Eccentric wear prevention centralizing sucker rod

Abstract

The utility model discloses an anti-eccentric wear centralizing sucker rod, which relates to the technical field of sucker rods and comprises an anti-eccentric sleeve, a sucker rod is rotatably clamped in the anti-eccentric sleeve, impurity removal sleeves are in threaded connection with two ends of the anti-eccentric sleeve, impurity removal circular grooves are formed in the centers of the interiors of the two impurity removal sleeves, and the two impurity removal circular grooves are in threaded connection with the anti-eccentric sleeve. And the sucker rod penetrates through the interior of the impurity removal circular groove, and a first mounting groove is formed in one end of the inner side of the impurity removal circular groove. Petroleum crude oil attached to the sucker rod is removed through the matching effect between the impurity removal scraping ring and the sealing gasket, when a worker rotates the sucker rod to enable the sucker rod to be straightened in the deviation prevention sleeve, the sealing gasket prevents the petroleum crude oil from entering the deviation prevention sleeve, meanwhile, the impurity removal scraping ring scrapes petroleum crude oil impurities attached to the sucker rod, and therefore the sucker rod is prevented from being damaged. And crude oil impurities are prevented from entering the anti-deviation sleeve to affect the accuracy of correcting the sucker rod by the anti-deviation sleeve, and the service life of the anti-eccentric-wear centralizing sucker rod is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of sucker rods, in particular to an anti-eccentric wear supporting sucker rod. Background Art

[0002] Sucker rods are usually long and thin rods, and the length of a single rod may be 7.62 meters, 8 meters or 9.14 meters. They are made of low-carbon alloy steel and are tempered to improve their performance. The sucker rods are connected in the oil pipe by internal threaded hoops to form a long rod that extends all the way to the piston in the underground oil layer. The pumping unit drives the sucker rod to reciprocate up and down, and then drives the oil pump to pump oil. In order to reduce the friction and wear of the sucker rod when it moves up and down in the oil pipe, a sucker rod straightener is usually used. This tool can enhance the oil production life of the pumping unit, especially for eccentric wear pumping wells and directional inclined wells.

[0003] For example, the anti-wear and eccentrically-aligned straightening sucker rod disclosed in Chinese patent publication number CN220133921U includes an anti-eccentric sleeve, an upper sucker rod is rotatably provided on the upper end of the anti-eccentric sleeve, a driving sleeve connected to the upper sucker rod is rotatably provided inside the anti-eccentric sleeve, a rising lifting sleeve is threadedly connected to the inside of the driving sleeve, a plurality of straightening rods are arranged to swing along the axial direction thereof around the outer wall of the anti-eccentric sleeve, and the lifting sleeve is used to control the swing angle of the straightening rod through a driving structure.

[0004] Although the above patent can straighten the sucker rod, when the sucker rod is rotated to straighten, the crude oil on the surface of the sucker rod will enter the inside of the anti-deviation sleeve, and then the solid impurities in the crude oil will enter the inside of the anti-deviation sleeve, thereby wearing the lifting sleeve and the driving sleeve, affecting the service life of the anti-deviation wear straightening sucker rod. Utility Model Content

[0005] The utility model aims to solve the problem in the prior art that when the sucker rod is rotated and straightened, the crude oil on the surface of the sucker rod will enter the interior of the anti-deviation sleeve, and then the solid impurities in the crude oil will enter the interior of the anti-deviation sleeve, thereby wearing the lifting sleeve and the driving sleeve, and affecting the service life of the anti-deviation wear straightening sucker rod, and proposes an anti-deviation wear straightening sucker rod.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an anti-biased wear support for a formal sucker rod, comprising an anti-biased sleeve, the sucker rod is rotatably clamped inside the anti-biased sleeve, both ends of the anti-biased sleeve are threadedly connected with a debris removal sleeve, and the centers of the two debris removal sleeves are provided with a debris removal circular groove, the sucker rod passes through the interior of the debris removal circular groove, and one end of the inner side of the debris removal circular groove is provided with a No. 1 installation groove, a sealing gasket is movably clamped inside the No. 1 installation groove, and one end of the debris removal sleeve is fixedly connected with a debris removal scraper ring.

[0007] Preferably, a No. 2 mounting groove is provided on the outer side of the impurity removing sleeve, and a wear-resistant gasket is movably clamped inside the No. 2 mounting groove.

[0008] Preferably, the wear-resistant washer comprises a mounting washer, and an anti-collision washer is fixedly connected to the outer side of the mounting washer.

[0009] Preferably, debris discharge openings are symmetrically provided on the outer side of the anti-collision gasket.

[0010] Preferably, a debris guide groove is provided on the top surface of the anti-collision gasket.

[0011] Preferably, the middle portion of the impurity introducing groove is higher than the outlets at both ends.

[0012] Preferably, the impurity removal sleeve is in the shape of a frustum.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are:

[0014] 1. In the utility model, the scraper ring and the sealing gasket are used to remove the crude oil attached to the sucker rod. When the worker rotates the sucker rod to straighten it in the anti-deflection sleeve, the sealing gasket prevents the crude oil from entering the interior of the anti-deflection sleeve. At the same time, the scraper ring scrapes off the crude oil impurities attached to the sucker rod, thereby preventing the crude oil impurities from entering the interior of the anti-deflection sleeve and affecting the accuracy of the anti-deflection sleeve in correcting the sucker rod, thereby extending the service life of the sucker rod.

[0015] 2. In the utility model, the anti-eccentric wear supporting official sucker rod is protected by the protective function of the anti-collision gasket. When the anti-eccentric wear supporting official sucker rod is offset and tilted, the anti-collision gasket replaces the anti-eccentric sleeve to contact the inner wall of the oil pipe, thereby reducing the wear of the anti-eccentric sleeve on the oil pipe. At the same time, the impurities scraped off by the impurity scraper ring enter the interior of the impurity introducing groove. Since the impurity introducing groove is high in the middle and low on both sides, the impurities flow out from both ends of the impurity introducing groove and finally flow into the crude oil through the impurity discharge port, thereby preventing impurities from accumulating at both ends of the impurity removing sleeve and affecting the impurity removing efficiency of the impurity removing sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The three-dimensional structural diagram of the anti-eccentric wear supporting pump rod proposed in the utility model;

[0017] Figure 2 A schematic diagram of the connection relationship between the anti-bias sleeve and the impurity removal sleeve in the anti-bias wear support pump rod proposed by the utility model;

[0018] Figure 3 The utility model provides a schematic diagram of the internal structure of the debris removal sleeve in the pumping rod for preventing eccentric wear;

[0019] Figure 4The utility model provides a three-dimensional structural schematic diagram of a wear-resistant washer in a pumping rod for preventing eccentric wear.

[0020] Legend: 1. Anti-bias sleeve; 2. Sucker rod; 3. Debris removal sleeve; 31. Debris removal circular groove; 32. No. 1 mounting groove; 33. Sealing gasket; 34. Debris removal scraper ring; 35. No. 2 mounting groove; 4. Wear-resistant gasket; 41. Mounting gasket; 42. Anti-collision gasket; 421. Debris discharge port; 422. Debris guide groove. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure. Embodiment 1

[0023] like Figure 1-3 As shown, the utility model provides an anti-wear supporting sucker rod, including an anti-wear sleeve 1, a sucker rod 2 is rotatably clamped inside the anti-wear sleeve 1, both ends of the anti-wear sleeve 1 are threadedly connected with debris removal sleeves 3, and the centers of the two debris removal sleeves 3 are provided with debris removal circular grooves 31, the sucker rod 2 passes through the interior of the debris removal circular groove 31, and one end of the inner side of the debris removal circular groove 31 is provided with a No. 1 mounting groove 32, and a sealing gasket 33 is movably clamped inside the No. 1 mounting groove 32, and one end of the debris removal sleeve 3 is fixedly connected with a debris removal scraper ring 34, and the shape of the debris removal sleeve 3 is a truncated cone.

[0024] The following is a detailed description of the specific settings and functions of this embodiment. When the worker rotates the sucker rod 2 to straighten it inside the anti-deviation sleeve 1, the sealing gasket 33 prevents the crude oil from entering the interior of the anti-deviation sleeve 1. At the same time, the scraper ring 34 fixedly connected to one end of the scraper sleeve 3 scrapes off the crude oil impurities attached to the sucker rod 2, thereby preventing the crude oil impurities from entering the interior of the anti-deviation sleeve 1 and affecting the accuracy of the anti-deviation sleeve 1 in correcting the sucker rod 2, thereby extending the service life of the anti-deviation wear supporting pump rod. Since the shape of the scraper sleeve 3 is a truncated cone, impurities in the crude oil will not accumulate on the surface of the scraper sleeve 3. Impurities in the crude oil are affected by gravity and the thrust of the crude oil inside the oil pipe and enter the interior of the impurity guiding groove 422. In addition, the impurity removing sleeve 3 and the impurity removing scraper ring 34 are made of polymer material, which has good self-lubrication and low friction coefficient, and can reduce the friction and wear between the sucker rod 2 and the oil pipe. In addition, it also has good physical and chemical properties of resistance to high temperature, high pressure and chemical corrosion, and can fully adapt to the complex downhole environment; since the sealing gasket 33 is movably clamped in the interior of the No. 1 mounting groove 32, the maintenance worker can regularly replace the sealing gasket 33 to ensure the sealing of the anti-bias wear support formal sucker rod. Embodiment 2

[0025] like Figure 3 and Figure 4 As shown, a No. 2 mounting groove 35 is provided on the outer side of the impurity removing sleeve 3, and a wear-resistant gasket 4 is movably clamped inside the No. 2 mounting groove 35. The wear-resistant gasket 4 includes a mounting gasket 41, and an anti-collision gasket 42 is fixedly connected to the outer side of the mounting gasket 41. Impurity discharge ports 421 are symmetrically provided on the outer side of the anti-collision gasket 42, and an impurity introduction groove 422 is provided on the top surface of the anti-collision gasket 42, and the middle part of the impurity introduction groove 422 is higher than the outlets at both ends.

[0026] The effect achieved by the entire embodiment is that when the anti-biased wear supporting formal sucker rod is offset and tilted, the anti-collision gasket 42 replaces the anti-biased sleeve 1 to contact the inner wall of the oil pipe, thereby reducing the wear of the oil pipe on the anti-biased sleeve 1. At the same time, the impurities scraped off by the impurity scraper ring 34 enter the interior of the impurity introducing groove 422. Since the impurity introducing groove 422 is high in the middle and low on both sides, the impurities flow out from both ends of the impurity introducing groove 422 and finally flow into the crude oil through the impurity discharge port 421, thereby preventing impurities from accumulating at both ends of the impurity removing sleeve 3 and affecting the impurity removing efficiency of the impurity removing sleeve 3. Since the wear-resistant gasket 4 is movably clamped in the interior of the No. 2 mounting groove 35, the maintenance worker can regularly replace the wear-resistant gasket 4 to extend the service life of the anti-biased wear supporting formal sucker rod.

[0027] The use method and working principle of the device are as follows: when the worker rotates the sucker rod 2 to make it straightened inside the anti-deflection sleeve 1, the sealing gasket 33 prevents the crude oil from entering the anti-deflection sleeve 1, and at the same time, the impurity scraping ring 34 fixedly connected to one end of the impurity removing sleeve 3 scrapes off the impurities of the crude oil attached to the sucker rod 2. Since the impurity removing sleeve 3 is in the shape of a truncated cone, the surface of the impurity removing sleeve 3 will not accumulate impurities in the crude oil, and the impurities in the crude oil are affected by gravity and the thrust of the crude oil inside the oil pipe and enter the interior of the impurity introducing groove 422;

[0028] When the anti-bias wear support formally deviates and tilts, the anti-collision gasket 42 replaces the anti-bias wear sleeve 1 to contact the inner wall of the oil pipe, reducing the wear of the oil pipe on the anti-bias wear sleeve 1. At the same time, the impurities scraped off by the scraper ring 34 enter the interior of the impurity introducing groove 422. Since the impurities introducing groove 422 is high in the middle and low on both sides, the impurities flow out from both ends of the impurity introducing groove 422 and finally flow into the crude oil through the impurity discharge port 421.

[0029] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An anti-eccentric wear supporting pump rod, comprising an anti-eccentric wear sleeve (1), characterized in that: The anti-deflection sleeve (1) is rotatably clamped with a sucker rod (2). Both ends of the anti-deflection sleeve (1) are threadedly connected to a debris removal sleeve (3). A debris removal circular groove (31) is provided at the center of each of the two debris removal sleeves (3). The sucker rod (2) passes through the interior of the debris removal circular groove (31). A No. 1 mounting groove (32) is provided at one end of the inner side of the debris removal circular groove (31). A sealing gasket (33) is movably clamped inside the No. 1 mounting groove (32). One end of the debris removal sleeve (3) is fixedly connected to a debris removal scraper ring (34).

2. The anti-eccentric wear supporting pump rod according to claim 1, characterized in that: A second mounting groove (35) is provided on the outer side of the impurity removal sleeve (3), and a wear-resistant washer (4) is movably engaged inside the second mounting groove (35).

3. The anti-eccentric wear supporting pumping rod according to claim 2 is characterized in that: The wear-resistant washer (4) comprises a mounting washer (41), and an anti-collision washer (42) is fixedly connected to the outer side of the mounting washer (41).

4. The anti-eccentric wear supporting pump rod according to claim 3 is characterized in that: The outer side of the anti-collision gasket (42) is symmetrically provided with debris discharge openings (421).

5. The anti-eccentric wear supporting pumping rod according to claim 4 is characterized in that: The top surface of the anti-collision gasket (42) is provided with a debris introduction groove (422).

6. The anti-eccentric wear supporting pumping rod according to claim 5 is characterized in that: The middle portion of the impurity introduction groove (422) is higher than the outlets at both ends.

7. The anti-eccentric wear supporting pump rod according to claim 1 is characterized in that: The impurity removal sleeve (3) is in the shape of a truncated cone.

Images