CN102828699B - Anti-torsion sucker rod - Google Patents
Anti-torsion sucker rod Download PDFInfo
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- CN102828699B CN102828699B CN201210355002.3A CN201210355002A CN102828699B CN 102828699 B CN102828699 B CN 102828699B CN 201210355002 A CN201210355002 A CN 201210355002A CN 102828699 B CN102828699 B CN 102828699B
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- sucker rod
- thread
- annular protrusion
- box cupling
- threaded
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Abstract
The invention discloses an anti-torsion sucker rod which comprises a first sucker rod and a second sucker rod connected together through a coupling, wherein the first sucker rod is provided with a first annular bulge and a first threaded end in threaded connection with the coupling; the second sucker rod is provided with a second annular bulge and a second threaded end in threaded connection with the coupling; the two end surfaces of the coupling are placed against the end surfaces of the first annular bulge and the second annular bulge respectively; and the end surfaces of the first threaded end and the second threaded end are placed against each other. The anti-torsion sucker rod disclosed by the invention solves the technical problems of poor torsion resistance and short service life of the sucker rod, and is widely applied to oil fields, oil gas and drilling.
Description
Technical field
The present invention relates to sucker rod technical field, particularly relate to a kind of anti-twisting sucker rod.
Background technology
Along with the development of petroleum industry, the exploitation of deep-well, heavy oil wells is more and more, and the load of pumping unit becomes complicated, and rod parting accident often occurs in oil field.Trace it to its cause, the exploitation of deep-well, sucker rod roofbolt is long or there is holddown phenomenon, and the tensile load that sucker rod is subject to is large, and cause rod broken, in thickened oil recovery, the load of roofbolt is larger.When adopting screw pump technique to recover the oil, sucker rod mainly bears high pulling torque load, and this torque load is concerning sucker rod screw thread, and the torsion that generations is detained, causing the tensile load of sucker rod screw thread, stress groove increasing, when exceeding its intensity, rupturing.These situations have a strong impact on the application life of oil production equipment, and part oil field uses screw pump, requires that sucker rod can transmit high torque performance.
Be the product by API standard production in the market, to torsional strength not requirement, as shown in Figure 1, comprise the first sucker rod 1 and the second sucker rod 2 linked together by box cupling 3, first end of thread 12 that first sucker rod 1 is provided with the first annular protrusion 11 and is threaded with box cupling 3, second end of thread 22 that second sucker rod 2 is provided with the second annular protrusion 21 and is threaded with box cupling 3, two end faces of box cupling 3 offset with the end face of the first annular protrusion 11 and the second annular protrusion 21 respectively, a very large intersegmental gap is there is between first end of thread 12 and second end of thread 22, screw thread and two end faces are relied on to bear torsion, the rod collar 3 even had adopts taper thread, very large gap is there is especially between first end of thread 12 and second end of thread 22, even two end faces of box cupling 3 do not lean on annular protrusion, torsion is born completely by screw thread, like this when screw bolt well uses, torsional property and bonding strength are all subject to certain restrictions, greatly have impact on the application life of sucker rod.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of anti-twisting sucker rod, the technical problem that sucker rod torsional property is poor to solve, application life is short.
For solving the problems of the technologies described above, technical scheme of the present invention is: anti-twisting sucker rod, comprise the first sucker rod and the second sucker rod that are linked together by box cupling, first end of thread that described first sucker rod is provided with the first annular protrusion and is threaded with described box cupling, second end of thread that described second sucker rod is provided with the second annular protrusion and is threaded with described box cupling, two end faces of described box cupling offset with the end face of described first annular protrusion and the second annular protrusion respectively; The end face of described first end of thread and second end of thread offsets.
After have employed technique scheme, the invention has the beneficial effects as follows: because the end face of first end of thread and second end of thread offsets, add place's stress point of sucker rod, make the end face of screw thread, annular protrusion and the end of thread can both be stressed, improve the torsional property of sucker rod, during use, sucker rod and box cupling are twisted tighter, the compressive stress that the end of thread of sucker rod is subject to is also larger, enters oil well under sucker rod, when reciprocation cycle is recovered the oil, under tension, offset part compressive stress, improve the stressing conditions of screw thread, substantially prolongs the application life of sucker rod.
Accompanying drawing explanation
Fig. 1 is the structural representation of traditional sucker rod;
Fig. 2 is structural representation of the present invention;
In figure: 1, the first sucker rod, the 11, first annular protrusion, 12, first end of thread, the 2, second sucker rod, the 21, second annular protrusion, 22, second end of thread, 3, box cupling.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described.
As shown in Figure 2, a kind of anti-twisting sucker rod, comprise the first sucker rod 1 and the second sucker rod 2 linked together by box cupling 3, first end of thread 12 that first sucker rod 1 is provided with the first annular protrusion 11 and is threaded with box cupling 3, second end of thread 22 that second sucker rod 2 is provided with the second annular protrusion 21 and is threaded with box cupling 3, by controlling the length tolerance of box cupling 3 reach tolerance and control first end of thread 12 and second end of thread 22, when box cupling 3 and the first sucker rod 1 and the second sucker rod 2 are tightened, two end faces of box cupling 3 offset with the end face of the first annular protrusion 11 and the second annular protrusion 21 respectively, the end face of first end of thread 12 and second end of thread 22 offsets.
During use, first sucker rod 1 and the second sucker rod 2 are all tightened with box cupling 3, by also tight with the end face of box cupling 3 while of the first annular protrusion 11 and the second annular protrusion 21, the end face of first end of thread 12 and second end of thread 22 offsets, the end face of screw thread, annular protrusion and the end of thread carries simultaneously, bearing surface increases, and back-off loosens the moment of resistance and increases by the increase of rubbing surface, substantially increases antitorque and anti-loose ability; The increase of bearing surface simultaneously, the stressed increase of screw thread, for ensureing the reliability of bonding strength, can reach be lengthened, the precision parameter of the controlled pitch of screws, accurately calculate the gap between screw thread, can ensure that the end face of annular protrusion and the end of thread is simultaneously stressed, but do not change the versatility that original sucker rod connects, change the machining accuracy of screw thread stressed zone, effectively improve bonding strength.
The present invention is not limited to above-mentioned concrete embodiment, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, done all conversion, all drop within protection scope of the present invention.
Claims (1)
1. anti-twisting sucker rod, comprise the first sucker rod and the second sucker rod that are linked together by box cupling, first end of thread that described first sucker rod is provided with the first annular protrusion and is threaded with described box cupling, second end of thread that described second sucker rod is provided with the second annular protrusion and is threaded with described box cupling, two end faces of described box cupling offset with the end face of described first annular protrusion and the second annular protrusion respectively; It is characterized in that: the end face of described first end of thread and second end of thread offsets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210355002.3A CN102828699B (en) | 2012-09-21 | 2012-09-21 | Anti-torsion sucker rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210355002.3A CN102828699B (en) | 2012-09-21 | 2012-09-21 | Anti-torsion sucker rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102828699A CN102828699A (en) | 2012-12-19 |
| CN102828699B true CN102828699B (en) | 2015-02-11 |
Family
ID=47331987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210355002.3A Active CN102828699B (en) | 2012-09-21 | 2012-09-21 | Anti-torsion sucker rod |
Country Status (1)
| Country | Link |
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| CN (1) | CN102828699B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104120984A (en) * | 2013-04-24 | 2014-10-29 | 成都科盛石油科技有限公司 | Resettable sucker rod assembly structure |
| CN104420837B (en) * | 2013-09-02 | 2016-08-10 | 深圳市百勤石油技术有限公司 | A kind of method preventing oil pipe from causing footpath to be contracted because torque wrench moment is excessive |
| CN112227963B (en) * | 2020-10-28 | 2022-07-05 | 蒋东 | Anti-torsion sucker rod |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2133050A (en) * | 1936-06-17 | 1938-10-11 | Richard P Simmons | Sucker rod and combined coupling and torsion joint therefor |
| CN2367761Y (en) * | 1999-02-24 | 2000-03-08 | 张明 | Anti-drop single spinner for sucker rod |
| CN200968279Y (en) * | 2006-09-01 | 2007-10-31 | 山东九环石油机械有限公司 | Pole special for trapezium side-plug-in dropping stop screw pump well |
| CN201031626Y (en) * | 2007-06-01 | 2008-03-05 | 山东九环石油机械有限公司 | Super-high intensity side inserting type losing stop type anti-twist integral pumping rod |
| CN201059164Y (en) * | 2007-07-10 | 2008-05-14 | 滨州市远宇化工机械有限责任公司 | Novel torsion-resistant disconnecting-proof pumping rod |
| CN201193486Y (en) * | 2008-04-03 | 2009-02-11 | 内蒙古一机集团大地石油机械有限责任公司 | Torsion resistant ultrahigh strength anti-corrosive sucker rod |
| CN201513133U (en) * | 2009-09-29 | 2010-06-23 | 山东墨龙石油机械股份有限公司 | Back-off prevention self-locking sucker rod |
| CN102071880A (en) * | 2010-12-16 | 2011-05-25 | 葫芦岛龙源采油配套设备有限公司 | Anti-falling centering device for sucker rod |
| CN201953320U (en) * | 2011-01-18 | 2011-08-31 | 大庆航天三沃新技术产业有限责任公司 | Bending-prevention and twisting-prevention telescopic rotating joint of sucker rod |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7431347B2 (en) * | 2003-09-24 | 2008-10-07 | Siderca S.A.I.C. | Hollow sucker rod connection with second torque shoulder |
-
2012
- 2012-09-21 CN CN201210355002.3A patent/CN102828699B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2133050A (en) * | 1936-06-17 | 1938-10-11 | Richard P Simmons | Sucker rod and combined coupling and torsion joint therefor |
| CN2367761Y (en) * | 1999-02-24 | 2000-03-08 | 张明 | Anti-drop single spinner for sucker rod |
| CN200968279Y (en) * | 2006-09-01 | 2007-10-31 | 山东九环石油机械有限公司 | Pole special for trapezium side-plug-in dropping stop screw pump well |
| CN201031626Y (en) * | 2007-06-01 | 2008-03-05 | 山东九环石油机械有限公司 | Super-high intensity side inserting type losing stop type anti-twist integral pumping rod |
| CN201059164Y (en) * | 2007-07-10 | 2008-05-14 | 滨州市远宇化工机械有限责任公司 | Novel torsion-resistant disconnecting-proof pumping rod |
| CN201193486Y (en) * | 2008-04-03 | 2009-02-11 | 内蒙古一机集团大地石油机械有限责任公司 | Torsion resistant ultrahigh strength anti-corrosive sucker rod |
| CN201513133U (en) * | 2009-09-29 | 2010-06-23 | 山东墨龙石油机械股份有限公司 | Back-off prevention self-locking sucker rod |
| CN102071880A (en) * | 2010-12-16 | 2011-05-25 | 葫芦岛龙源采油配套设备有限公司 | Anti-falling centering device for sucker rod |
| CN201953320U (en) * | 2011-01-18 | 2011-08-31 | 大庆航天三沃新技术产业有限责任公司 | Bending-prevention and twisting-prevention telescopic rotating joint of sucker rod |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102828699A (en) | 2012-12-19 |
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