CN212154684U - Centering sucker rod coupling - Google Patents
Centering sucker rod coupling Download PDFInfo
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- CN212154684U CN212154684U CN202020817224.2U CN202020817224U CN212154684U CN 212154684 U CN212154684 U CN 212154684U CN 202020817224 U CN202020817224 U CN 202020817224U CN 212154684 U CN212154684 U CN 212154684U
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- coupling
- centering
- sucker rod
- length
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Abstract
A sucker rod coupling is centered, an internal thread of a sucker rod is arranged in the coupling, the coupling is made of metal, the length of the coupling is lengthened by 20-60mm on the basis of standard length, a groove section is arranged outside the coupling, the groove section is arranged in the middle of the coupling, a pipe wrench installation plane is arranged outside the upper portion of the coupling, a centering sleeve is hot-cast in the groove section, the length from the upper end of the centering sleeve to the upper end of the coupling is equal to the length from the lower end of the centering sleeve to the lower end of the coupling, 3-6 centering ribs are arranged outside the centering sleeve, two ends of each centering rib are provided with chamfers, the outer side of each centering rib is arc-shaped, the circular outer diameter formed by connecting lines outside the 3-6 centering ribs is smaller than the inner diameter of a matched oil pipe by 3-5mm, the centering sleeve is made of nonmetal, and only the length of the standard sucker rod coupling is lengthened by 20-60mm, and the sucker rod centralizer is formed by casting the centralizing sleeve, the structure is simple, the production cost is low, the use is convenient, the working period of the oil well can be prolonged, and the economic benefit of the oil well is improved.
Description
Technical Field
The utility model belongs to the equipment of oil field oil pumping usefulness is a centralizing sucker rod coupling.
Background
In an oil field oil pumping system, a sucker rod and an oil pipe have relative contact motion, and friction is inevitably generated between the sucker rod and the oil pipe, so that the abrasion of the sucker rod and the oil pipe is inevitable. In particular, the sucker rod is easy to bend in an oil pipe of a deep well and an inclined well, the problem that the sucker rod eccentrically wears the oil pipe seriously occurs, the oil pipe and the sucker rod cannot be used after eccentric wear occurs, oil well operation is caused, the maintenance-free period of an oil well is short, the operation cost is increased, the consumption of a rod pipe is increased, the production stop time of the oil well is long, and the yield of crude oil is reduced. In the oil extraction technology, a sucker rod centralizer is often adopted to solve the problem of eccentric wear of an oil pipe and a sucker rod. The existing sucker rod centralizer has more types, but has poor eccentric wear prevention effect, complex structure, high cost and processing cost, inconvenient use and troublesome installation when going into the well.
Disclosure of Invention
The utility model aims at designing a righting sucker rod coupling, through the coupling of improving the sucker rod, make it have the function of righting, make the sucker rod be in oil pipe's position placed in the middle, prevent to produce wearing and tearing between sucker rod post and the oil pipe inner wall, prolong the life of sucker rod, reduce the oil well operation number of times to simple structure, convenient to use.
The purpose of the utility model is realized like this: the length of the coupling is lengthened by 20-60mm on the basis of standard length, a groove section is arranged outside the coupling, the groove section is positioned in the middle of the coupling, a pipe wrench installation plane is arranged outside the upper portion of the coupling, a centering sleeve is hot-cast in the groove section, the length from the upper end of the centering sleeve to the upper end of the coupling is equal to the length from the lower end of the centering sleeve to the lower end of the coupling, 3-6 centering ribs are arranged outside the centering sleeve, two ends of each centering rib are provided with chamfers, the outer side of each centering rib is arc-shaped, the circular outer diameter formed by connecting lines outside the 3-6 centering ribs is smaller than the inner diameter of a matched oil pipe by 3-5mm, and the centering sleeve is made of nonmetal.
The utility model has the advantages that: the sucker rod centralizer is formed by lengthening by 20-60mm on the basis of the length of a standard sucker rod coupling and casting a centralizing sleeve, has a centralizing function, can enable a sucker rod to be positioned at the middle position of an oil pipe, can prevent abrasion between a sucker rod string and the inner wall of the oil pipe, can prolong the service life of the sucker rod, reduces the operation times of an oil well, has a simple structure, low production cost and convenient use, is superior to the performance of the existing sucker rod centralizer, can prolong the working period of the oil well, and improves the economic benefit of the oil well.
Drawings
Fig. 1 is an assembly view of the present invention.
Fig. 2 is a side view of the present fig. 1.
Figure 3 is a cross-sectional view of the piece 2 of figure 1.
Detailed Description
Embodiments of the present invention will be described below with reference to the accompanying drawings.
The embodiment of the utility model is provided with a coupling 1, a sucker rod internal thread 1-3 is arranged inside the coupling 1, the specification of the sucker rod internal thread 1-3 is the same as the external thread of the sucker rod to be connected, the coupling 1 is made of metal, the mechanical property of the coupling 1 meets the requirement of BG7229, the length of the coupling 1 is lengthened by 20-60mm (generally lengthened by 30mm) on the basis of the standard length, a groove section 1-2 is arranged outside the coupling 1, the groove section 1-2 is positioned in the middle of the coupling 1, a pipe wrench installation plane 1-1 is arranged outside the upper part of the coupling 1, a centralizing sleeve 2 is cast in the groove section 1-2, the length from the upper end of the centralizing sleeve 2 to the upper end of the coupling 1 is equal to the length from the lower end of the centralizing sleeve 2 to the lower end of the coupling 1, 3-6 centralizing ribs 2-1 are arranged outside the centralizing sleeve 2, the two ends of the centering rib 2-1 are provided with chamfers, so that the centering rib can be conveniently lifted in an oil pipe and can prevent collision, the outer side of the centering rib 2-1 is arc-shaped, the circular outer diameter formed by connecting lines of the outer sides of the 3-6 centering ribs 2-1 is smaller than the inner diameter of the matched oil pipe by 3-5mm, so that the centering sleeve 2 can be lifted in the oil pipe with a certain deformation, the material of the centering sleeve 2 is nonmetal, and the inner wall of the oil pipe can be prevented from being abraded.
The utility model discloses play the back from the well and get rid of after and right the cover and recast and go up new right the cover and just can reuse, be convenient for restore.
Claims (1)
1. A sucker rod centering coupling comprises a coupling (1), a sucker rod internal thread (1-3) is arranged inside the coupling (1), the coupling (1) is made of metal, and the sucker rod centering coupling is characterized in that the length of the coupling (1) is lengthened by 20-60mm on the basis of standard length, a groove section (1-2) is arranged outside the coupling (1), the groove section (1-2) is positioned in the middle of the coupling (1), a pipe wrench installation plane (1-1) is arranged outside the upper part of the coupling (1), a centering sleeve (2) is hot-cast in the groove section (1-2), the length from the upper end of the centering sleeve (2) to the upper end of the coupling (1) is equal to the length from the lower end of the centering sleeve (2) to the lower end of the coupling (1), 3-6 centering ribs (2-1) are arranged outside the centering sleeve (2), two ends of the centering ribs (2-1) are provided with chamfers, the outer side of the righting rib (2-1) is arc-shaped, the circular outer diameter formed by the connecting lines of the outer sides of the 3-6 righting ribs (2-1) is 3-5mm smaller than the inner diameter of the matched oil pipe, and the righting sleeve (2) is made of nonmetal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020817224.2U CN212154684U (en) | 2020-05-17 | 2020-05-17 | Centering sucker rod coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020817224.2U CN212154684U (en) | 2020-05-17 | 2020-05-17 | Centering sucker rod coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212154684U true CN212154684U (en) | 2020-12-15 |
Family
ID=73707086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020817224.2U Active CN212154684U (en) | 2020-05-17 | 2020-05-17 | Centering sucker rod coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212154684U (en) |
-
2020
- 2020-05-17 CN CN202020817224.2U patent/CN212154684U/en active Active
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