CN211201872U - Tool capable of preventing upward movement - Google Patents

Abstract

The utility model discloses a prevent instrument that moves up, include: a barrel; one end of each of the two supporting arms is provided with a shaft pin hole, the other end of each of the two supporting arms is provided with an anti-skidding tooth, and the two supporting arms are detachably connected with the cylinder body at the same time; the upper spring is sleeved in the cylinder body and is arranged at one end of the supporting arm with the pin hole; one end of the compression key is provided with a boss, one end of the compression key, which is provided with the boss, is sleeved in the upper spring, and the other end of the compression key is tightly pressed with the supporting arm; the mandrel is a multi-step shaft body, and the outer diameter of one end, close to the supporting arm, of the mandrel is larger than that of the other end of the mandrel. Through fixing two support arms simultaneously at the mode of barrel, utilize the opening and shutting of spring, compression key and dabber control support arm, solved the poor problem of prior art linkage performance.

Description

Tool capable of preventing upward movement

Technical Field

The utility model relates to an oil pipe bores the workover field, especially relates to a prevent instrument that moves on.

Background

When the sliding sleeve is opened in steel wire operation, because the stratum energy is higher than the energy in the shaft at the same position, the stratum energy is instantaneously gushed into the shaft at the moment of opening the sliding sleeve, a reverse impact force is generated to the sliding sleeve opening tool, the impact force is often fast and violent, the sliding sleeve opening tool can be pushed out upwards for a long distance, and the tool is pushed to the top, so that the steel wire is easily damaged, and the operation accident is caused. In order to prevent the tool from impacting the top, the prior art adopts a shock type upward movement prevention tool which can prevent the tool from impacting the top and can release the tool from being blocked by itself when the tool is blocked on the inner wall of the oil pipe. However, the support arm and the cylinder body are independently connected, so that the upward movement prevention linkage performance is poor, and the support arm and the cylinder body cannot be clamped on the inner wall of the oil pipe in time; and in the practical application process, the support arm is easy to break due to the overlong support arm, so that objects fall in a well.

SUMMERY OF THE UTILITY MODEL

The utility model relates to a development an instrument of preventing shifting up, the adoption is fixed two support arms simultaneously at the mode of barrel, utilizes opening and shutting of spring, compression key and dabber control support arm, has solved the poor problem of prior art linkage performance.

The utility model provides a technical scheme does:

an anti-migration tool, comprising:

a barrel;

one end of each of the two supporting arms is provided with a shaft pin hole, the other end of each of the two supporting arms is provided with an anti-skidding tooth, and the two supporting arms are detachably connected with the cylinder body at the same time;

the upper spring is sleeved in the cylinder body and is arranged at one end of the supporting arm with the pin hole;

one end of the compression key is provided with a boss, one end of the compression key, which is provided with the boss, is sleeved in the upper spring, and the other end of the compression key is tightly pressed with the supporting arm;

the mandrel is a multi-step shaft body, and the outer diameter of one end, close to the supporting arm, of the mandrel is larger than that of the other end of the mandrel.

Preferably, one end of the mandrel close to the support arm is provided with a sliding groove, and the support arm can be folded in the sliding groove.

Preferably, the method further comprises the following steps:

and the limiting groove is a strip-shaped groove and is arranged at the other end of the mandrel.

Preferably, the method further comprises the following steps:

and the lower spring is sleeved on the middle section of the mandrel and used for providing elastic support for the mandrel.

Preferably, the method further comprises the following steps:

the lower pressing cover is a hollow cylinder, the outer diameter of the cylinder is variable, one end of the lower pressing cover can be sleeved into one end of the cylinder body and sleeved on the other end of the mandrel to limit the lower spring.

Preferably, the method further comprises the following steps:

and the limiting screw is an inner hexagonal flat head screw, can penetrate through the joint of the barrel and the lower gland and is embedded into the limiting groove, and is used for limiting the rotation of the mandrel and preventing the lower gland from being reversely buckled.

Preferably, the method further comprises the following steps:

and the lower joint is positioned at the other end of the lower gland, and one end of the lower joint is detachably connected with the other end of the mandrel.

Preferably, the method further comprises the following steps:

the upper gland is a hollow cylinder, the outer diameter of the cylinder is variable, and one end of the upper gland can be sleeved into the other end of the cylinder.

Preferably, the method further comprises the following steps:

and one end of the shock rod is sleeved in the upper gland, and the other end of the shock rod is sleeved in the barrel.

Preferably, the method further comprises the following steps:

and one end of the upper joint is detachably connected with the other end of the upper gland, and the other end of the upper joint is detachably connected with other tools for steel wire operation.

Beneficial effect:

1. the utility model designs and develops an anti-moving tool, which solves the problem of poor linkage performance in the prior art by fixing two supporting arms on a cylinder body at the same time and controlling the opening and closing of the supporting arms by using an upper spring, a compression key and a mandrel;

2. the elastic support and the limiting design are added at the two ends of the support arm, so that the overall performance is more reliable, the tool cannot be completely failed due to local damage, and the overall upward movement prevention effect is better;

3. the length of the supporting arm of the upward moving prevention tool is shortened, the thickness is thickened, and the safety of the upward moving prevention tool is higher in the using process.

Drawings

Fig. 1 is a schematic structural view of the tool for preventing upward movement according to the present invention.

Fig. 2 is a schematic structural view of the cylinder in the tool for preventing upward movement of the present invention.

Fig. 3 is a schematic structural view of the mandrel in the tool for preventing upward movement according to the present invention.

Fig. 4 is a schematic structural view of the support arm of the tool of the present invention.

Fig. 5 is a schematic structural view of the elastic cylindrical pin in the upward movement preventing tool of the present invention.

Detailed Description

The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.

The utility model provides an anti-moving tool, as shown in fig. 1 and fig. 4, a first supporting arm 302 and a second supporting arm 303 are fixed at the middle part of a cylinder body 100 at the same time, one end of the first supporting arm 302 and one end of the second supporting arm 303 are both provided with a shaft pin hole, and a shaft pin 301 can pass through the shaft pin hole; the other ends of the first support arm 302 and the second support arm 303 are both provided with anti-slip teeth 304, and when the first support arm 302 and the second support arm 303 are spread, the anti-slip teeth 304 can rub against the inner wall of the oil pipe, so that the whole barrel 100 is fixed, and the tool string is prevented from moving upwards continuously.

As shown in fig. 4, in another embodiment, the lengths of the first support arm 302 and the second support arm 303 are shortened, the thicknesses of the first support arm 302 and the second support arm 303 are increased, and the problem of downhole falling caused by easy breakage due to the overlong first support arm 302 and the second support arm 303 is solved.

A compression key 202 is arranged at one end of the shaft pin 301, the compression key 202 is of a structure with a boss at one end, and the plane of the other end of the compression key 202 is tightly pressed with the first supporting arm 302 and the second supporting arm 303; an upper spring 201 is sleeved on one end of the compression key 202 with a boss, which can provide elastic support for the compression key 202, and the upper spring 201 is arranged inside the cylinder body 100.

As shown in fig. 3, the mandrel 400 is a multi-step shaft body, and has the largest outer diameter at one end near the first support arm 302 and the second support arm 303, the middle section having a central outer diameter, and the smallest outer diameter at the other end. The end with the largest outer diameter of the mandrel 400 is provided with a sliding groove 401, and the first support arm 302 and the second support arm 303 can be respectively folded in the sliding groove 401 from two sides; meanwhile, one end of the mandrel 400 with the smallest outer diameter is provided with a limiting groove 403, and the limiting groove 403 is matched with a limiting screw 404 to prevent the mandrel 400 from rotating; a spring 402 is provided around the middle section of the stem 400 to provide resilient support for the stem 400.

In another embodiment, the lower cap 405 is a hollow cylinder with a variable diameter, and one end of the lower cap 405 can be inserted into one end of the cylinder 100 and fit over the mandrel 400 and contact the lower spring 402 to restrain the lower spring 402.

In another embodiment, the limiting screw 404 is a flat head screw with a hexagonal inside shape, which passes through the joint of the cylinder 100 and the lower gland 405 and is embedded in the limiting groove 403, so as to prevent the spindle 400 from rotating and prevent the lower gland 405 from being turned upside down.

In another embodiment, the lower joint 500 is connected to the other end of the lower gland 405, and the lower joint 500 is connected to the other end of the mandrel 400 by the elastic cylindrical pin 501; the other end of the lower sub 500 is designed in a standard wire tool connection manner, including a screw design and a quick connection, and can be connected with other tools for wire work.

In another embodiment, the upper cover 700 is a hollow cylinder with a variable diameter, and one end of the upper cover 700 can be inserted into the other end of the cylinder 100.

In another embodiment, the striking rod 800 has one end sleeved inside the upper gland 700 and the other end sleeved inside the barrel 100.

In another embodiment, one end of the upper joint 600 is connected to the other end of the upper gland 700 by a locking screw, and the upper joint 600 is connected to the shock rod 800 by a screw thread; the other end of top sub 600 adopts standard steel wire tool connection mode design, including screw thread design and high-speed joint, can connect other tools that are used for the steel wire operation.

The utility model provides a prevent moving up the working process of instrument as follows:

one end of the jar rod 800 is inserted through the upper gland 700 and then installed into one end of the barrel 100, the upper joint 600 and the jar rod 800 are connected by screwing, and the locking screw 601 is installed, thereby completing the jar part of the anti-run-up tool.

The upper spring 201 is sleeved into the protruding part of the compression key 202 and then placed into the cylinder body 100, one ends of the first support arm 302 and the second support arm 303, which are provided with the shaft pin holes, are tightly pressed against the compression key 202 and fixed with the cylinder body 100 through the shaft pin 301, the mandrel 400 is sleeved into the lower spring 402 and is together installed into the cylinder body 100, so that the first support arm 302 and the second support arm 303 can be respectively folded in the sliding groove 401; the lower gland 405 is connected and embedded into the limit groove 403 through a limit screw 404; the lower gland 405 is connected to the lower joint 500 by the elastic cylindrical pin 501, and the lower joint 500 is connected to the mandrel 400 by the screw thread, i.e., the prevention portion of the anti-run-up tool is completed.

When the sliding sleeve is opened in steel wire operation and the top is punched, the lower connector 500 drives the mandrel 400 to move upwards, and meanwhile, the lower spring 402 provides an upward pushing force for the mandrel 400, so that the mandrel 400 pushes the compression key 202 to move upwards, the first support arm 302 and the second support arm 303 are supported to be opened, the anti-skid tooth 304 is supported on the inner wall of the oil pipe, and the tool is prevented from moving upwards continuously; when the supporting force is too large to recover the first supporting arm 302 and the second supporting arm 303 by the gravity of the steel wire tool, the upper joint 600 is lifted upwards to drive the shocking rod 800 to shock, so that the first supporting arm 302 and the second supporting arm 303 are loosened, and the releasing and recovering of the tool can be completed.

While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.

Claims (10)

1. An anti-migration tool, comprising:

a barrel;

one end of each of the two supporting arms is provided with a shaft pin hole, the other end of each of the two supporting arms is provided with an anti-skidding tooth, and the two supporting arms are detachably connected with the cylinder body at the same time;

the upper spring is sleeved in the cylinder body and is arranged at one end of the supporting arm with the pin hole;

one end of the compression key is provided with a boss, one end of the compression key, which is provided with the boss, is sleeved in the upper spring, and the other end of the compression key is tightly pressed with the supporting arm;

the mandrel is a multi-step shaft body, and the outer diameter of one end, close to the supporting arm, of the mandrel is larger than that of the other end of the mandrel.

2. The anti-migration tool according to claim 1, wherein the end of the mandrel near the support arm has a sliding slot, and the support arm can be retracted in the sliding slot.

3. The anti-migration tool according to claim 2, further comprising:

and the limiting groove is a strip-shaped groove and is arranged at the other end of the mandrel.

4. The anti-migration tool according to claim 1, further comprising:

and the lower spring is sleeved on the middle section of the mandrel and used for providing elastic support for the mandrel.

5. The anti-migration tool according to claim 4, further comprising:

the lower pressing cover is a hollow cylinder, the outer diameter of the cylinder is variable, one end of the lower pressing cover can be sleeved into one end of the cylinder body and sleeved on the other end of the mandrel to limit the lower spring.

6. The anti-migration tool according to claim 3 or 5, further comprising:

and the limiting screw is an inner hexagonal flat head screw, can penetrate through the joint of the barrel and the lower gland and is embedded into the limiting groove, and is used for limiting the rotation of the mandrel and preventing the lower gland from being reversely buckled.

7. The anti-migration tool according to claim 5, further comprising:

and the lower joint is positioned at the other end of the lower gland, and one end of the lower joint is detachably connected with the other end of the mandrel.

8. The anti-migration tool according to claim 1, further comprising:

the upper gland is a hollow cylinder, the outer diameter of the cylinder is variable, and one end of the upper gland can be sleeved into the other end of the cylinder.

9. The anti-migration tool according to claim 8, further comprising:

and one end of the shock rod is sleeved in the upper gland, and the other end of the shock rod is sleeved in the barrel.

10. The anti-migration tool according to claim 8, further comprising:

and one end of the upper joint is detachably connected with the other end of the upper gland, and the other end of the upper joint is detachably connected with other tools for steel wire operation.

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