CN213980720U - Oil pipe anchor with firm anchoring - Google Patents
Oil pipe anchor with firm anchoring Download PDFInfo
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- CN213980720U CN213980720U CN202022480478.2U CN202022480478U CN213980720U CN 213980720 U CN213980720 U CN 213980720U CN 202022480478 U CN202022480478 U CN 202022480478U CN 213980720 U CN213980720 U CN 213980720U
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- anchoring
- spring
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Abstract
A tubing anchor with firm anchoring. Relates to the technical field of oil field drilling tools. There is the oil pipe internal thread on the upper portion of inner tube, there is the oil pipe external screw thread the lower part of inner tube, inner tube upper portion is equipped with the centrum, centrum internal diameter is connected with inner tube external diameter clearance fit, be equipped with shear pin and interior union coupling on the centrum, the outer conical surface of cone and the interior conical surface cooperation of slips, the forked tail tooth of slips inserts in the dovetail of cone, terminal surface is contradicted with the upper end face of propelling sleeve under the slips, the inner tube lower part is equipped with the support ring, the support ring excircle is connected with the hole clearance fit that impels the cover, be equipped with the spring between support ring up end and the terminal surface of propelling sleeve hole. The utility model discloses following beneficial effect has: the utility model discloses a with the spring compression energy storage during the assembly, through the pressure in the tubular column in the pit, open the constraint condition of spring, the energy that the spring was saved is released, accomplishes the anchoring and can keep the anchoring power, and the anchoring is firm, avoids normal operation and need suppress the process of card anchoring, labour saving and time saving, and the operation is fast.
Description
The technical field is as follows:
the utility model belongs to the technical field of the oil field drilling tool technique and specifically relates to a firm oil pipe anchor of anchoring.
Background art:
when an oil well pumps oil, the oil pipe uses a tubing anchor for fixing the oil pipe and preventing the liquid column load from alternately acting on the oil pipe to stretch out and draw back, and when some oil-water well process construction is carried out, the tubing anchor is connected to a tool in order to prevent downhole tools such as a packer and the like from being damaged due to the movement of the tubing string. However, in order to prevent the tubing anchor from being anchored halfway during the process of going down the well, the conventional tubing anchor locks the starting device by using the pin, and the tubing anchor can be started to anchor the tubing anchor only by pressing the pin into the tubing to cut the pin after going down the well. Therefore, the existing oil pipe anchor needs a pressing device, construction cost and construction time are increased, and construction procedures are increased.
The utility model has the following contents:
in order to solve the problem, the utility model provides a firm oil pipe anchor of anchoring.
The technical scheme of the utility model is that: an oil pipe anchor with firm anchoring comprises an inner pipe, wherein the upper part of the inner pipe is provided with an oil pipe internal thread, the lower part of the inner pipe is provided with an oil pipe external thread, the upper part of the inner pipe is provided with a cone, the inner diameter of the cone is in clearance fit connection with the outer diameter of the inner pipe, a shearing pin is arranged on the cone and is connected with the inner pipe, the outer conical surface of the cone is matched with the inner conical surface of a slip, dovetail teeth of the slip are inserted into a dovetail groove of the cone, the lower end surface of the slip is abutted against the upper end surface of a propelling sleeve, the lower part of the inner pipe is provided with a support ring, the outer circle of the support ring is in clearance fit connection with an inner hole of the propelling sleeve, and a spring is arranged between the upper end surface of the support ring and the end surface of the inner hole of the propelling sleeve;
the support ring is transversely provided with a step hole, a piston is connected in the step hole in a clearance fit manner through a sealing ring, a plunger at the front end of the piston extends into a small hole at the outer side of the step hole, a hole is formed in the corresponding position of the propelling sleeve outside the plunger, a pin shaft is connected in the hole in a transition fit manner, and the pin shaft simultaneously extends into the small hole of the step hole and is abutted against the plunger.
And a distance exists between the outer end face of the piston and the step of the step hole, and the distance is equal to the distance between the outer end face of the plunger and the outer circle of the support ring.
The upper part of the inner pipe is provided with a step shaft, the upper part of the centrum is provided with a mounting hole, the mounting hole is in clearance fit connection with the step shaft, a distance exists between the bottom surface of the mounting hole and the lower end surface of the step shaft, and the distance is larger than the distance of axial movement when the slips are contracted from the maximum diameter to the minimum diameter during anchoring.
The spring is in a compressed state when in an installation position, and when the slips move outwards and are anchored on the inner wall of the sleeve after the pin shaft is pushed out of the support ring by the piston and the plunger, the spring is still in a compressed state.
The utility model discloses following beneficial effect has: the utility model discloses a with the spring compression energy storage during the assembly, through the pressure in the tubular column in the pit, open the constraint condition of spring, the energy that the spring was saved is released, accomplishes the anchoring and can keep the anchoring power, and the anchoring is firm, avoids normal operation and need suppress the process of card anchoring, labour saving and time saving, and the operation is fast.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of FIG. A-A;
FIG. 3 is a schematic structural diagram of the anchoring of the present invention;
fig. 4 is a schematic structural diagram of the anchor releasing device of the present invention.
In the figure, 1-an inner pipe, 2-a cone, 3-a slip, 4-a spring, 5-a propelling sleeve, 6-a pin shaft, 7-a piston, 8-a step hole, 9-a mounting hole, 10-a step shaft, 11-a shearing pin, 12-a dovetail groove, 13-a support ring and 14-a plunger.
The specific implementation mode is as follows:
the present invention will be further explained with reference to the accompanying drawings:
as shown in fig. 1 and fig. 2-4, the firmly anchored tubing anchor comprises an inner tube 1, wherein the upper part of the inner tube 1 is provided with an inner thread of the tubing, the lower part of the inner tube 1 is provided with an outer thread of the tubing, the upper part of the inner tube 1 is provided with a cone 2, the inner diameter of the cone 2 is in clearance fit connection with the outer diameter of the inner tube 1, the cone 2 is provided with a shear pin 11 which is connected with the inner tube 1, the outer conical surface of the cone 2 is matched with the inner conical surface of a slip 3, dovetail teeth of the slip 3 are inserted into dovetail grooves 12 of the cone 2, the lower end surface of the slip 3 is abutted against the upper end surface of a propelling sleeve 5, the lower part of the inner tube 1 is provided with a support ring 13, the outer circle of the support ring 13 is in clearance fit connection with an inner hole of the propelling sleeve 5, and a spring 4 is arranged between the upper end surface of the support ring 13 and the end surface of the inner hole of the propelling sleeve 5;
When the piston 7 is pushed to the outer side by internal pressure, the plunger 14 just pushes the pin shaft 6 out of the support ring 13, and the axial constraint between the pushing sleeve 5 and the support ring 13 as well as between the pushing sleeve and the inner pipe 1 is released.
1 upper portion of inner tube is equipped with step axle 10, 2 upper portions of centrum are equipped with mounting hole 9, mounting hole 9 is connected with step axle 10 clearance fit, there is one section distance between 9 bottom surfaces of mounting hole and step axle 10's the lower terminal surface, this distance is greater than the distance of axial displacement when 3 major diameter shrink to the minimum diameter state of slips from the anchoring, when the deblocking, 3 of slips go upward, still have the space between 9 bottom surfaces of mounting hole and the step axle 10 of centrum 2, prevent that the deblocking is incomplete, through preventing that the centrum from dropping.
Spring 4 is the compression state when the installation position, after round pin axle 6 is pushed out support ring 13 by piston 7 and plunger 14, when slips 3 outwards moved the anchoring at the inside wall of casing, spring 4 still is the compression state, and when the installation, spring 4 was compressed, and the degree of compression is: the pin shaft 6 is pushed out of the support ring 13 by the pressure in the pipe column, the axial constraint of the pushing sleeve 5 is relieved, the spring 4 is unfolded upwards to push the slips 3, the slips 3 move upwards and outwards along the conical surface of the cone 2 and the dovetail groove 12, the slips 3 are anchored on the inner wall of the sleeve, and at the moment, the spring 4 is still in a compressed state to keep the anchoring force of the slips 3.
When going into the well, the utility model discloses install on the oil-well pump, go into in the well along with the oil pumping tubular column.
When the oil well pump works, the pressure in the pipe column rises, when the piston 7 is pushed to the outside by the internal pressure, the plunger 14 just pushes the pin shaft 6 out of the support ring 13, the axial constraint between the push sleeve 5 and the support ring 13 as well as between the push sleeve and the inner pipe 1 is relieved, the spring 4 is unfolded upwards to push the slip 3, the slip 3 moves upwards and outwards along the conical surface of the cone 2 and the dovetail groove 12, the slip 3 is anchored on the inner wall of the casing, at the moment, the spring 4 is still in a compressed state to maintain the anchoring force of the slip 3, when the sealing is released, the pipe column is lifted, the shearing pin 11 is broken, the axial constraint of the cone 2 is relieved, the cone 2 moves upwards, the slip 3 retracts, and the sealing-releasing operation is completed.
The utility model discloses a with the spring compression energy storage during the assembly, through the pressure in the tubular column in the pit, open the constraint condition of spring, the energy that the spring was saved is released, accomplishes the anchoring and can keep the anchoring power, and the anchoring is firm, avoids normal operation and need suppress the process of card anchoring, labour saving and time saving, and the operation is fast.
Claims (4)
1. A firmly anchored tubing anchor comprising an inner tube (1), characterized in that: the upper part of the inner pipe (1) is provided with an oil pipe internal thread, the lower part of the inner pipe (1) is provided with an oil pipe external thread, the upper part of the inner pipe (1) is provided with a cone (2), the inner diameter of the cone (2) is in clearance fit connection with the outer diameter of the inner pipe (1), the cone (2) is provided with a shearing pin (11) which is connected with the inner pipe (1), the outer conical surface of the cone (2) is matched with the inner conical surface of a slip (3), the dovetail teeth of the slip (3) are inserted into a dovetail groove (12) of the cone (2), the lower end surface of the slip (3) is abutted against the upper end surface of a propelling sleeve (5), the lower part of the inner pipe (1) is provided with a support ring (13), the excircle of the support ring (13) is in clearance fit connection with the inner hole of the propelling sleeve (5), and a spring (4) is arranged between the upper end surface of the support ring (13) and the inner hole of the propelling sleeve (5);
the supporting ring (13) is transversely provided with a step hole (8), the step hole (8) is internally connected with a piston (7) through a sealing ring in a clearance fit manner, a plunger (14) at the front end of the piston (7) extends into a small hole in the step hole (8) towards the outer side, the plunger (14) is externally provided with a hole at the corresponding position of the propelling sleeve (5), the hole is internally connected with a pin shaft (6) in a transition fit manner, and the pin shaft (6) simultaneously extends into the small hole in the step hole (8) and is abutted to the plunger (14).
2. A securely anchored tubing anchor as defined in claim 1, wherein: a distance is reserved between the outer end face of the piston (7) and the step of the step hole (8), and the distance is equal to the distance between the outer end face of the plunger (14) and the outer circle of the support ring (13).
3. A securely anchored tubing anchor as defined in claim 1, wherein: inner tube (1) upper portion is equipped with step axle (10), and centrum (2) upper portion is equipped with mounting hole (9), and mounting hole (9) are connected with step axle (10) clearance fit, have one section distance between the lower terminal surface of mounting hole (9) bottom surface and step axle (10), and this distance is greater than slips (3) from the distance of maximum diameter shrinkage axial displacement when anchoring to minimum diameter state.
4. A securely anchored tubing anchor as defined in claim 1, wherein: the spring (4) is in a compressed state when in an installation position, and after the pin shaft (6) is pushed out of the support ring (13) by the piston (7) and the plunger (14), the slips (3) move outwards and are anchored on the inner wall of the casing, and the spring (4) is still in the compressed state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022480478.2U CN213980720U (en) | 2020-10-30 | 2020-10-30 | Oil pipe anchor with firm anchoring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022480478.2U CN213980720U (en) | 2020-10-30 | 2020-10-30 | Oil pipe anchor with firm anchoring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213980720U true CN213980720U (en) | 2021-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022480478.2U Active CN213980720U (en) | 2020-10-30 | 2020-10-30 | Oil pipe anchor with firm anchoring |
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| CN (1) | CN213980720U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115506738A (en) * | 2022-11-23 | 2022-12-23 | 大庆市璞庆钻采设备制造有限公司 | Hydraulic anchor for oil field downhole operation |
-
2020
- 2020-10-30 CN CN202022480478.2U patent/CN213980720U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115506738A (en) * | 2022-11-23 | 2022-12-23 | 大庆市璞庆钻采设备制造有限公司 | Hydraulic anchor for oil field downhole operation |
| CN115506738B (en) * | 2022-11-23 | 2023-02-10 | 大庆市璞庆钻采设备制造有限公司 | Hydraulic anchor for oil field downhole operation |
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