CN102733756B - Vibration and pressure well drilling tool - Google Patents
Vibration and pressure well drilling tool Download PDFInfo
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- CN102733756B CN102733756B CN201210256105.4A CN201210256105A CN102733756B CN 102733756 B CN102733756 B CN 102733756B CN 201210256105 A CN201210256105 A CN 201210256105A CN 102733756 B CN102733756 B CN 102733756B
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Abstract
The invention discloses a vibration and pressure well drilling tool. An upper connector and a nozzle are arranged at the upper end of a sleeve; a driving rod is arranged at the lower end of the sleeve in a sliding manner; the lower end of the driving rod is fixedly connected with a lower connector; a plurality of stages of piston separation ring structures are arranged between the nozzle and the driving rod in the sleeve; each stage of piston separation ring structure comprises a piston approximately in a T-shaped structure, and a separation ring fixedly arranged in the sleeve and sleeved at a guide rod part of each piston; piston pressure transmitting holes communicated with a piston runner are arranged at the lower ends of the guide rod parts of the pistons; radial separation ring holes and axial separation ring holes are arranged in the separation rings; and sleeve flow guide holes are arranged in the sleeve, corresponding to the radial separation ring holes. According to the invention, shock vibration is innovatively introduced for ''stick-slip'' vibration of a drill bit, so that the stick-slip in the drilling process of the PDC (polycrystalline diamond compact) drill bit is eliminated, the PDC drill bit exerts a high-frequency and low-amplitude shock effect on the rock below, the stress status of the rock is improved, and the rock breaking efficiency is increased.
Description
Technical field
The present invention relates to the corollary apparatus technical field of oil, gas drilling, relate in particular to a kind of vibration pressurization drilling tool.
Background technology
PDC drill bit (is the english abbreviation of Polycrystalline Diamond Compact, polycrystalline diamond compact bit) be that a kind of bit speed is fast, the efficient rock-breaking instrument of long service life, good operating stability, but along with the propelling of petroleum exploration and development to deep formation, increasing with the complexity of drilling tool structure of hard formation, bad ground increases, accelerated destruction and the inefficacy of PDC drill bit, " stick-slip " vibration (being lasting accumulation and the abrupt release phenomenon of drill string moment of torsion) of drill string is the main reason that causes PDC drill bit to lose efficacy; The conventional measure of eliminating PDC drill bit " stick-slip " vibration mainly comprises: increase drill string rotating speed, optimize drilling tool structure, increase drilling fluid damping and top moment of torsion negative-feedback etc., but abovementioned technology all has some limitations, be difficult to tackle the problem at its root.
Research shows: in drilling process, by rock being applied to dynamic load impact force, in conjunction with bit teeth static load tangential pressure, the load combined effect of sound, the Cracking Mechanism of rock can be changed, when improving efficiency of breaking rock, " stick-slip " oscillation phenomenon of PDC drill bit can be significantly eliminated.
Summary of the invention
Technical problem to be solved by this invention is: a kind of vibration pressurization drilling tool is provided, for eliminating PDC drill bit in " stick-slip vibration " phenomenon of drilling process, improves the stress state of rock, improve efficiency of breaking rock.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of vibration pressurization drilling tool, comprise sleeve, and the upper end of described sleeve is provided with top connection, and the lower end that is positioned at described top connection in described sleeve is provided with nozzle, the lower end of described sleeve is slidably fitted with drive rod, and the lower end of described sleeve is stretched out in the lower end of described drive rod, and the lower end of described drive rod is fixedly connected with lower contact, and described drive rod is axially arranged with the drive rod runner of hollow along it, in described sleeve, between described nozzle and described drive rod, be provided with at least first stage piston stripper loop structure, every grade of described piston stripper loop structure comprises a piston that slides and arrange, described piston is axially arranged with the piston runner of hollow along it, the T-shaped structure of described piston, described piston has upper surface, lower surface and from described lower surface the guide peg portion to downward-extension, the lower end of described guide peg portion is provided with the piston-conveying pressure hole radially arranging along it, described piston-conveying pressure hole communicates with described piston runner, a stripper loop being fixedly installed in described sleeve, described stripper loop is sleeved on the guide peg portion of described piston, the stripper loop axial hole that described stripper loop is provided with stripper loop radial hole and communicates with described stripper loop radial hole, position corresponding to described stripper loop radial hole on described sleeve is provided with sleeve pod apertures.
As preferably, in described sleeve, between described nozzle and described drive rod, be provided with multi-level piston stripper loop structure; The upper surface of piston of first order piston stripper loop structure is, surround a pressure oscillation chamber between the lower surface of described nozzle and the inwall of described sleeve.
As preferably, the lower end of described sleeve is also provided with driving pipe nipple, between the inwall of described drive rod and described driving pipe nipple for polygonal profile coordinates.
Owing to having adopted technique scheme, the invention has the beneficial effects as follows: because a kind of pressurization drilling tool that vibrates of the present invention is provided with top connection and nozzle in the upper end of sleeve, in lower end, be slidably fitted with drive rod, the lower end of drive rod is fixedly connected with lower contact, in sleeve, between nozzle and drive rod, be provided with at least first stage piston stripper loop structure, every grade of piston stripper loop structure comprises the roughly piston for T-shaped structure of setting that slides, this piston has upper surface, lower surface and guide peg portion, the lower end of guide peg portion is provided with the piston-conveying pressure hole that radially arranges and communicate with piston runner along it, a stripper loop that is fixedly installed in sleeve and is sleeved on the guide peg portion of piston, this stripper loop is provided with stripper loop radial hole and the stripper loop axial hole communicating, position corresponding to stripper loop radial hole on sleeve is provided with sleeve pod apertures, during work, the drilling fluid of Steady Flow is flowed through and is become High Speed Turbulent after nozzle and flow by the centre bore of top connection, and after nozzle, produce the fluctuation of violent turbulent pressure, directly act on the upper surface of first order piston, the lower surface of first order piston is subject to stripper loop axial hole, the effect of the mineshaft annulus low-pressure drilling liquid of introducing after stripper loop radial hole and sleeve pod apertures are communicated with, like this, between the upper and lower end face of first order piston, mineralization pressure is poor, and this pressure difference value is along with Turbulence Flow high frequency changes, formation acts on the active force of the downward high frequency variation of first order piston, make first order piston down sliding, simultaneously, this turbulent pressure fluctuation is propagated downwards along the piston runner at first order piston center, and act in drive rod eventually by the piston-conveying pressure Kongzui of first order piston lower end, drive rod is down sliding vertically, what this high frequency was changed passes to and the direct-connected PDC drill bit of lower contact by lower contact with joint efforts, thereby make PDC drill bit produce high frequency percussion by a narrow margin to its underpart rock, eliminate " stick-slip " phenomenon in PDC drill bit drilling process, improve the stress state of rock, improve efficiency of breaking rock.
When being provided with multi-level piston stripper loop structure between nozzle and drive rod, the turbulent pressure fluctuation of drilling fluid is propagated downwards along the piston runner at first order piston center, and act on piston upper surface, the second level by the piston-conveying pressure hole of first order piston lower end, pod apertures on the stripper loop coordinating with second level piston and sleeve pod apertures are introduced the low-pressure drilling liquid in mineshaft annulus, generation acts on the low pressure effect of second level piston lower surface, forms the active force of the downward high frequency variation that acts on piston upper surface, the second level, in like manner, this turbulent pressure fluctuation is propagated downwards along the piston runner at piston center, the second level, formation acts on the pressure difference value at piston two ends in the piston stripper loop at different levels structure of bottom, generation acts on making a concerted effort of high frequency variation downward on pistons at different levels, and directly act on drive rod by afterbody piston, what drive rod changed this high frequency passes to and the direct-connected PDC drill bit of lower contact by lower contact with joint efforts, thereby make PDC drill bit produce high frequency percussion by a narrow margin to its underpart rock, eliminated " stick-slip " phenomenon in PDC drill bit drilling process, improved the stress state of rock, improved efficiency of breaking rock.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described:
Accompanying drawing is the structure cross-sectional schematic of the embodiment of the present invention;
In figure: 1-top connection; 2-nozzle; 23-pressure oscillation chamber; 3-piston; 31-upper surface; 32-lower surface; 33-guide peg portion; 34-piston runner; 4-stripper loop; 5-sleeve pod apertures; 61-stripper loop radial hole; 62-stripper loop axial hole; 7-piston-conveying pressure hole; 8-drive rod; 81-drive rod runner; 9-sleeve; 10-drives pipe nipple; 11-lower contact.
The specific embodiment
Be below a kind of specific embodiment that vibrates pressurization drilling tool of the present invention, unrestricted the present invention in order to explanation; Take give a definition into drilling fluid place as " on ", going out drilling fluid place is D score.
As shown in drawings, a kind of vibration pressurization drilling tool, comprise sleeve 9, the upper end of sleeve 9 is provided with top connection 1, the lower end that is positioned at top connection 1 in sleeve 9 is provided with nozzle 2, nozzle 2 has the nozzle passage of hollow, and wherein the entrance of nozzle passage is greater than its outlet, is divided into the conical section on top and the post ends of bottom; In the lower end of sleeve 9, be threaded and driven pipe nipple 10, in sleeve 9 and driving pipe nipple 10, be slidably fitted with drive rod 8, drive rod 8 with drive between the inwall of pipe nipple 10 as polygonal profile coordinates, be convenient to circumferential location, the lower end that drives pipe nipple 10 is stretched out in the lower end of drive rod 8, the section of stretching out of drive rod 8 is fixedly connected with lower contact 11, and drive rod 8 is axially arranged with the drive rod runner 81 of hollow along it; In sleeve 9, between nozzle 2 and drive rod 8, be provided with at least first stage piston stripper loop structure.
In the present embodiment, every grade of piston stripper loop structure comprises the piston 3 of the roughly T-shaped structure of the setting of sliding, piston 3 is axially arranged with the piston runner 34 of hollow along it, piston 3 has upper surface 31, lower surface 32 and the 32 guide peg portions 33 to downward-extension from lower surface, in the lower end of guide peg portion 33, be provided with the piston-conveying pressure hole 7 radially arranging along it, this piston-conveying pressure hole 7 communicates with piston runner 34; A stripper loop 4 being fixedly installed in sleeve 9, and stripper loop 4 is sleeved in the guide peg portion 33 of piston 3, the stripper loop axial hole 62 that this stripper loop 4 is provided with stripper loop radial hole 61 and communicates with stripper loop radial hole 61, the position corresponding to stripper loop radial hole 61 on sleeve 9 is provided with sleeve pod apertures 5.
In the present embodiment, in sleeve 9, between nozzle 2 and drive rod 8, be provided with the piston stripper loop structure that multilevel hierarchy is identical; Wherein, in the upper surface 31 of piston 3 of uppermost first order piston stripper loop structure, surround a pressure oscillation chamber 23 between the lower surface of nozzle 2 and the inwall of sleeve 9.
During a kind of vibration pressurization drilling tool assembling of the present invention: by drive rod 8, through the cooperation through hole that drives pipe nipple 10, the lower end of drive rod 8 is directly connected with the upper end of lower contact 11, drives the upper end of pipe nipple 10 and the lower end of sleeve 9 to be threaded connection; Drive rod 8 tops of sleeve 9 inside are provided with some level structures identical " piston stripper loop " structure from top to bottom successively, and piston 3 centers are processed with piston runner 34, and lower end is processed with piston-conveying pressure hole 7, for transmitting the cleaner for high-pressure drilling fluid in drill string; Stripper loop 4 is fixed in sleeve 9 and coordinates with the guide peg portion 33 of piston 3 bottoms, on stripper loop 4, there are stripper loop radial hole 61 and stripper loop axial hole 62, stripper loop radial hole 61 is connected with the sleeve pod apertures 5 on sleeve 9, is directly communicated with the low-pressure drilling liquid of mineshaft annulus; The interior the top of sleeve 9 first stage piston is that first order piston 3 is provided with nozzle 2 above, and nozzle 2 is fixed on sleeve 9; Top connection 1 is threaded with the upper end of sleeve 9.
When a kind of vibration pressurization drilling tool access drill string of the present invention is crept into: the upper end of top connection 1 is connected with upper drilling string, and the lower end of lower contact 11 is connected with PDC drill bit, the drilling fluid of Steady Flow is by the centre bore of top connection 1, the turbulent pressure fluctuation that the rear generation of nozzle 2 of flowing through is violent, in pressure oscillation chamber 23, becoming High Speed Turbulent flows, directly act on the upper surface 31 of first order piston 3, the lower surface 32 of first order piston 3 is subject to stripper loop axial hole 62, the effect of the mineshaft annulus low-pressure drilling liquid of introducing after stripper loop radial hole 61 and sleeve pod apertures 5 are communicated with, like this, between 31Yu lower surface 32, the upper surface of first order piston 3, mineralization pressure is poor, and this pressure difference value is along with Turbulence Flow high frequency changes, formation acts on the active force of the downward high frequency variation of first order piston 3, make first order piston 3 down slidings, simultaneously, this turbulent pressure fluctuation is propagated downwards along the piston runner 34 at first order piston 3 centers, and by the piston-conveying pressure hole 7 of first order piston 3 lower ends, act on the upper surface of second level piston, sleeve pod apertures 5 corresponding on stripper loop axial hole, stripper loop radial hole and sleeve 9 on the stripper loop coordinating with second level piston is introduced the low-pressure drilling liquid in mineshaft annulus, generation acts on the low pressure effect of second level piston lower surface, forms and acts on the active force that the downward high frequency on the piston of the second level changes, in like manner, this turbulent pressure fluctuation is propagated downwards along the piston runner at piston center, the second level, formation acts on the pressure difference value at piston two ends in the structure of bottom " piston stripper loop " at different levels, generation acts on making a concerted effort of high frequency variation downward on pistons at different levels, and directly act on drive rod 8 by afterbody piston, drive rod is down sliding vertically, what drive rod 8 changed this high frequency passes to PDC drill bit direct-connected with it by lower contact 11 with joint efforts, eliminate " stick-slip " phenomenon in PDC drill bit drilling process, thereby make PDC drill bit produce high frequency percussion by a narrow margin to its underpart rock, improve the stress state of rock, improve efficiency of breaking rock.The frequency of this effect of vibration power, peak value and amplitude are by regulating the shape in pressure oscillation chamber 23 and the parameters such as progression of size and " piston stripper loop " that surround between the size of mud flow rate, nozzle 2 and flow channel shape, nozzle 2 and first order piston 3 and sleeve 9 to realize.
The present invention is directed to " stick-slip " phenomenon existing in PDC drill bit drilling process, " stick-slip " vibration that impact shock is incorporated into solution drill bit of novelty, break through the limitation of the sliding measure of conventional viscosity reduction, can effectively improve drilling efficiency and the bit life of PDC drill bit in bad ground and complicated drill column structure, be with a wide range of applications.That the present invention has is simple in structure, esy to use, safe and reliable, press consumption low, do not affect drilling tool structure, be applicable to the features such as the cost of multiple offshore boring island, processing and manufacturing and working service is lower, for " stick-slip " multiple well section bit speed, reducing production costs has important practical significance.
The above is only giving an example of better embodiment of the present invention, and or not in order to limit the present invention, the part of wherein not addressing is not in detail those of ordinary skills' common practise.Protection scope of the present invention is as the criterion with the content of claim, and any equivalent transformation carrying out based on technology enlightenment of the present invention, also within protection scope of the present invention.
Claims (3)
1. a vibration pressurization drilling tool, comprises sleeve, it is characterized in that:
The upper end of described sleeve is provided with top connection, and the lower end that is positioned at described top connection in described sleeve is provided with nozzle;
The lower end of described sleeve is slidably fitted with drive rod, and the lower end of described sleeve is stretched out in the lower end of described drive rod, and the lower end of described drive rod is fixedly connected with lower contact, and described drive rod is axially arranged with the drive rod runner of hollow along it;
In described sleeve, be provided with at least first stage piston stripper loop structure between described nozzle and described drive rod, every grade of described piston stripper loop structure comprises
A piston that slides and arrange, described piston is axially arranged with the piston runner of hollow along it, the T-shaped structure of described piston, described piston has upper surface, lower surface and the guide peg portion to downward-extension from described lower surface, the lower end of described guide peg portion is provided with the piston-conveying pressure hole radially arranging along it, described piston-conveying pressure hole communicates with described piston runner
A stripper loop being fixedly installed in described sleeve, described stripper loop is sleeved on the guide peg portion of described piston, the stripper loop axial hole that described stripper loop is provided with stripper loop radial hole and communicates with described stripper loop radial hole, the position corresponding to described stripper loop radial hole on described sleeve is provided with sleeve pod apertures.
2. a kind of vibration pressurization drilling tool as claimed in claim 1, is characterized in that: in described sleeve, between described nozzle and described drive rod, be provided with multi-level piston stripper loop structure; The upper surface of piston of first order piston stripper loop structure is, surround a pressure oscillation chamber between the lower surface of described nozzle and the inwall of described sleeve.
3. a kind of vibration pressurization drilling tool as claimed in claim 1 or 2, is characterized in that: the lower end of described sleeve is also provided with driving pipe nipple, between the inwall of described drive rod and described driving pipe nipple for polygonal profile coordinates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210256105.4A CN102733756B (en) | 2012-07-23 | 2012-07-23 | Vibration and pressure well drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210256105.4A CN102733756B (en) | 2012-07-23 | 2012-07-23 | Vibration and pressure well drilling tool |
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| Publication Number | Publication Date |
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| CN102733756A CN102733756A (en) | 2012-10-17 |
| CN102733756B true CN102733756B (en) | 2014-04-09 |
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| CN201210256105.4A Active CN102733756B (en) | 2012-07-23 | 2012-07-23 | Vibration and pressure well drilling tool |
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| CN103174791B (en) * | 2013-03-22 | 2015-03-11 | 中国石油大学(华东) | Drilling column shock excitation anti-drag tool |
| CN105298380B (en) * | 2014-06-27 | 2018-05-08 | 中国石油化工股份有限公司 | Drilling rig |
| CN105484670B (en) * | 2014-10-11 | 2017-12-26 | 中国石油化工股份有限公司 | Drilling speed device |
| CN104314465B (en) * | 2014-10-16 | 2017-03-15 | 中国石油大学(华东) | A kind of drill string that reduces is with the method for borehole wall frictional resistance and a kind of segmentation joint |
| CN104499941B (en) * | 2014-12-11 | 2016-10-19 | 中国石油大学(华东) | Method of longitudinal vibration of drilling string is converted into the device of drill bit torsional pulse |
| CN106639881B (en) * | 2016-12-30 | 2019-03-22 | 陕西专壹知识产权运营有限公司 | Fluid power oscillator |
| CN106958416B (en) * | 2017-03-30 | 2019-01-25 | 中石化石油工程技术服务有限公司 | A kind of percussion drilling tool |
| CN111577141B (en) * | 2020-04-29 | 2021-08-20 | 北京工业大学 | Turbine type hydraulic oscillator for well drilling |
| CN113622823B (en) * | 2021-09-13 | 2022-09-30 | 重庆大学 | Hydraulic oscillator |
| CN115961943B (en) * | 2022-12-09 | 2024-05-28 | 重庆大学 | While-drilling hole bottom seismic source device |
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| US4270619A (en) * | 1979-10-03 | 1981-06-02 | Base Jimmy D | Downhole stabilizing tool with actuator assembly and method for using same |
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| CN102733756A (en) | 2012-10-17 |
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