CN212563142U - Small casing pipe slip-free hanger - Google Patents
Small casing pipe slip-free hanger Download PDFInfo
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- CN212563142U CN212563142U CN202120137108.0U CN202120137108U CN212563142U CN 212563142 U CN212563142 U CN 212563142U CN 202120137108 U CN202120137108 U CN 202120137108U CN 212563142 U CN212563142 U CN 212563142U
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- elastic claw
- ball seat
- ring
- fixedly connected
- wall
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Abstract
The utility model discloses a small casing pipe slip-free hanger, which relates to the technical field of petroleum machinery and comprises a service tool and a hanging tool, wherein the service tool comprises an upper joint, a piston, an elastic claw, a steel ball, a ball seat, a support ring and a back cap, the elastic claw and the ball seat are both of cylindrical structures, and the lower part of the elastic claw is provided with a plurality of U-shaped openings; the upper end of the elastic claw is fixedly connected with the upper joint, the piston is sleeved between the upper joint and the elastic claw in a sliding manner, the ball seat is in sliding fit with the inner cavity of the elastic claw, and the upper part of the ball seat is fixedly connected with the elastic claw through a shearing pin; an inner step seat for limiting the sliding of the ball seat is arranged on the inner wall of the elastic claw; the support ring and the back cap are nested between the elastic claw and the lower end of the ball seat side by side, and the back cap is fixedly connected with the ball seat; the steel ball is movably arranged in the inner cavity of the elastic claw and is positioned above the ball seat; the device is a slip-free hanger and is suitable for a small-casing sidetrack oil well; the device adopts high-pressure liquid to directly press the releasing gadget after being seated and sealed, thereby improving the reliability of the releasing gadget.
Description
Technical Field
The utility model relates to the technical field of petroleum machinery, concretely relates to little sleeve pipe does not have slips hanger.
Background
The hanger is one of indispensable mechanical sand control tools of oil recovery in the pit, and the hanger that now commonly uses mostly has slips anchoring mechanism, but it is not suitable for the sidetracking oil well of little sleeve pipe, mainly shows in two aspects: 1. the drift diameter of the remained well is too small, which not only influences the oil output, but also is not beneficial to the subsequent sand washing operation. 2. The structure is complicated, and the fishing is difficult. Once the fishing is unsuccessful, the slip mechanism is very easy to cause the complication of post-treatment.
Therefore, it is necessary to develop a hanger suitable for a small casing sidetrack oil well.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a no slips hanger suitable for little sheathed tube to the defect that prior art exists exactly.
The technical scheme of the utility model is that: a small casing pipe slip-free hanger comprises a service tool and a hanging tool, wherein the service tool comprises an upper joint, a piston, an elastic claw, a steel ball, a ball seat, a support ring and a back cap, the elastic claw and the ball seat are of cylindrical structures, and a plurality of U-shaped openings are formed in the lower portion of the elastic claw; the upper end of the elastic claw is fixedly connected with the upper joint, the piston is sleeved between the upper joint and the elastic claw in a sliding manner, the ball seat is in sliding fit with the inner cavity of the elastic claw, and the upper part of the ball seat is fixedly connected with the elastic claw through a shearing pin; an inner step seat for limiting the sliding of the ball seat is arranged on the inner wall of the elastic claw; the support ring and the back cap are nested between the elastic claw and the lower end of the ball seat side by side, and the back cap is fixedly connected with the ball seat; the steel ball is movably arranged in the inner cavity of the elastic claw and is positioned above the ball seat, and a stop lever for stopping the steel ball is fixedly arranged at the upper end of the inner cavity of the elastic claw;
the hanging tool comprises a pressing ring, a deblocking fishing head, a central pipe, a locking ring, a protective sleeve, a rubber barrel and a blocking cap, the upper end of an inner cavity of the central pipe is fixedly connected with the lower end of an elastic claw through threads, the upper part of the outer wall of the central pipe is provided with downwards inclined sawtooth threads and a plurality of spline grooves, the lower part of the deblocking fishing head is matched with the spline grooves and is in sliding connection with the sawtooth threads and the spline grooves, and the outer diameter of the lower end of the deblocking fishing head is larger than the outer diameter of; the deblocking fishing head is in sliding fit with the inner cavity of the compression ring and fixedly connected with the compression ring through a shear pin; the upper part of the compression ring is slidably sleeved between the upper joint and the elastic claw; the jacket is sleeved outside the central tube, the upper end of the jacket is fixedly connected with the lower end of the pressing ring, an annular groove is formed in the inner wall of the jacket, the locking ring is arranged in the annular groove, and the inner wall of the locking ring is meshed with the sawtooth threads; the rubber cylinders are sleeved outside the central tube below the sheath side by side, and a spacer ring is arranged between the rubber cylinders; the stop cap is fixedly sleeved on the outer side of the lower end of the central tube, and the upper end of the stop cap is in contact with the rubber tube.
Preferably, bosses are arranged on the inner sides of the lower end face of the sheath, the upper end face of the spacer ring and the upper end face of the blocking cap, and grooves matched with the bosses are arranged on the inner sides of the upper end face and the lower end face of the rubber cylinder.
Preferably, the rubber cylinders are provided with three groups.
Preferably, a plurality of groups of O-shaped sealing rings are nested on the inner wall and the outer wall of the piston.
Preferably, the upper part of the outer wall of the ball seat is provided with a plurality of groups of O-shaped sealing rings.
Preferably, the lower end of the inner cavity of each elastic claw is provided with an inner conical surface, and the outer wall of each support ring is provided with an outer conical surface matched with the inner conical surface.
Compared with the prior art, the utility model, have following advantage:
the device adopts high-pressure liquid to directly press the releasing gadget after being seated and sealed, thereby improving the reliability of the releasing gadget; the locking ring in the device is an elastic piece, the lower end of the deblocking fishing head props up the locking ring during deblocking, and the sheath and the locking ring are reset to complete deblocking under the action of the retraction force of the rubber cylinder, so that the success rate of deblocking and fishing of the device is greatly improved; the steel ball in the device is pre-thrown near the ball seat, and the stop lever can prevent the steel ball from rolling out of the hanger; a plurality of U-shaped openings are processed at the lower part of the elastic claw in the device, and the U-shaped openings can be used as backwashing channels of the hanger and can also be used for ensuring that the elastic claw can be timely contracted to be completely separated from the connection with the central pipe when the elastic claw is pressed and released.
Drawings
FIG. 1 is a schematic sectional view of the present invention;
fig. 2 is an enlarged view of a point a in fig. 1.
In the figure: 1. the sealing ring comprises an upper joint, 2, a piston, 3, an elastic claw, 301, an inner step seat, 302, an inner conical surface, 4, a steel ball, 5, a ball seat, 6, a support ring, 601, an outer conical surface, 7, a back cap, 8, a stop lever, 9, a pressure ring, 10, an unsealing fishing head, 11, a central pipe, 1101, a sawtooth thread, 1102, a spline groove, 12, a locking ring, 13, a sheath, 1301, an annular groove, 14, a rubber sleeve, 15, a spacer ring, 16, a stop cap, 17 and an O-shaped sealing ring.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Example one
Referring to fig. 1-2, the small casing pipe slip-free hanger comprises a service tool and a hanging tool, wherein the service tool comprises an upper joint 1, a piston 2, an elastic claw 3, a steel ball 4, a ball seat 5, a support ring 6 and a back cap 7, the elastic claw 3 and the ball seat 5 are of cylindrical structures, and a plurality of U-shaped openings are formed in the lower portion of the elastic claw 3; the upper end of the elastic claw 3 is fixedly connected with the upper joint 1, the piston 2 is slidably sleeved between the upper joint 1 and the elastic claw 3, and a plurality of groups of O-shaped sealing rings 17 are nested on the inner wall and the outer wall of the piston 2; the ball seat 5 is in sliding fit with the inner cavity of the elastic claw 3, a plurality of groups of O-shaped sealing rings 17 are arranged on the upper part of the outer wall of the ball seat 5, and the upper part of the ball seat 5 is fixedly connected with the elastic claw 3 through a shearing pin; an inner step seat 301 for limiting the sliding of the ball seat 5 is arranged on the inner wall of the elastic claw 3; the support ring 6 and the back cap 7 are nested between the elastic claw 3 and the lower end of the ball seat 5 side by side, and the back cap 7 is fixedly connected with the ball seat 5; the steel ball 4 is movably arranged in the inner cavity of the elastic claw 3 and is positioned above the ball seat 5, and the upper end of the inner cavity of the elastic claw 3 is fixedly provided with a stop lever 8 for stopping the steel ball 4.
The hanging tool comprises a pressing ring 9, an unlocking fishing head 10, a central pipe 11, a locking ring 12, a sheath 13, a rubber cylinder 14 and a blocking cap 16, the upper end of the inner cavity of the central pipe 11 is fixedly connected with the lower end of the elastic claw 3 through threads, the upper part of the outer wall of the central pipe 11 is provided with downwards inclined sawtooth threads 1101 and a plurality of spline grooves 1102, the lower part of the unlocking fishing head 10 is matched with the spline grooves 1102 and is in sliding connection with the spline grooves 1102, and the outer diameter of the lower end of the unlocking fishing head 10 is larger than the outer diameter of the; the deblocking fishing head 10 is in sliding fit with the inner cavity of the compression ring 9, and the deblocking fishing head and the compression ring are fixedly connected through a shear pin; the upper part of the compression ring 9 is slidably sleeved between the upper joint 1 and the elastic claw 3; the jacket 13 is sleeved outside the central tube 11, the upper end of the jacket is fixedly connected with the lower end of the pressing ring 9, the inner wall of the jacket 13 is provided with an annular groove 1301, the locking ring 12 is arranged in the annular groove 1301, and the inner wall of the locking ring is meshed and matched with the sawtooth threads 1101; a plurality of rubber cylinders 14 are sleeved outside the central tube 11 below the sheath 13 side by side, and a spacer ring 15 is arranged between the rubber cylinders 14; the stop cap 16 is fixedly sleeved on the outer side of the lower end of the central tube 11, and the upper end of the stop cap is in contact with the rubber tube 14.
When the utility model is used, firstly, the oil pipe is butted with the upper joint 1, the sieve pipe is butted with the lower end of the central pipe 11, and then the sieve pipe is sent into a well; after the hanger carries the sieve tube to a specified position in the well, high-pressure liquid is conveyed into the well through an oil pipe; high-pressure liquid flows through the upper connector 1, passes through a small hole at the leftmost end of the elastic claw 3 to push the piston 2 and the pressing ring 9 to downwards shear the shearing pin, the pressing ring 9 drives the locking ring 12 and the sheath 13 to continuously move forwards and extrude the rubber cylinder 14, and the rubber cylinder 14 expands to seal the annular space; the pressing is continued until the shearing pin between the ball seat 5 and the elastic claw 3 is sheared off, the ball seat 5, the support ring 6 and the back cap 7 rapidly descend together, and the elastic claw 3 is rapidly contracted to be separated from the central tube 11; after the service tool is separated from the hanging tool, the oil lifting pipe lifts the service tool out of the well; due to the locking action of the locking ring 12, the present hanger is firmly secured in the bushing in which it is located. To want the deblocking to salvage, only need to insert in deblocking fishing head 10 through clamping ring 9 with corresponding fishing spear, lift by force and can accomplish the deblocking and salvage.
The device adopts high-pressure liquid to directly press the releasing gadget after being seated and sealed, thereby improving the reliability of the releasing gadget; the locking ring 12 in the device is an elastic piece, the lower end of the deblocking fishing head 10 props up the locking ring 12 during deblocking, and the sheath 13 and the locking ring 12 are reset to complete deblocking under the action of the retraction force of the rubber cylinder 14, so that the success rate of deblocking and fishing of the device is greatly improved; the steel ball 4 in the device is pre-thrown near the ball seat 5, and the stop lever 8 can prevent the steel ball from rolling out of the hanger; a plurality of U-shaped openings are processed at the lower part of the elastic claw 3 in the device, which can be used as a backwashing channel of the hanger and can ensure that the elastic claw 3 can contract in time to be completely separated from the connection with the central pipe 11 when the elastic claw is pressed and released.
Example two
As an optimized embodiment of the present invention, the structure and the quantity of the rubber tube 14 are optimized on the basis of the first embodiment, specifically as follows: bosses are arranged on the lower end face of the sheath 13, the upper end face and the lower end face of the spacer ring 15 and the inner side of the upper end face of the stop cap 16, grooves matched with the bosses are arranged on the inner sides of the upper end face and the lower end face of the rubber cylinder 14, and the bosses can be embedded into each other during setting, so that the anchoring fastening force of the rubber cylinder 14 is increased, and the setting reliability of the hanger is ensured; in addition, the rubber cylinders 14 of the embodiment are provided with three groups, and the anchoring property and the sealing property of the hanger are more reliable by increasing the number of the rubber cylinders 14.
EXAMPLE III
As a preferred embodiment of the present invention, the structure of the elastic claw 3 and the support ring 6 is optimized on the basis of the second embodiment, specifically: referring to fig. 2, the inner cavity lower end of the elastic claw 3 is provided with an inner conical surface 302, and the outer wall of the support ring 6 is provided with an outer conical surface 601 matched with the inner conical surface 302; the support ring 6 and the elastic claw 3 in the embodiment adopt conical surface matching, and the arrangement improves the reliability of quick releasing of the device when liquid is pressurized.
The present invention is not limited to the above-described embodiments, and various changes can be made within the knowledge range of those skilled in the art without departing from the spirit of the present invention, and the changed contents still belong to the protection scope of the present invention.
Claims (6)
1. A small casing pipe slips-free hanger is characterized in that: the device comprises a service tool and a hanging tool, wherein the service tool comprises an upper joint, a piston, an elastic claw, a steel ball, a ball seat, a support ring and a back cap, the elastic claw and the ball seat are of cylindrical structures, and a plurality of U-shaped openings are formed in the lower part of the elastic claw; the upper end of the elastic claw is fixedly connected with the upper joint, the piston is sleeved between the upper joint and the elastic claw in a sliding manner, the ball seat is in sliding fit with the inner cavity of the elastic claw, and the upper part of the ball seat is fixedly connected with the elastic claw through a shearing pin; an inner step seat for limiting the sliding of the ball seat is arranged on the inner wall of the elastic claw; the support ring and the back cap are nested between the elastic claw and the lower end of the ball seat side by side, and the back cap is fixedly connected with the ball seat; the steel ball is movably arranged in the inner cavity of the elastic claw and is positioned above the ball seat, and a stop lever for stopping the steel ball is fixedly arranged at the upper end of the inner cavity of the elastic claw;
the hanging tool comprises a pressing ring, a deblocking fishing head, a central pipe, a locking ring, a protective sleeve, a rubber barrel and a blocking cap, the upper end of an inner cavity of the central pipe is fixedly connected with the lower end of an elastic claw through threads, the upper part of the outer wall of the central pipe is provided with downwards inclined sawtooth threads and a plurality of spline grooves, the lower part of the deblocking fishing head is matched with the spline grooves and is in sliding connection with the sawtooth threads and the spline grooves, and the outer diameter of the lower end of the deblocking fishing head is larger than the outer diameter of; the deblocking fishing head is in sliding fit with the inner cavity of the compression ring and fixedly connected with the compression ring through a shear pin; the upper part of the compression ring is slidably sleeved between the upper joint and the elastic claw; the jacket is sleeved outside the central tube, the upper end of the jacket is fixedly connected with the lower end of the pressure ring, an annular groove is formed in the inner wall of the jacket, the lock ring is arranged in the annular groove, and the inner wall of the lock ring is meshed with the sawtooth threads; the rubber cylinders are sleeved outside the central tube below the sheath side by side, and a spacer ring is arranged between the rubber cylinders; the stop cap is fixedly sleeved on the outer side of the lower end of the central tube, and the upper end of the stop cap is in contact with the rubber tube.
2. The small casing slip-free hanger of claim 1, wherein: bosses are arranged on the inner sides of the lower end face of the sheath, the upper end face and the lower end face of the spacer ring and the upper end face of the blocking cap, and grooves matched with the bosses are arranged on the inner sides of the upper end face and the lower end face of the rubber cylinder.
3. A small casing slip-free hanger as claimed in claim 1 or 2, wherein: the rubber cylinder is provided with three groups.
4. The small casing slip-free hanger of claim 1, wherein: and a plurality of groups of O-shaped sealing rings are nested on the inner wall and the outer wall of the piston.
5. The small casing slip-free hanger of claim 1, wherein: and a plurality of groups of O-shaped sealing rings are arranged on the upper part of the outer wall of the ball seat.
6. The small casing slip-free hanger of claim 1, wherein: the lower end of the inner cavity of the elastic claw is provided with an inner conical surface, and the outer wall of the support ring is provided with an outer conical surface matched with the inner conical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120137108.0U CN212563142U (en) | 2021-01-19 | 2021-01-19 | Small casing pipe slip-free hanger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120137108.0U CN212563142U (en) | 2021-01-19 | 2021-01-19 | Small casing pipe slip-free hanger |
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| Publication Number | Publication Date |
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| CN212563142U true CN212563142U (en) | 2021-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120137108.0U Active CN212563142U (en) | 2021-01-19 | 2021-01-19 | Small casing pipe slip-free hanger |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113202437A (en) * | 2021-06-02 | 2021-08-03 | 中石化石油工程技术服务有限公司 | High antitorque cutting ferrule of preventing drags for integration instrument |
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2021
- 2021-01-19 CN CN202120137108.0U patent/CN212563142U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113202437A (en) * | 2021-06-02 | 2021-08-03 | 中石化石油工程技术服务有限公司 | High antitorque cutting ferrule of preventing drags for integration instrument |
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