CN103334704A - Rolling type eccentric wear preventing coupling capable of realizing rotation and revolution for sucker rod - Google Patents
Rolling type eccentric wear preventing coupling capable of realizing rotation and revolution for sucker rod Download PDFInfo
- Publication number
- CN103334704A CN103334704A CN201310259993XA CN201310259993A CN103334704A CN 103334704 A CN103334704 A CN 103334704A CN 201310259993X A CN201310259993X A CN 201310259993XA CN 201310259993 A CN201310259993 A CN 201310259993A CN 103334704 A CN103334704 A CN 103334704A
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- Prior art keywords
- ball
- eccentric wear
- sucker rod
- support set
- wear preventing
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- 238000005096 rolling process Methods 0.000 title abstract description 6
- 230000008878 coupling Effects 0.000 title abstract 8
- 238000010168 coupling process Methods 0.000 title abstract 8
- 238000005859 coupling reaction Methods 0.000 title abstract 8
- 230000000295 complement effect Effects 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 150000002843 nonmetals Chemical class 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- -1 nylon to make Chemical class 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The invention discloses a rolling type eccentric wear preventing coupling capable of realizing rotation and revolution for a sucker rod in the technical field of downhole tools for oil exploration. The rolling type eccentric wear preventing coupling comprises an upper joint and a lower joint, wherein the upper joint is in threaded connection with the lower joint; a reducing section is arranged between the upper joint and the lower joint; a support sleeve is movably sleeved on the reducing section; a plurality of ball holes penetrating through the wall of the support sleeve are distributed in the outer surface of the support sleeve; balls are arranged in the ball holes; pressing rings for stopping the balls are arranged on the outer sides of the balls; one side of each ball is protruded out of the surface of the inner side of the support sleeve and is matched with the surface of the reducing section; and the other side of each ball is protruded out of the outer surface of the support sleeve. During use, a plurality of eccentric wear preventing couplings for the sucker rod are connected onto a sucker rod post; the eccentric wear preventing coupling vertically moves in an oil pipe along with the sucker rod, so that the wear caused by sliding friction between the traditional eccentric wear preventing coupling and the oil pipe is eliminated; and meanwhile, the support sleeve can rotate relative to the upper joint or the lower joint, and thus the eccentric wear of the eccentric wear preventing coupling is reduced. The rolling type eccentric wear preventing coupling has the characteristics of good service performance and long service life.
Description
Technical field
The present invention relates to a kind of oil exploitation downhole tool, particularly a kind of rod collar belongs to oil exploitation device technique field.
Background technology
In the oil exploitation process, sucker rod moves up and down in oil pipe, the support set distortion that the hole deviation that need cause because of drilling well factor or geology and deviated directional drilling formation creep cause all can make oil pipe cause bending, its body of rod and joint all will produce friction with tube inner wall, and the friction of joint and tube inner wall is more outstanding, thereby wearing and tearing, especially deep-well, high angle hole, horizontal well of easily causing tube inner wall, sucker rod body and joint etc. are even more serious.Find in the scene most rod collars see it is intact from a side, and opposite side heavy wear.The pumpingh well side-abrasion of rod string causes the most direct consequence to be that bar is disconnected to take off, manage the leakage well of lying, influenced oil well yield, directly influenced the economic benefit of oil well, simultaneously, change the expense of operation on the oil pipe bar, the expense of oil pipe sucker rod all is to cause one of high reason of cost.
Problems such as for addressing the above problem, the anti-eccentric wear box cupling of the sucker rod of Cai Yonging in the past mostly adopts nonmetals such as nylon to make, and it exists self anti-wear performance poor, and application life is short.With the anti-eccentric wear box cupling that the high metal material of case hardness is made, be that line contacts sliding friction owing to what prevent the generation of eccentric wear box cupling external surface and tube inner wall, the time has been grown, and tube inner wall will be worn into one zanjon, even worn out oil pipe, causes the breakage of oil pipe.At present, eliminate the anti-eccentric wear box cupling of the sucker rod that uses and be commonly sliding friction, frictional force is big, has increased the load of oil pumper, has wasted the energy.
Summary of the invention
But the purpose of this invention is to provide a kind of rotation anti-eccentric wear box cupling of tumbling-type sucker rod that can revolve round the sun, be intended to solve and prevent in the prior art that eccentric wear box cupling and tube inner wall generation sliding friction cause box cupling easy to wear, the problem that application life is short, cost is high, operating efficiency is low.
The object of the present invention is achieved like this: the anti-eccentric wear box cupling of tumbling-type sucker rod but a kind of rotation can be revolved round the sun, comprise top connection and lower contact, be threaded between top connection and the lower contact, be provided with a undergauge section between top connection and the lower contact, be movably installed with support set on the described undergauge section, the support set external surface is distributed with some ball holes that support jacket wall that run through, be provided with ball in the ball hole, the ball hole outside is provided with the trim ring that stops ball, one pleurapophysis of described ball is complementary for support set inner surface and undergauge section surface, and the opposite side of ball protrudes from the support set external surface.
During use, connect the anti-eccentric wear box cupling of a plurality of sucker rods of the present invention at rod string, but ball rotation, also can be around the revolution of undergauge section, during work, anti-eccentric wear box cupling moves up and down in oil pipe with sucker rod, because ball can roll in ball hole, ball and tube inner wall are realized rolling friction, have eliminated the wearing and tearing that the sliding friction of anti-eccentric wear box cupling and oil pipe in the past brings, simultaneously, under the support of ball, support set self can rotate with respect to top connection or lower contact, and support set can compliance rotate, thereby, through bend the time, stressed ball is unfixing, has alleviated the eccentric wear of anti-eccentric wear box cupling self, simultaneously, because anti-eccentric wear box cupling is operated in the oil-water media, can realize the good lubrication to ball, it is good to have functional performance, characteristics such as long service life.
Stressed even for further guaranteeing, described ball is distributed with multilayer, and the ball between the adjacent layer shifts to install.More for a long time, this technical scheme can guarantee that support set still just has higher intensity in the ball hole perforate.
As a further improvement on the present invention, described ball hole inner surface is spherical ball and matches with spherical inner surface, makes ball fixing reliable, can guarantee to be between ball and the undergauge section good matched in clearance state.
For making the support set location good, described undergauge section is provided with the groove of at least one annular, described groove cooperates installation with the ball of relevant position, and the ball diameter in the groove of packing into is bigger than the ball diameter of other positions, and all ball protrudes from the outer height unanimity of support set.Ball makes support set upwards be positioned above axle with cooperating of groove, avoids producing between its termination and top connection and the lower contact wearing and tearing, simultaneously, can guarantee that also the chance of whole ball contact oil pipes is identical, avoids concentrated wear.
As a further improvement on the present invention, the position, upper and lower of the groove on the described undergauge section and support set corresponding being provided with together respectively.The design of twice groove has reliable, stable technique effect.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is another kind of structural representation of the present invention.
Wherein, 1 top connection, 2 support sets, 3 balls, 4 trim rings, 5 undergauge sections, 6 lower contacts, 7 grooves.
The specific embodiment
As shown in Figure 1, but be a kind of rotation anti-eccentric wear box cupling of tumbling-type sucker rod that can revolve round the sun, its structure mainly comprises top connection 1 and lower contact 6, be threaded between top connection 1 and the lower contact 6, be provided with a undergauge section 5 between top connection 1 and the lower contact 6, this undergauge section 5 is one with top connection 1, also can be to be one with lower contact 6; Be movably installed with support set 2 on the undergauge section 5, support set 2 external surfaces are distributed with some ball holes that support jacket wall that run through, the ball hole inner surface is spherical, be provided with ball 3 in the ball hole, the ball hole outside is provided with the trim ring 4 that stops ball 3, one pleurapophysis of ball 3 is complementary for support set 2 inner surfaces and undergauge section 5 surfaces, and the opposite side of ball 3 protrudes from support set 2 external surfaces.Ball 3 is evenly distributed with multilayer, and the ball 3 between the adjacent layer shifts to install.
During use, connect a plurality of anti-eccentric wear box cuplings that are somebody's turn to do at rod string, during work, anti-eccentric wear box cupling moves up and down in oil pipe with sucker rod, because ball 3 can roll in ball hole, ball 3 is realized rolling friction with tube inner wall, has eliminated the wearing and tearing that the sliding friction of anti-eccentric wear box cupling and oil pipe in the past brings, simultaneously, under the support of ball 3, support set 2 self can rotate with respect to top connection 1 or lower contact 6, and support set 2 can compliance be rotated, thereby, through bend the time, stressed ball 3 is unfixing, with the rotation of support set 2, understand the stressed steel ball of conversion, thereby can alleviate the eccentric wear of anti-eccentric wear box cupling self; Should be operated in the oil-water media by anti-eccentric wear box cupling, ball 3 is lubricated good, and it is good to have functional performance, the characteristics of long service life.
As shown in Figure 2, but be the another kind rotation anti-eccentric wear box cupling of tumbling-type sucker rod that can revolve round the sun, with the difference of embodiment 1 be the groove 7 that is provided with annular in undergauge section 5, this groove 7 matches with the ball 3 of relevant position, ball snaps in the groove 7 when installing, support set 2 itself is located in the axial direction, groove 7 can arrange together respectively the position corresponding with the upper and lower of support set 2, the ball diameter of packing in the groove 7 is bigger than the ball diameter of other positions, but need to guarantee that whole balls 3 protrude from the height unanimity outside the support set 2, like this, all the chance of ball contact oil pipe is identical, can avoid concentrated wear.
The present invention is not limited to above-described embodiment; on the basis of technical scheme disclosed by the invention; those skilled in the art is according to disclosed technology contents; do not need performing creative labour just can make some replacements and distortion to some technical characterictics wherein, these replacements and distortion are all in protection scope of the present invention.
Claims (5)
1. a but the rotation anti-eccentric wear box cupling of tumbling-type sucker rod that can revolve round the sun, it is characterized in that: comprise top connection and lower contact, be threaded between top connection and the lower contact, be provided with a undergauge section between top connection and the lower contact, be movably installed with support set on the described undergauge section, the support set external surface is distributed with some ball holes that support jacket wall that run through, be provided with ball in the ball hole, the ball hole outside is provided with the trim ring that stops ball, one pleurapophysis of described ball is complementary for support set inner surface and undergauge section surface, and the opposite side of ball protrudes from the support set external surface.
But 2. the rotation according to claim 1 anti-eccentric wear box cupling of tumbling-type sucker rod that can revolve round the sun, it is characterized in that: described ball is distributed with multilayer, and the ball between the adjacent layer shifts to install.
3. but the rotation according to claim 1 anti-eccentric wear box cupling of tumbling-type sucker rod that can revolve round the sun, it is characterized in that: described ball hole inner surface is spherical.
4. but any described rotation anti-eccentric wear box cupling of tumbling-type sucker rod that can revolve round the sun according to claim 1-3, it is characterized in that: described undergauge section is provided with the groove of at least one annular, described groove cooperates installation with the ball of relevant position, the interior ball diameter of groove of packing into is bigger than the ball diameter of other positions, and all balls protrude from the outer height unanimity of support set.
5. but the rotation according to claim 4 anti-eccentric wear box cupling of tumbling-type sucker rod that can revolve round the sun is characterized in that: the groove on the described undergauge section and the position, upper and lower of support set be corresponding being provided with together respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310259993.XA CN103334704B (en) | 2013-06-27 | 2013-06-27 | Can rotation can to revolve round the sun tumbling-type Anti-eccentric wear coupling of sucker rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310259993.XA CN103334704B (en) | 2013-06-27 | 2013-06-27 | Can rotation can to revolve round the sun tumbling-type Anti-eccentric wear coupling of sucker rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103334704A true CN103334704A (en) | 2013-10-02 |
| CN103334704B CN103334704B (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310259993.XA Active CN103334704B (en) | 2013-06-27 | 2013-06-27 | Can rotation can to revolve round the sun tumbling-type Anti-eccentric wear coupling of sucker rod |
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| CN (1) | CN103334704B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863523A (en) * | 2016-04-29 | 2016-08-17 | 成都来宝石油设备有限公司 | Stabilizing device for centralizing sucker rod |
| CN106837191A (en) * | 2017-01-18 | 2017-06-13 | 四川安捷油气技术服务有限公司 | Oil pipe plunger |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2784573Y (en) * | 2005-02-01 | 2006-05-31 | 中国石化集团胜利石油管理局钻井工艺研究院 | Abrasion reducing joint |
| CN200949425Y (en) * | 2006-09-03 | 2007-09-19 | 张雪明 | Eccentrically wearing-resistant collar for screw bearing sucker rod |
| CN201121494Y (en) * | 2007-09-10 | 2008-09-24 | 四川石油管理局钻采工艺技术研究院 | Drilling tool drag reduction machine |
| CN201915860U (en) * | 2010-12-17 | 2011-08-03 | 中国石油集团长城钻探工程有限公司 | Multifunctional small-borehole roller centralizer |
| CN102140894A (en) * | 2010-02-03 | 2011-08-03 | 禹立虎 | Ball friction-reducing sleeve protective device |
| CN203430435U (en) * | 2013-06-27 | 2014-02-12 | 济源市石油机械有限公司 | Rolling type sucker rod eccentric abrasion resistant coupling capable of rotation and revolution |
-
2013
- 2013-06-27 CN CN201310259993.XA patent/CN103334704B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2784573Y (en) * | 2005-02-01 | 2006-05-31 | 中国石化集团胜利石油管理局钻井工艺研究院 | Abrasion reducing joint |
| CN200949425Y (en) * | 2006-09-03 | 2007-09-19 | 张雪明 | Eccentrically wearing-resistant collar for screw bearing sucker rod |
| CN201121494Y (en) * | 2007-09-10 | 2008-09-24 | 四川石油管理局钻采工艺技术研究院 | Drilling tool drag reduction machine |
| CN102140894A (en) * | 2010-02-03 | 2011-08-03 | 禹立虎 | Ball friction-reducing sleeve protective device |
| CN201915860U (en) * | 2010-12-17 | 2011-08-03 | 中国石油集团长城钻探工程有限公司 | Multifunctional small-borehole roller centralizer |
| CN203430435U (en) * | 2013-06-27 | 2014-02-12 | 济源市石油机械有限公司 | Rolling type sucker rod eccentric abrasion resistant coupling capable of rotation and revolution |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863523A (en) * | 2016-04-29 | 2016-08-17 | 成都来宝石油设备有限公司 | Stabilizing device for centralizing sucker rod |
| CN106837191A (en) * | 2017-01-18 | 2017-06-13 | 四川安捷油气技术服务有限公司 | Oil pipe plunger |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103334704B (en) | 2015-12-09 |
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