the overcrushing of borehole bottom rock, the jet impulse effect is more than 2 times of common steady pressure jet.Realized the high efficiency transmission of drilling fluid energy.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention one
Fig. 2 is the structural representation of the embodiment of the invention two
Among the figure: 1, drill bit upper body, 2, drill body, 3, nozzle, 4, the drill bit wing, 5, centre bore, 6, shrink taper hole, 7, inner nozzle, 8, the self-excited pulse chamber, 9, runner.
The specific embodiment
Embodiment one: in Fig. 1, this auto-excitation type pulse PDC drill bit, the drill bit upper body 1 that comprises top, drill bit upper body 1 links to each other with drill body 2 by screw thread, drill body 2 inside are equipped with inner nozzle 7, and drill body 2 external stabilities have drill bit wing 4, are inlaid with diamond compact on the drill bit wing 4, one centre bore 5 is arranged on 1 axis of drill bit upper body, and the diameter of centre bore 5 is 70 millimeters; The lower end of centre bore 5 has one to shrink taper hole 6, shrink taper hole 6 lower ends one inner nozzle 7 is arranged, inner nozzle 7 lower ends are the self-excited pulse chamber 8 in the drill body, 8 bottoms, self-excited pulse chamber are cylindrical, 8 tops, self-excited pulse chamber are the interior domatic basin shape on inclined-plane that is, 8 bottoms, self-excited pulse chamber and 4 nozzles 3 communicate.
Centered by the aperture of inner nozzle 7 0.5 times of 5 apertures, hole, centered by the diameter in self-excited pulse chamber 82 times of 5 apertures, hole, inner nozzle 7 1.2 times of 5 apertures, hole to the distance from bottom in self-excited pulse chamber 8.
Embodiment two: in Fig. 2, in the self-excited pulse chamber, inner nozzle bottom of drill body inside, a runner 9 is installed also, 4 blades are arranged on the runner, and the axis of the runner axis of level and vertical centre bore is non-intersect, centered by the distance of both axis 1/10 of the aperture, hole.Because runner 9 high-speed rotation, the variation of the pressure high frequency of current in self-excited pulse chamber 8 is greatly improved the impact effect of current.
Claims (3)
1. auto-excitation type pulse PDC drill bit, the drill bit upper body that comprises top, the drill bit upper body links to each other with drill body by screw thread, drill body inside is equipped with inner nozzle, drill body external stability has the drill bit wing, is inlaid with diamond compact on the drill bit wing, it is characterized in that, one centre bore is arranged on the body axis on the drill bit, and the diameter of centre bore is the 55-80 millimeter; The lower end of centre bore has one to shrink taper hole, shrinking the taper hole lower end has an inner nozzle, and the inner nozzle lower end is the self-excited pulse chamber in the drill body, and bottom, self-excited pulse chamber is cylindrical, top, self-excited pulse chamber is the interior domatic basin shape on inclined-plane that is, bottom, a self-excited pulse chamber and 4-6 nozzle communicates.
2. auto-excitation type pulse PDC drill bit according to claim 1, it is characterized in that, centered by the aperture of inner nozzle the 0.4-0.8 in aperture, hole doubly, centered by the diameter in self-excited pulse chamber the 1.3-2.5 in aperture, hole doubly, the 1.1-1.3 in inner nozzle aperture, hole to the distance from bottom in self-excited pulse chamber is doubly.
3. auto-excitation type pulse PDC drill bit according to claim 1, it is characterized in that, in the self-excited pulse chamber, inner nozzle bottom of drill body inside, a runner is installed, 2-6 blade arranged on the runner, the axis of the runner shaft of level and vertical centre bore is non-intersect, centered by the distance of both axis 1/10 of the aperture, hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310243546.5A CN103277051B (en) | 2013-06-19 | 2013-06-19 | Self-excitation type pulse polycrystalline diamond compact (PDC) drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310243546.5A CN103277051B (en) | 2013-06-19 | 2013-06-19 | Self-excitation type pulse polycrystalline diamond compact (PDC) drill bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103277051A true CN103277051A (en) | 2013-09-04 |
| CN103277051B CN103277051B (en) | 2015-04-01 |
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| CN201310243546.5A Active CN103277051B (en) | 2013-06-19 | 2013-06-19 | Self-excitation type pulse polycrystalline diamond compact (PDC) drill bit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763349A (en) * | 2015-03-16 | 2015-07-08 | 中国石油化工股份有限公司 | Reinforced pulse polycrystalline diamond compact bit for well drilling |
| CN104832106A (en) * | 2015-03-16 | 2015-08-12 | 中国石油化工股份有限公司 | Improved pulse PDC bit for well drilling |
| CN108612480A (en) * | 2018-06-29 | 2018-10-02 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | A kind of vortex pulse shock drill bit |
| CN115788307A (en) * | 2023-02-13 | 2023-03-14 | 中国石油大学(华东) | Drilling tool with coupled two-stage drill bit and vibration impact and high-pressure pulse jet |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1061638A (en) * | 1991-10-30 | 1992-06-03 | 江汉石油管理局钻头厂 | A kind of nozzle that is used for rock bit |
| WO1997031174A1 (en) * | 1996-02-20 | 1997-08-28 | Ccore Technology & Licensing Limited | Axial-vortex jet drilling system and method |
| CN200989162Y (en) * | 2006-07-12 | 2007-12-12 | 中国石油大学(北京) | Hydraulic pulse cavitation jet-flow well drilling device and drill bit |
| CN101353947A (en) * | 2008-06-20 | 2009-01-28 | 江苏工业学院 | Full radial protection PDC bit |
| CN201826757U (en) * | 2010-10-29 | 2011-05-11 | 中国石油集团川庆钻探工程有限公司 | Surface layer polycrystalline diamond compact bit suitable for stratum drilling containing arhat holes |
| CN102133562B (en) * | 2011-01-28 | 2012-09-26 | 重庆大学 | Multifunctional self-excited oscillation abrasive water jet generating device |
| CN202667034U (en) * | 2012-06-29 | 2013-01-16 | 宋节行 | Firmly combined multi-self-excited supercharged fluid nozzle |
| CN203296702U (en) * | 2013-06-20 | 2013-11-20 | 天津市仕杰达能源技术开发有限公司 | Self-excited pulse PDC (polycrystalline diamond compact) drill bit |
-
2013
- 2013-06-19 CN CN201310243546.5A patent/CN103277051B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1061638A (en) * | 1991-10-30 | 1992-06-03 | 江汉石油管理局钻头厂 | A kind of nozzle that is used for rock bit |
| WO1997031174A1 (en) * | 1996-02-20 | 1997-08-28 | Ccore Technology & Licensing Limited | Axial-vortex jet drilling system and method |
| CN200989162Y (en) * | 2006-07-12 | 2007-12-12 | 中国石油大学(北京) | Hydraulic pulse cavitation jet-flow well drilling device and drill bit |
| CN101353947A (en) * | 2008-06-20 | 2009-01-28 | 江苏工业学院 | Full radial protection PDC bit |
| CN201826757U (en) * | 2010-10-29 | 2011-05-11 | 中国石油集团川庆钻探工程有限公司 | Surface layer polycrystalline diamond compact bit suitable for stratum drilling containing arhat holes |
| CN102133562B (en) * | 2011-01-28 | 2012-09-26 | 重庆大学 | Multifunctional self-excited oscillation abrasive water jet generating device |
| CN202667034U (en) * | 2012-06-29 | 2013-01-16 | 宋节行 | Firmly combined multi-self-excited supercharged fluid nozzle |
| CN203296702U (en) * | 2013-06-20 | 2013-11-20 | 天津市仕杰达能源技术开发有限公司 | Self-excited pulse PDC (polycrystalline diamond compact) drill bit |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763349A (en) * | 2015-03-16 | 2015-07-08 | 中国石油化工股份有限公司 | Reinforced pulse polycrystalline diamond compact bit for well drilling |
| CN104832106A (en) * | 2015-03-16 | 2015-08-12 | 中国石油化工股份有限公司 | Improved pulse PDC bit for well drilling |
| CN108612480A (en) * | 2018-06-29 | 2018-10-02 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | A kind of vortex pulse shock drill bit |
| CN115788307A (en) * | 2023-02-13 | 2023-03-14 | 中国石油大学(华东) | Drilling tool with coupled two-stage drill bit and vibration impact and high-pressure pulse jet |
| CN115788307B (en) * | 2023-02-13 | 2023-06-13 | 中国石油大学(华东) | Drilling tool with double-stage drill bit coupled with vibration impact and high-pressure pulse jet flow |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103277051B (en) | 2015-04-01 |
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Effective date of registration: 20191012 Address after: 300280 Tianjin Binhai New Area (Dagang) Beach Street, two North Road, No. 17 Patentee after: TIANJIN BANGPU PETROLEUM TECHNOLOGY EQUIPMENT CO., LTD. Address before: 300280, Tianjin Binhai New Area Dagang Road North District building, two floor Patentee before: Tianjin Shijieda Energy Technology Development Co., Ltd. |
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