阅读说明：本技术 一种油田抽油机井使用的抽油杆扶正器 (A kind of oil pumping rod centering device that oilfield pumping well uses ) 是由 于国江 李晶 张化庆 郭英健 丛日东 杨凤凯 姚炳龙 孙庆伟 周敏杰 于 2019-09-20 设计创作，主要内容包括：本发明涉及石油开采辅助设备技术领域,且公开了一种油田抽油机井使用的抽油杆扶正器,包括下瓣扶正器,所述下瓣扶正器的上表面滑动卡接有上瓣扶正器,所述下瓣扶正器的上表面开设有杆槽,所述下瓣扶正器与上瓣扶正器通过杆槽固定安装有抽油杆体,所述上瓣扶正器的正面且位于杆槽的中部开设有负压槽。相较于现有技术来说,本申请技术方案采用推气板直接作用与抽油杆体与上瓣扶正器之间的气体,将气体通过出气孔排出,利用推气板上的密封柱将出气孔堵住,防止漏气,使负压槽槽中形成一个负压,从而达到上瓣扶正器对抽油杆体的固定位置确定,使扶正器在工作过程中不会有较小的滑动,达到防偏磨的作用。(The present invention relates to oil exploitation technical field of auxiliary equipment, and disclose a kind of oil pumping rod centering device that oilfield pumping well uses, including hypovalve centralizer, the upper surface slide of the hypovalve centralizer is connected with epivalve centralizer, the upper surface of the hypovalve centralizer offers bar slot, the hypovalve centralizer and epivalve centralizer are fixedly installed with the oil pumping body of rod by bar slot, the front of the epivalve centralizer and offer negative pressure trough in the middle part of bar slot.For compared to the prior art, technical scheme uses and pushes away the gas that gas plate is directly acted on and pumped between the body of rod and epivalve centralizer, gas is discharged by venthole, venthole is blocked using the sealing column pushed away on gas plate, gas leakage is prevented, makes to form a negative pressure in negative pressure trough slot, the fixation position of the oil pumping body of rod is determined to reach epivalve centralizer, so that centralizer is not had lesser sliding during the work time, has the function that eccentric abrasion prevention.)

1. a kind of oil pumping rod centering device that oilfield pumping well uses, including hypovalve centralizer (1), the hypovalve centralizer (1) Upper surface slide be connected with epivalve centralizer (2), the upper surface of the hypovalve centralizer (1) offers bar slot (4), under described Valve centralizer (1) and epivalve centralizer (2) are fixedly installed with by bar slot (4) pumps the body of rod (3), it is characterised in that: on described The front of valve centralizer (2) and be located at bar slot (4) in the middle part of offer negative pressure trough (5), the front of the epivalve centralizer (2) and It is slidably fitted with and is pushed away gas plate (6) by negative pressure trough (5), described push away is fixedly installed with sealing column in the middle part of gas plate (6) lower surface (7), the middle part for pushing away gas plate (6) upper surface and push-pull rod (8), the epivalve are movably installed with by epivalve centralizer (2) The middle part of centralizer (2) bottom and being connected to negative pressure trough (5) offers venthole (9), and the one of epivalve centralizer (2) bottom Side offers fixing groove (10).

2. the oil pumping rod centering device that a kind of oilfield pumping well according to claim 1 uses, it is characterised in that: described to push away Gas plate (6) and the closed installation of negative pressure trough (5) dimensional fits.

3. the oil pumping rod centering device that a kind of oilfield pumping well according to claim 1 uses, it is characterised in that: described close Feng Zhu (7) is in a circular table shape, and gas plate (6) connecting pin is bigger than other end diameter with pushing away.

4. the oil pumping rod centering device that a kind of oilfield pumping well according to claim 1 uses, it is characterised in that: on described The osculum of valve centralizer (2) slides clamping to the big mouth of the oil pumping body of rod (3), and the push-pull rod (8) is stretched out from osculum, the push-and-pull The U-shaped fixing groove (10) on another valve in the hand-held one end pushed of bar (8) cooperates, and push-pull rod (8) and fixing groove (10) It is in a circular table shape at cooperation.

Technical field

The present invention relates to oil exploitation technical field of auxiliary equipment, specially a kind of sucker rod that oilfield pumping well uses Centralizer.

Background technique

Oil pumping rod centering device is that pumpingh well eccentric wear downhole tool is prevented to be particularly suitable for suitable for the rod-pumped well of eccentric wear The rod-pumped well and deviated directional drilling of the above eccentric wear of the sucker rod point of neutralization.

Refering to Figure of description 1, according to existing oil pumping rod centering device, oil pumping rod centering device is divided into hypovalve centralizer 1 With 2 two parts of epivalve centralizer, this two valves oil pumping rod centering device has the mutually matched tongue and groove of male and female respectively, this using nylon The elasticity of material, any one position needed that can be stuck on the oil pumping body of rod 3, to reach eccentric abrasion prevention to the oil pumping body of rod 3 Effect.

Existing valve-type sucker rod centering device has following defect:

First, since hypovalve centralizer 1 and epivalve centralizer 2 snap on the oil pumping body of rod 3, in prolonged use Cheng Zhong, the oil pumping body of rod 3 constantly move up and down, and will lead to hypovalve centralizer 1 and epivalve centralizer 2 so during the work time The problem of small-scale sliding can occur, be easy to produce double mills, to not have the effect of eccentric abrasion prevention.

Second, hypovalve centralizer 1 and epivalve centralizer 2 are two valve plug-ins, in the fortune up and down for following hypovalve centralizer 1 During dynamic, it may occur that the problem of release falls off can be straight after release since hypovalve centralizer 1 and epivalve centralizer 2 are to separate It connects to fall into oil well and causes holddown accident, to influence the safety of oil-producing and the output efficiency of petroleum.

Summary of the invention

The present invention provides a kind of oil pumping rod centering device that oilfield pumping well uses, have that locking is more constant, prevents from altering Dynamic double mill, the advantages of improving the efficiency of oil-producing, small range play can be occurred by, which solving, is easy that double mills, clamping is not fixed, produces up and down Not safe enough the problem of oil.

The invention provides the following technical scheme: a kind of oil pumping rod centering device that oilfield pumping well uses, including hypovalve are helped Positive device, the upper surface slide of the hypovalve centralizer are connected with epivalve centralizer, and the upper surface of the hypovalve centralizer offers Bar slot, the hypovalve centralizer and epivalve centralizer are fixedly installed with the oil pumping body of rod by bar slot, and the epivalve centralizer is just Face and it is located in the middle part of bar slot and offers negative pressure trough, the front of the epivalve centralizer and is slidably fitted with by negative pressure trough and pushes away gas Plate, described push away are fixedly installed with sealing column in the middle part of gas plate lower surface, the middle part for pushing away gas plate upper surface and helped by epivalve Positive device is movably installed with push-pull rod, the middle part of epivalve centralizer bottom and is connected to negative pressure trough and offers venthole, described The side of epivalve centralizer bottom offers fixing groove.

It is preferably, it is described to push away gas plate and the closed installation of negative pressure trough dimensional fits.

It is that preferably the sealing column is in a circular table shape, and gas plate connecting pin is bigger than other end diameter with pushing away.

It is preferably, the osculum of the epivalve centralizer slides clamping to the big mouth of the oil pumping body of rod, and the push-pull rod is from small Mouth stretches out, the U-shaped fixing groove cooperation on another valve in the hand-held one end pushed of the push-pull rod, and push-pull rod and fixing groove It is in a circular table shape at cooperation.

The present invention have it is following the utility model has the advantages that

For compared to the prior art, technical scheme is helped with epivalve with the body of rod of pumping using pushing away gas plate and directly act on Gas is discharged by venthole, is blocked venthole using the sealing column pushed away on gas plate, anti-leak-stopping by the gas between positive device Gas makes to form a negative pressure in negative pressure trough slot, determines to reach epivalve centralizer to the fixation position of the oil pumping body of rod, makes righting Device does not have lesser sliding during the work time, has the function that eccentric abrasion prevention.

For compared to the prior art, technical scheme directly acts on hypovalve centralizer and epivalve using push-pull rod The side of centralizer makes hypovalve centralizer follow the oil pumping body of rod or more to transport with epivalve centralizer by the push-pull rod of the left and right sides It in dynamic process, is capable of fixing together, will not slide and separate, and in the feelings of hypovalve centralizer and epivalve centralizer serious wear Under condition, the phenomenon that causing holddown will not fall off, still cover on the oil pumping body of rod.

Detailed description of the invention

Fig. 1 is existing mounting structure schematic diagram；

Fig. 2 is the installation structure diagram of the invention；

Fig. 3 is hypovalve centralizer backsight structural representation of the present invention；

Fig. 4 is hypovalve centralizer schematic view of the front view of the present invention；

Fig. 5 is that the present invention pushes away gas plate structural schematic diagram.

In figure: 1, hypovalve centralizer；2, epivalve centralizer；3, the oil pumping body of rod；4, bar slot；5, negative pressure trough；6, gas plate is pushed away；7, Sealing column；8, push-pull rod；9, venthole；10, fixing groove.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description.

Fig. 2-5, a kind of oil pumping rod centering device that oilfield pumping well uses, including hypovalve centralizer 1 are please referred to, hypovalve is helped The upper surface slide of positive device 1 is connected with epivalve centralizer 2, and the upper surface of hypovalve centralizer 1 offers bar slot 4, hypovalve centralizer 1 The oil pumping body of rod 3, the front of epivalve centralizer 2 and the middle part for being located at bar slot 4 are fixedly installed with by bar slot 4 with epivalve centralizer 2 It offers negative pressure trough 5, the front of epivalve centralizer 2 and is slidably fitted with by negative pressure trough 5 and pushes away gas plate 6, push away 6 lower surface of gas plate Middle part is fixedly installed with sealing column 7, pushes away the middle part of 6 upper surface of gas plate and is movably installed with push-pull rod 8 by epivalve centralizer 2, It the middle part of 2 bottom of epivalve centralizer and is connected to negative pressure trough 5 and offers venthole 9, the side of 2 bottom of epivalve centralizer offers Fixing groove 10.

Wherein, gas plate 6 and the closed installation of 5 dimensional fits of negative pressure trough are pushed away, by negative pressure trough 5 with push away being coupled for gas plate 6, So that push-pull rod 8 is pushed away the movement of gas plate 6, the air in negative pressure trough 5 can be made to be discharged completely by venthole 9, it will not be with negative pressure Slot 5 and the gap pushed away between gas plate 6 flow back into negative pressure trough 5, solve and push away gas plate 6 to the exhaust event exhaust of negative pressure trough 5 Not exclusively, cause the negative pressure in negative pressure trough 5 not strong enough, hypovalve centralizer 1 and epivalve centralizer 2 are mounted on the oil pumping body of rod 3 not It is fixed, still there is the problem of a small amount of displacement, the installation for improving 2 pairs of oil pumping bodies of rod 3 of hypovalve centralizer 1 and epivalve centralizer is fixed Property, it ensure that the eccentric wear of hypovalve centralizer 1 and 2 pairs of oil pumping bodies of rod 3 of epivalve centralizer is protected.

Wherein, sealing column 7 is in a circular table shape, and 6 connecting pin of gas plate is bigger than other end diameter with pushing away, and passes through round table-like sealing column 7 cooperate with venthole 9, after pushing away gas plate 6 for air extrusion in negative pressure trough 5, block venthole 9 by sealing column 7, prevent gas Body reflux, causes the negative pressure in negative pressure trough 5 to be not sufficiently stable after solving gas backstreaming, and epivalve centralizer 2 is connect with the oil pumping body of rod 3 It is not fixed, thin tail sheep eccentric wear is led to the problem of to the oil pumping body of rod 3, the airtightness of negative pressure space in negative pressure trough 5 is realized, improves Hypovalve centralizer 1 and 2 pairs of 3 gripping property of the oil pumping body of rod of epivalve centralizer.

Wherein, the osculum of epivalve centralizer 2 slides clamping to the big mouth of the oil pumping body of rod 3, and push-pull rod 8 is stretched out from osculum, pushed away The U-shaped fixing groove 10 on another valve in the hand-held one end pushed of pull rod 8 cooperates, and at push-pull rod 8 and 10 cooperation of fixing groove It is in a circular table shape, by the determination of push-pull rod 8 position and shape, hypovalve centralizer 1 can be made to be coupled with epivalve centralizer 2 Afterwards, it can be fixedly connected again by push-pull rod 8 between the two, solve the mistake moved up and down in long-time with the oil pumping body of rod 3 Cheng Zhong, it may occur that after dismantling, and abrasion, hypovalve centralizer 1 and epivalve centralizer 2 are isolated and fallen off into oil well, cause card The problem of pump accident, ensure that the installation stationarity of hypovalve centralizer 1 Yu epivalve centralizer 2, improve the peace in oil pumping process Quan Xingyu pumping efficiency.

The oil pumping rod centering device working principle that oilfield pumping well uses is as follows:

Hypovalve centralizer 1 is installed, then by epivalve centralizer 2 and hypovalve at the eccentric wear more than the point of neutralization of the oil pumping body of rod 3 The cooperation of centralizer 1 is slidably installed, and the push-pull rod 8 of 2 side of epivalve centralizer is pushed, to push away gas plate with epivalve centralizer 2 6, so that negative pressure trough 5 is formed a negative pressure space, sealing column 7 and venthole 9 cooperate, and block venthole 9, at this time the one of push-pull rod 8 End cooperates with the fixing groove 10 in hypovalve centralizer 1, then pushes the push-pull rod 8 on hypovalve centralizer 1, makes on hypovalve centralizer 1 Push-pull rod 8 and epivalve centralizer 2 on fixing groove 10 cooperate, by centralizer be mounted on oil pumping the body of rod 3 on, reach to sucker rod The eccentric abrasion prevention effect of body 3.