Multi-purpose jam-releasing salvage barrel

Abstract

The utility model discloses a multipurpose jam-releasing fishing barrel, and relates to the technical field of fishing barrels. The multipurpose jam-releasing salvage barrel comprises a barrel body, one end of the barrel body is connected with a connector, the other end of the barrel body is connected with a guide shoe, a slip bowl is arranged in the middle of an inner cavity of the barrel body, and a salvage slip is arranged in the inner cavity of the barrel body and located between the slip bowl and the connector. After the fishing barrel descends to the fish top position, the fishing barrel continues to be lowered to the position needing to be fished, the fishing barrel is lifted upwards, at the moment, the fishing slips work, a fishing oil pipe is clamped and lifted out, the fishing slips are cut off, the fishing slips are cut off, the fishing slips are cut off, the fishing slips are cut off, the fishing slips are cut off, and the fishing slips are cut off. If the salvage oil pipe is stuck, the salvage barrel is lifted to a certain load at the moment, the slip bowl shears off the first pin, the cutting slip starts to work, the oil pipe is cut off under the lifting load, the cut part is salvaged out, and the segmented salvage effect can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of scooping tube technology, specifically a multi-purpose card unblocking scooping tube. Background Technology

[0002] A retrieval tube is a specialized tool used in oil or gas drilling to retrieve tools, equipment, or other objects that have fallen or been left behind in the wellbore. Retrieval tubes come in a variety of designs and types, and it is important to select the appropriate retrieval tube based on different well conditions and the object to be retrieved.

[0003] However, existing unblocking and retrieval tools are prone to getting stuck when retrieving downhole tubing, which makes it inconvenient for users to retrieve the tubing and increases the cost of tubing retrieval. Therefore, we propose a multi-purpose unblocking and retrieval tool to solve the above-mentioned problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a multi-purpose unblocking and retrieval cylinder, which solves the problem that existing unblocking and retrieval cylinders are prone to getting stuck when retrieving downhole tubing, making it inconvenient for users to retrieve the tubing and thus increasing the cost of tubing retrieval.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-purpose anti-jamming retrieval cylinder, comprising a cylinder body, one end of which is connected to a connector, and the other end of which is connected to a guide shoe. A slip seat is provided in the middle of the inner cavity of the cylinder body, and a retrieval slip is provided in the inner cavity of the cylinder body between the slip seat and the connector. A cutting slip is provided in the inner cavity of the cylinder body between the slip seat and the guide shoe. The slip seat is fixed to the cylinder body by a first pin, and the slip seat is fixed to the cutting slip by a second pin.

[0006] Preferably, both ends of the cylinder are connected to the connector and the guide shoe by threaded connection.

[0007] Preferably, one end of the locking seat is tapered.

[0008] Preferably, the right-view outer diameter of the cylinder is the same as the right-view outer diameter of the connector and the guide shoe.

[0009] Preferably, the first pin is made of copper.

[0010] Beneficial effects

[0011] This invention provides a multi-purpose card-unblocking and retrieval cylinder. Compared with the prior art, it has the following advantages:

[0012] This multi-purpose retrieval cylinder uses a threaded connection to connect both ends of the cylinder to a connector and a guide shoe, respectively. The retrieval slip and the cutting slip are installed inside the cylinder. The cutting slip is connected to the slip seat by a second pin, and the slip seat is fixed to the cylinder by a first pin. When the retrieval cylinder is lowered into the well, it can be connected to the construction tubing through the connector. Then it is lowered into the well to retrieve the broken pipe. The broken pipe first passes through the cutting slip under the guidance of the guide shoe. At this point, the retrieval cylinder continues to be lowered. Then the broken pipe passes through the retrieval slip and the inner cavity of the connector, and then through the inner cavity of the construction tubing. Finally, it is lowered to the position where it needs to be retrieved. At this point, the retrieval cylinder is lifted to complete the retrieval of the slip.

[0013] When the retrieval slip catches the broken pipe, the conical surface of the slip seat allows the retrieval slip to firmly hold the broken pipe. When the lifting force is less than the shearing force of the first pin, the broken pipe in the well can be smoothly lifted and retrieved from the wellhead. When too many broken pipes are retrieved or when the lifting encounters resistance, and the lifting force is greater than the shearing force of the first pin, the force of the retrieval slip pressing down on the slip seat is greater than the force of the first pin. The slip seat cuts the first pin, and then the retrieval slip is retrieved. The slip seat and the cutting slip descend simultaneously to the lower conical surface of the cylinder. At this point, all the lifting force acts on the cutting slip, and the cutting slip works. Finally, the cutting slip cuts the broken pipe, and the construction pipe is lifted to retrieve the broken pipe from the upper part of the cylinder. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall cross-sectional structure of this utility model.

[0015] In the diagram: 1. Cylinder body; 2. Salvage slip; 3. Joint; 4. Slip seat; 5. Cut slip; 6. First pin; 7. Second pin; 8. Guide shoe. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1This utility model provides a technical solution: a multi-purpose anti-jamming retrieval cylinder, including a cylinder body 1, one end of the cylinder body 1 is connected to a connector 3, the other end of the cylinder body 1 is connected to a guide shoe 8, a slip seat 4 is provided in the middle of the inner cavity of the cylinder body 1, a retrieval slip 2 is provided in the inner cavity of the cylinder body 1 between the slip seat 4 and the connector 3; a cutting slip 5 is provided in the inner cavity of the cylinder body 1 between the slip seat 4 and the guide shoe 8, the slip seat 4 is fixed to the cylinder body 1 by a first pin 6, the slip seat 4 is fixed to the cutting slip 5 by a second pin 7, and one end of the slip seat 4 is conical.

[0018] The two ends of the cylinder 1 can be connected to the connector 3 and the guide shoe 8 respectively via threaded connection. The retrieval slip 2 and the cutting slip 5 are installed inside the cylinder 1. The cutting slip 5 is connected to the slip seat 4 by the second pin 7, and the slip seat 4 is fixed to the cylinder 1 by the first pin 6. When the retrieval cylinder is lowered into the well, it can be connected to the construction tubing via the connector 3, and then lowered into the well to retrieve the broken pipe. The broken pipe, guided by the guide shoe 8, first passes through the cutting slip 5. The retrieval cylinder continues to be lowered, then the broken pipe passes through the retrieval slip 2 and the inner cavity of the connector 3, then through the inner cavity of the construction tubing, and finally reaches the desired retrieval location. At this point, the retrieval cylinder is lifted, completing the retrieval of the slip 2. The retrieval slip 2 clamps the broken pipe. At this time, the conical surface of the slip seat 4 allows the retrieval slip 2 to tightly clamp the broken pipe. When the lifting force is less than the shearing force of the first pin 6, the broken pipe in the well can be lifted smoothly and retrieved from the wellhead. When too many broken pipes are retrieved or when the lifting is obstructed, and the lifting force is greater than the shearing force of the first pin 6, the force of the retrieval slip 2 pressing down on the slip seat 4 is greater than the force of the first pin 6. The slip seat 4 cuts the first pin 6. Then the retrieval slip 2 is retrieved. The slip seat 4 and the cutting slip 5 simultaneously descend to the lower conical surface of the cylinder 1. At this time, all the lifting force is applied to the cutting slip, and the cutting slip works. Finally, the cutting slip 5 cuts the broken pipe, and the construction pipe is lifted to retrieve the broken pipe from the upper part of the cylinder 1.

[0019] See Figure 1 Both ends of the cylinder 1 are connected to the connector 3 and the guide shoe 8 by threaded connection, so that the connector 3 and the guide shoe 8 can be combined and installed with the cylinder 1.

[0020] See Figure 1 The right-view outer diameter of cylinder 1 is the same as the right-view outer diameter of connector 3 and guide shoe 8.

[0021] See Figure 1 The first pin 6 is made of copper, which can improve its service life.

[0022] During operation, the two ends of the cylinder 1 can be connected to the connector 3 and the guide shoe 8 respectively via threaded connection. The retrieval slip 2 and the cutting slip 5 are installed inside the cylinder 1. The cutting slip 5 is connected to the slip seat 4 under the action of the second pin 7. At the same time, the slip seat 4 is fixed to the cylinder 1 by the first pin 6. When the retrieval cylinder is lowered into the well, it can be connected to the construction tubing through the connector 3. Then it is lowered into the well to retrieve the broken pipe. The broken pipe first passes through the cutting slip 5 under the guidance of the guide shoe 8. At this time, the retrieval cylinder continues to be lowered. Then the broken pipe passes through the inner cavity of the retrieval slip 2 and the connector 3, and then through the inner cavity of the construction tubing. Finally, it is lowered to the position where it needs to be retrieved. At this time, the retrieval cylinder is lifted to complete the retrieval of the slip 2. When the retrieval slip 2 catches the broken pipe, the conical surface of the slip seat 4 allows the retrieval slip 2 to tightly grip the broken pipe. When the lifting force is less than the shearing force of the first pin 6, the broken pipe in the well can be smoothly lifted and retrieved from the wellhead. When too many broken pipes are retrieved or when the lifting is obstructed, and the lifting force is greater than the shearing force of the first pin 6, the force of the retrieval slip 2 pressing down on the slip seat 4 is greater than the force of the first pin 6. The slip seat 4 cuts the first pin 6, and then the retrieval slip 2 is retrieved. The slip seat 4 and the cutting slip 5 simultaneously descend to the lower conical surface of the cylinder 1. At this time, all the lifting force acts on the cutting slip, and the cutting slip works. Finally, the cutting slip 5 cuts the broken pipe, and the construction pipe is lifted to retrieve the broken pipe from the upper part of the cylinder 1.

[0023] In summary, after the retrieval cylinder reaches the top of the fish, it continues to be lowered to the position where it needs to be retrieved. The retrieval cylinder is then lifted, at which point the retrieval slips work to lock the retrieval oil pipe and pull it out. If the retrieval oil pipe is stuck, the retrieval cylinder is lifted to a certain load, the slip seat 4 cuts the first pin 6, and the slip 5 starts working. Under the lifting load, the oil pipe is cut off, and the cut-off part is retrieved, thus achieving the effect of segmented retrieval.

[0024] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. A multi-purpose card-unlocking and retrieval cylinder, comprising a cylinder body (1), characterized in that: One end of the cylinder (1) is connected to a connector (3), and the other end of the cylinder (1) is connected to a guide shoe (8). A slip seat (4) is provided in the middle of the inner cavity of the cylinder (1), and a salvage slip (2) is provided in the inner cavity of the cylinder (1) between the slip seat (4) and the connector (3). A cutting slip (5) is provided in the inner cavity of the cylinder (1) and between the slip seat (4) and the guide shoe (8). The slip seat (4) is fixed to the cylinder (1) by a first pin (6) and the slip seat (4) is fixed to the cutting slip (5) by a second pin (7).

2. The multi-purpose card-unlocking and retrieval cylinder according to claim 1, characterized in that: Both ends of the cylinder (1) are connected to the connector (3) and the guide shoe (8) by means of threaded connection.

3. The multi-purpose card-unlocking and retrieval cylinder according to claim 1, characterized in that: One end of the locking seat (4) is tapered.

4. The multi-purpose card-unlocking and retrieval cylinder according to claim 1, characterized in that: The right-view outer diameter of the cylinder (1) is the same as the right-view outer diameter of the connector (3) and the guide shoe (8).

5. A multi-purpose card-unlocking and retrieval cylinder according to claim 1, characterized in that: The first pin (6) is made of copper.

Images