A packer for use in oil wells

Abstract

The utility model relates to the technical field of packer for petroleum, especially a packer for petroleum, including packer and screw thread, the outer wall front of packer is processed with screw thread, the outer wall of screw thread is connected with support structure, the left and right sides of packer are respectively fixed with straight board, the upper and lower sides back of packer are respectively processed with round mouth, the outer wall back of packer is inserted with straight cylinder, make sleeve in the outer wall of screw thread rotate back in support structure, the sleeve of rotation drives round bar to move back, thereby make the slanting pole rotate outward, the lateral support of rotating slanting pole makes the horizontal plate in the outer wall of straight board rotate outward, makes the lateral end of horizontal plate and well wall and tightly, completes the support to packer, can guarantee the stability of packer when oil production, eliminates the unstable factor in the use of packer for petroleum, ensures the normal use of packer for petroleum.

Description

Technical Field

[0001] This utility model relates to the technical field of packers for petroleum applications, specifically a packer for petroleum applications. Background Technology

[0002] Oil packers are downhole tools that are attached to the downhole tubing string and used to seal the annular space between the tubing and the casing or open hole of the oil and gas well.

[0003] For example, in an oilfield packer with authorization announcement number "CN220248035U", a connecting bracket is fixedly installed on the side wall of the sliding ring. The end of the connecting bracket away from the sliding ring can be connected to the oil pipeline through a fixed ring. A sliding bracket that can swing up and down around the middle of the buffer plate is movably installed on the side wall of the buffer plate corresponding to the position below the fixed support rod. This causes the lower end of the buffer plate to be pressed against the wall of the reserved hole, further placing the packer in the middle of the reserved hole, reducing the shaking of the packer during operation, increasing its service life and sealing performance. However, in the use of oilfield packers, the compression method is used, which requires continuous compression. At the same time, the support component adopts a spring control method, and long-term compression will damage the elasticity of the spring, increasing the instability factors in the use of oilfield packers and affecting their normal use. Utility Model Content

[0004] The purpose of this utility model is to solve the problem of increased instability factors in the use of oil packers, which affects the normal use of oil packers, and to propose an oil packer.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] Design a packer for oil use, including a packer and threads. The packer has threads machined on the front of its outer wall, and a support structure is connected to the outer wall of the threads. Straight plates are fixed to the left and right sides of the packer, and round openings are machined on the rear of the top and bottom sides of the packer. A straight cylinder is inserted into the rear of the packer's outer wall.

[0007] Preferably, the support structure includes a sleeve and a round rod. The inner wall of the sleeve is threaded to the outer wall of the threaded rod. The outer opening of the sleeve is slidably engaged with the front end of the outer wall of the round rod. A diagonal rod is rotatably connected to the rear of the outer wall of the round rod. A bracket is rotatably connected to the rear of the outer wall of the diagonal rod. A horizontal plate is fixed to the rear end face of the bracket.

[0008] Preferably, the inner wall of the horizontal plate is slidably engaged with the outer wall of the vertical plate.

[0009] Preferably, the outer wall of the straight cylinder is threaded with screws on both the upper and lower sides.

[0010] Preferably, a handle is fixed to the outside of the screw.

[0011] Preferably, the inner side of the outer wall of the screw is inserted into the inner wall of the circular opening.

[0012] The oilfield packer proposed in this utility model has the following advantages: the sleeve rotates backward on the outer wall of the thread in the support structure, and the rotating sleeve drives the round rod to move backward, thereby causing the inclined rod to rotate outward. The outer side of the rotating inclined rod cooperates with the bracket to make the horizontal plate rotate outward on the outer wall of the straight plate, so that the outer end of the horizontal plate abuts against the well wall, thus completing the support of the packer. This can ensure the stability of the packer during oil production, eliminate the unstable factors in the use of oilfield packers, and ensure the normal use of oilfield packers. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 for Figure 1 Schematic diagram of the connection relationship between the middle sleeve and the round rod;

[0015] Figure 3 for Figure 1 A schematic diagram of the structure of A in the middle;

[0016] Figure 4 for Figure 1 A schematic diagram showing the connection structure between the straight cylinder, screw, and handle.

[0017] In the diagram: 1. Packer, 2. Support structure, 201. Sleeve, 202. Round rod, 203. Diagonal rod, 204. Bracket, 205. Horizontal plate, 3. Reinforcing structure, 301. Vertical plate, 302. Protruding rib, 303. Bolt, 4. Thread, 5. Straight plate, 6. Round opening, 7. Straight cylinder, 8. Screw, 9. Handle. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings:

[0019] Example 1:

[0020] Please see Figure 1-4 In this embodiment, an oil packer includes a packer 1 and a thread 4. The outer wall of the packer 1 is machined with a thread 4. The operation and use of the packer 1 is existing technology and will not be elaborated in detail. The model is selected according to the usage requirements. The outer wall of the thread 4 is connected to a support structure 2. Straight plates 5 are fixed to the left and right sides of the packer 1 respectively. Round openings 6 are machined at the rear of the upper and lower sides of the packer 1 respectively. A straight cylinder 7 is inserted into the rear of the outer wall of the packer 1. The straight cylinder 7 can be pulled backward by force to disengage from the rear of the outer wall of the packer 1.

[0021] The support structure 2 includes a sleeve 201 and a round rod 202. The inner wall of the sleeve 201 is threadedly connected to the outer wall of the thread 4. The sleeve 201 rotates back and forth through the outer wall of the thread 4 when subjected to force. The round opening of the outer wall of the sleeve 201 is slidably engaged with the front end of the outer wall of the round rod 202. The round rod 202 can slide in the round opening of the outer wall of the sleeve 201. A diagonal rod 203 is rotatably connected to the rear of the outer wall of the round rod 202. The front of the outer wall of the diagonal rod 203 rotates through the pin at the rear of the outer wall of the round rod 202 when subjected to force. A bracket 204 is rotatably connected to the rear of the outer wall of the diagonal rod 203. The rear of the outer wall of the diagonal rod 203 rotates through the pin on the inner side of the bracket 204 when subjected to force. A horizontal plate 205 is fixedly connected to the rear end face of the bracket 204. The inner wall of the horizontal plate 205 is slidably engaged with the outer wall of the straight plate 5 when subjected to force. The horizontal plate 205 slides left and right through the outer wall of the straight plate 5 when subjected to force.

[0022] The sleeve 201 rotates backward on the outer wall of the thread 4 through the support structure 2. The rotating sleeve 201 drives the round rod 202 to move backward, thereby causing the inclined rod 203 to rotate outward. The outer side of the rotating inclined rod 203 cooperates with the bracket 204 to make the horizontal plate 205 rotate outward on the outer wall of the straight plate 5, so that the outer end of the horizontal plate 205 abuts against the well wall, thus completing the support of the packer 1. This can ensure the stability of the packer 1 during oil production, eliminate the unstable factors in the use of oil packers, and ensure the normal use of oil packers.

[0023] The upper and lower sides of the outer wall of the straight cylinder 7 are respectively threaded with screws 8. The screws 8 rotate up and down through the outer wall of the straight cylinder 7 under force. A handle 9 is fixed to the outer side of the screws 8, which facilitates the rotation of the screws 8. The inner side of the outer wall of the screws 8 is inserted into the inner wall of the round opening 6.

[0024] Working principle:

[0025] Oilfield packer straight tube connection:

[0026] When using the packer 1, first, put the straight cylinder 7 on the back of the outer wall of the packer 1 from back to front. Then, hold the handle 9 and drive the screw 8 to rotate. The rotating screw 8 rotates inward through the straight cylinder 7, so that the inner side of the outer wall of the screw 8 is inserted into the inner wall of the round opening 6, thus completing the installation of the packer 1 and the straight cylinder 7.

[0027] Oil packer and tubing installation:

[0028] Then, the inner wall of the straight cylinder 7 is inserted into the oil production pipeline in the well. At this time, the packer is located in the well. Then, the sleeve 201 is rotated backward on the outer wall of the thread 4. The rotating sleeve 201 drives the round rod 202 to move backward, thereby causing the inclined rod 203 to rotate outward. The outer side of the rotating inclined rod 203 cooperates with the bracket 204 to make the horizontal plate 205 rotate outward on the outer wall of the straight plate 5, so that the protrusion at the outer end of the horizontal plate 205 is inserted into the well wall, thus completing the support of the packer 1 and ensuring the stability of the packer 1 during oil production.

[0029] Replacement of packer components for oilfield applications:

[0030] When the protrusion 302 is severely worn, the bolt 303 is rotated outward through the vertical plate 301. At this time, the inner side of the outer wall of the bolt 303 disengages from the outer round opening of the horizontal plate 205. Then, the vertical plate 301 and the protrusion 302 are removed. Subsequently, the outer wall of the new vertical plate 301 is attached to the end of the horizontal plate 205. Finally, the bolt 303 thread passes through the vertical plate 301 and is threaded to the outer round opening of the horizontal plate 205, thus completing the fixation of the vertical plate 301 and the protrusion 302.

[0031] Example 2:

[0032] Please see Figure 1-4 In this embodiment, an oil packer further includes a reinforcing structure 3, which includes a vertical plate 301 and a protrusion 302. The inner side of the vertical plate 301 is attached to the outer side of the horizontal plate 205, and the outer side of the vertical plate 301 is fixedly connected to the inner side of the protrusion 302. The inner wall of the vertical plate 301 is threaded with a bolt 303, and the inner side of the outer wall of the bolt 303 is threadedly connected to the outer side of the horizontal plate 205.

[0033] Working principle:

[0034] Make the inner side of the vertical plate 301 fit against the outer side of the horizontal plate 205. Then, the bolt 303 threaded through the vertical plate 301 and connected to the outer thread of the horizontal plate 205, thus completing the fixation of the vertical plate 301 and the protrusion 302. When the horizontal plate 205 moves outward, the protrusion 302 will be inserted into the well wall, thereby improving the connection stability. The size of the protrusion 302 can be adjusted according to the different materials of the well wall.

[0035] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A packer for oilfield use, comprising a packer (1) and a thread (4), characterized in that: The packer (1) has a thread (4) machined on the front of its outer wall. The outer wall of the thread (4) is connected to a support structure (2). Straight plates (5) are fixed to the left and right sides of the packer (1). Round openings (6) are machined on the rear of the upper and lower sides of the packer (1). A straight cylinder (7) is inserted into the rear of the outer wall of the packer (1).

2. The packer for oilfield use according to claim 1, characterized in that: The support structure (2) includes a sleeve (201) and a round rod (202). The inner wall of the sleeve (201) is threaded to the outer wall of the thread (4). The outer opening of the sleeve (201) is slidably engaged with the front end of the outer wall of the round rod (202). A diagonal rod (203) is rotatably connected to the rear of the outer wall of the round rod (202). A bracket (204) is rotatably connected to the rear of the outer wall of the diagonal rod (203). A horizontal plate (205) is fixed to the rear end face of the bracket (204).

3. The packer for oilfield use according to claim 2, characterized in that: The inner wall of the horizontal plate (205) is slidably engaged with the outer wall of the vertical plate (5).

4. The packer for oilfield use according to claim 1, characterized in that: The outer wall of the straight cylinder (7) is threaded with screws (8) on the upper and lower sides respectively.

5. The packer for oilfield use according to claim 4, characterized in that: A handle (9) is fixed to the outside of the screw (8), and the inner side of the outer wall of the screw (8) is inserted into the inner wall of the round opening (6).

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