CN213016266U - Sucker rod disjointing device - Google Patents
Sucker rod disjointing device Download PDFInfo
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- CN213016266U CN213016266U CN202021707801.9U CN202021707801U CN213016266U CN 213016266 U CN213016266 U CN 213016266U CN 202021707801 U CN202021707801 U CN 202021707801U CN 213016266 U CN213016266 U CN 213016266U
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Abstract
The utility model relates to a sucker rod disjointing device, which comprises an upper latch head, an outer sleeve body, a guide body, two control balls, a spring and a lower joint; the guide body is inserted into the middle small-diameter circular hole section of the outer sleeve body, the two control balls are embedded into the ball hole of the guide body, and the parts extending out of the two ends of the ball hole are respectively in limit guide fit with the two guide grooves in the outer sleeve body; the upper end part of the lower joint is in threaded connection with the large-diameter circular hole section at the lower part of the outer sleeve body; the spring is tightly pressed between the upper end of the lower joint and the lower end of the guide body; the upper bolt head is inserted into the inner cavity hole of the outer sleeve body; the diameter-expanding shoulder section of the upper latch head is limited below the special-shaped hole section of the outer sleeve body in a 90-degree dislocation mode relative to the special-shaped hole section of the outer sleeve body, and the end part of the diameter-expanding shoulder section is in contact fit with the groove at the upper end of the guide body, so that the upper latch head and the outer sleeve body form locking connection. The disjointing device prevents the rod pump from being smoothly separated after the pump is clamped.
Description
Technical Field
The utility model belongs to oil pumping well production engineering device field, concretely relates to sucker rod disjointing ware.
Background
The sucker rod disjointer is a key connecting structure between sucker rods. At present, the commonly used sucker rod disjointer is applied, and in the practical process, although a good production effect is obtained, the phenomenon that the rod pump cannot be separated from the disjointer is also frequently generated. Great inconvenience is brought to workover operation, and the workover cost is increased.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's weak point, provide one kind and can avoid behind the card pump the rod pump can not break away from smoothly to can reduce workover operation cost and shorten operation cycle's sucker rod disjointing ware.
The utility model discloses a solve the technical scheme who above-mentioned technical problem took and be:
the utility model provides a sucker rod disjointing ware which characterized in that: comprises an upper bolt head, an outer sleeve body, a guide body, two control balls, a spring and a lower joint;
the upper bolt head is composed of a large-diameter cylindrical section, a medium-diameter cylindrical section, a small-diameter cylindrical section and an expanding shoulder section with an oblong cross section, which are coaxially arranged from top to bottom, the end part of the expanding shoulder section is of a semicircular end structure, and an internal thread hole is arranged in the center of the large-diameter cylindrical section and is connected with the lower end of the sucker rod through internal threads;
the inner cavity hole of the outer sleeve body is composed of an upper large-diameter circular hole section, a special-shaped hole section with a long circular section, a middle small-diameter circular hole section and a lower large-diameter circular hole section which are coaxially and sequentially arranged from top to bottom; two spiral guide surfaces with consistent rotation directions are processed at the upper end of the special-shaped hole section, and the two spiral guide surfaces are arranged at an angle of 180 degrees; two guide grooves are symmetrically arranged on the hole wall of the middle small-diameter circular hole section; an internal thread is arranged on the lower large-diameter circular hole section;
the guide body is of a special-shaped cylinder structure, a groove is arranged at the upper end of the special-shaped cylinder, the shape of the groove is matched with the shape of the end part of the diameter-expanding shoulder-shaped section of the upper latch head, the upper ends of the two side parts of the groove are respectively provided with a spiral guide surface, and the rotation directions of the two spiral guide surfaces are consistent; a ball hole is arranged on the guide body along the radial direction;
the guide body is inserted into the middle small-diameter circular hole section of the outer sleeve body, the two control balls are embedded in the ball hole, and the parts of the two control balls extending out of the two ends of the ball hole are respectively in limiting guide fit with the two guide grooves; the upper end part of the lower joint is connected with the large-diameter circular hole section at the lower part of the outer sleeve body through threads, and the lower end part of the lower joint is provided with an external thread connected with the sucker rod; the spring is tightly pressed between the upper end of the lower joint and the lower end of the guide body; the middle-diameter cylindrical section, the small-diameter cylindrical section and the diameter-expanding shoulder-shaped section of the upper latch head are inserted into the inner cavity hole of the outer sleeve body from top to bottom; the diameter-expanding shoulder section of the upper latch head is limited below the special-shaped hole section of the outer sleeve body in a 90-degree dislocation mode relative to the special-shaped hole section of the outer sleeve body, and the end part of the diameter-expanding shoulder section is in contact fit with the groove at the upper end of the guide body, so that the upper latch head and the outer sleeve body form locking connection.
The utility model has the advantages and positive effect:
the utility model realizes self-alignment and locking of the upper bolt head in the pressing installation process through the pair of spiral guide surfaces in the outer sleeve body and the pair of spiral guide surfaces at the upper end of the guide body, and has the characteristics of convenient and fast installation; after the pump is clamped, the sucker rod string rotating forward by 90 degrees is lifted, so that the upper bolt head can be unlocked, the upper bolt head is smoothly lifted from the upper end of the outer sleeve body, the phenomenon that the rod pump cannot be smoothly separated after the pump is clamped is avoided, and the well repairing operation cost is reduced and the operation period is shortened.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of the upper latch head; 2a, a front view; 2b, A-A section view; 2c, top view;
FIG. 3 is a schematic structural view of the outer sleeve body; 3a, longitudinal section view; 3B, B-B section view; 3c, a perspective view;
fig. 4 is a perspective view of the guide body.
Detailed Description
The present invention will be described in further detail with reference to the following specific embodiments, which are illustrative only and not limiting, and the scope of the present invention should not be limited thereby.
The invention relates to a sucker rod disjointing device, please refer to fig. 1-4, the invention point is: comprises an upper bolt head 1, an outer sleeve body 2, a guide body 3, two control balls 4, a spring 5 and a lower joint 6.
The upper bolt head is composed of a large-diameter cylindrical section 1.1, a middle-diameter cylindrical section 1.2, a small-diameter cylindrical section 1.3 and an expanding shoulder section 1.4 with an oblong cross section, wherein the large-diameter cylindrical section, the middle-diameter cylindrical section and the small-diameter cylindrical section are coaxially arranged from top to bottom, the end part 1.4.1 of the expanding shoulder section is of a semicircular end head structure, and an internal threaded hole 1.1.1 is formed in the center of the large-diameter cylindrical section and is connected with the lower end of the sucker rod through internal threads.
The outer sleeve comprises an upper large-diameter circular hole section 2.1, a special-shaped hole section 2.2 with an oblong cross section, a middle small-diameter circular hole section 2.3 and a lower large-diameter circular hole section 2.4, wherein the inner cavity hole of the outer sleeve body is coaxial with and sequentially arranged from top to bottom, the shape of the special-shaped hole section is consistent with that of the diameter-expanding shoulder section of the upper latch head, the size of the diameter-expanding shoulder section is slightly larger than that of the diameter-expanding shoulder section, and a proper fit gap is reserved between the diameter-expanding shoulder section and the diameter-expanding shoulder section. Two spiral guide surfaces 2.5 with consistent rotation directions are processed at the upper end of the special-shaped hole section, and the two spiral guide surfaces are arranged at an angle of 180 degrees. Two guide grooves 2.3.1 are symmetrically arranged on the hole wall of the middle small-diameter circular hole section; an internal thread is arranged on the lower large-diameter circular hole section.
The guide body is of a special-shaped cylinder structure, the upper end of the special-shaped cylinder is provided with a groove 3.1, the shape of the groove is matched with the shape of the end part of the diameter-expanding shoulder-shaped section of the upper latch head, the upper ends of two side parts of the groove are respectively provided with a spiral guide surface 3.2, and the two spiral guide surfaces have the same rotating direction; a ball hole 3.3 is arranged in the radial direction on the guide body.
The guide body is inserted into the middle small-diameter circular hole section of the outer sleeve body, the two control balls are embedded in the ball hole, and the parts of the two control balls extending out of the two ends of the ball hole are respectively in limiting guide fit with the two guide grooves; the upper end part of the lower joint is connected with the large-diameter circular hole section at the lower part of the outer sleeve body through threads, and the lower end part of the lower joint is provided with an external thread connected with the sucker rod; the spring is tightly pressed between the upper end of the lower joint and the lower end of the guide body; the middle-diameter cylindrical section, the small-diameter cylindrical section and the diameter-expanding shoulder-shaped section of the upper latch head are inserted into the inner cavity hole of the outer sleeve body from top to bottom; the diameter-expanding shoulder section of the upper latch head is limited below the special-shaped hole section of the outer sleeve body in a 90-degree dislocation mode, and the end part of the diameter-expanding shoulder section is in contact fit with the groove at the upper end of the guide body, so that the upper latch head and the outer sleeve body form locking connection.
The installation process and the separation process of the sucker rod disjointing device are as follows:
the installation process is as follows: the two control balls are embedded into the ball holes on the guide body, and then the guide body and the two control balls are arranged from the lower end of the outer sleeve body, so that the exposed parts of the two control balls are respectively matched with the two guide grooves, and the guide body is limited to move axially and not rotate after being inserted into the inner cavity hole of the outer sleeve body; then the spring is loaded from the lower end of the outer sleeve body; then the upper end of the lower joint is screwed and connected in the large-diameter circular hole section at the lower part of the outer sleeve body; then an upper latch head is inserted from the upper end of the outer sleeve body, rated load is applied, and under the action of the spiral guide surfaces of the two guide bosses, the upper latch head automatically rotates to adjust the position, so that the diameter-expanding shoulder-shaped section of the upper latch head rotates to a position with the angle consistent with that of the special-shaped hole section of the inner cavity hole of the outer sleeve body and passes through the special-shaped hole section; at the moment, the semicircular end of the upper latch head is in pressing contact with the upper end of the guide body, the upper latch head continues to be pressed downwards, the upper latch head rotates 90 degrees under the guiding action of the spiral guide surfaces on the two sides of the upper end of the guide body, the semicircular end is inserted into the groove in the upper end of the guide body, and the diameter-expanding shoulder section of the upper latch head and the special-shaped hole section of the outer sleeve body are staggered by 90 degrees, so that locking matching is realized.
The pump rod separation process is as follows:
when the pump is blocked, the sucker rod column rotating forward by 90 degrees is lifted upwards, the semicircular end head of the upper latch head moves out of the groove along the spiral guide surfaces at the two sides of the upper end of the guide body, so that the diameter-expanding shoulder section of the upper latch head rotates to a position with the angle consistent with that of the special-shaped hole section of the outer sleeve body, the upper latch head can be smoothly separated from the inner part of the outer sleeve body, and the rod pump can be smoothly separated.
In conclusion, the sucker rod disjointing device has novel and reasonable structural design, effectively prevents the phenomenon of sawing the rod after the pump is blocked and during well repair operation, can reduce the well repair cost, improves the operation timeliness, and has good economic and social benefits.
Although the embodiments and figures of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the invention and the appended claims, and therefore, the scope of the invention is not limited to the disclosure of the embodiments and drawings.
Claims (1)
1. The utility model provides a sucker rod disjointing ware which characterized in that: comprises an upper bolt head, an outer sleeve body, a guide body, two control balls, a spring and a lower joint;
the upper bolt head is composed of a large-diameter cylindrical section, a medium-diameter cylindrical section, a small-diameter cylindrical section and an expanding shoulder section with an oblong cross section, which are coaxially arranged from top to bottom, the end part of the expanding shoulder section is of a semicircular end structure, and an internal thread hole is arranged in the center of the large-diameter cylindrical section and is connected with the lower end of the sucker rod through internal threads;
the inner cavity hole of the outer sleeve body is composed of an upper large-diameter circular hole section, a special-shaped hole section with a long circular section, a middle small-diameter circular hole section and a lower large-diameter circular hole section which are coaxially and sequentially arranged from top to bottom; two spiral guide surfaces with consistent rotation directions are processed at the upper end of the special-shaped hole section, and the two spiral guide surfaces are arranged at an angle of 180 degrees; two guide grooves are symmetrically arranged on the hole wall of the middle small-diameter circular hole section; an internal thread is arranged on the lower large-diameter circular hole section;
the guide body is of a special-shaped cylinder structure, a groove is arranged at the upper end of the special-shaped cylinder, the shape of the groove is matched with the shape of the end part of the diameter-expanding shoulder-shaped section of the upper latch head, the upper ends of the two side parts of the groove are respectively provided with a spiral guide surface, and the rotation directions of the two spiral guide surfaces are consistent; a ball hole is arranged on the guide body along the radial direction;
the guide body is inserted into the middle small-diameter circular hole section of the outer sleeve body, the two control balls are embedded in the ball hole, and the parts of the two control balls extending out of the two ends of the ball hole are respectively in limiting guide fit with the two guide grooves; the upper end part of the lower joint is connected with the large-diameter circular hole section at the lower part of the outer sleeve body through threads, and the lower end part of the lower joint is provided with an external thread connected with the sucker rod; the spring is tightly pressed between the upper end of the lower joint and the lower end of the guide body; the middle-diameter cylindrical section, the small-diameter cylindrical section and the diameter-expanding shoulder-shaped section of the upper latch head are inserted into the inner cavity hole of the outer sleeve body from top to bottom; the diameter-expanding shoulder section of the upper latch head is limited below the special-shaped hole section of the outer sleeve body in a 90-degree dislocation mode relative to the special-shaped hole section of the outer sleeve body, and the end part of the diameter-expanding shoulder section is in contact fit with the groove at the upper end of the guide body, so that the upper latch head and the outer sleeve body form locking connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021707801.9U CN213016266U (en) | 2020-08-17 | 2020-08-17 | Sucker rod disjointing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021707801.9U CN213016266U (en) | 2020-08-17 | 2020-08-17 | Sucker rod disjointing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213016266U true CN213016266U (en) | 2021-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021707801.9U Active CN213016266U (en) | 2020-08-17 | 2020-08-17 | Sucker rod disjointing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213016266U (en) |
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2020
- 2020-08-17 CN CN202021707801.9U patent/CN213016266U/en active Active
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