SIM (Subscriber Identity Module) balance fishing rod

Abstract

The utility model discloses an SIM (Subscriber Identity Module) balance fishing rod, which comprises a balance rod, a fishing rod and a fishing rod, the fishing rod and the balance rod are coaxially arranged; wherein one end of the fishing rod is provided with a second threaded connector, the second threaded connector is matched with the first threaded connector, and the fishing rod is connected with the first threaded connector through the second threaded connector; the jackscrew is arranged in the radial direction of the fishing rod; the jackscrew is installed at the joint of the first threaded connector and the second threaded connector, and the balance rod and the fishing rod are locked. According to the SIM balance fishing rod provided by the utility model, the fishing task of a blanking plug can be completed by descending a well once, and the operation efficiency is improved on the premise of safe operation.

Description

Technical Field

[0001] The utility model belongs to the technical field of wireline working tools and downhole fluid control devices, and particularly relates to a SIM balanced fishing rod. Background Art

[0002] Tools such as the steel wire SIM type tubing plug are widely used in CNOOC's oil and gas field production and well completion operations. The SIM type tubing plug has a characteristic: when salvaging the SIM plug, the tool needs to be lowered twice to complete the salvage task. The first step is to lower the balance rod (pressure balance) to open the plug balance valve, and the second step is to lower the salvage tool to salvage the plug body, resulting in low operation efficiency. Utility Model Content

[0003] The purpose of the utility model is to overcome the defects of the prior art and provide a SIM balanced fishing rod, which can complete the task of fishing the plug in one trip down the well, thereby improving the operation efficiency under the premise of safe operation.

[0004] The technical solution provided by this utility model is:

[0005] A SIM balanced fishing rod, comprising:

[0006] a balancing rod, one end of which is provided with a first threaded joint;

[0007] a fishing rod, which is coaxially arranged with the balance rod;

[0008] Wherein, one end of the salvage rod is provided with a second threaded joint, the second threaded joint matches the first threaded joint, and the salvage rod is connected to the first threaded joint through the second threaded joint;

[0009] a top screw, which is arranged along the radial direction of the fishing rod;

[0010] Wherein, the top screw is installed at the connection between the first threaded joint and the second threaded joint to lock the balance rod and the salvage rod.

[0011] Preferably, the outer diameter of the fishing rod is larger than the outer diameter of the balance rod.

[0012] Preferably, the first threaded joint is an external threaded joint, and the second threaded joint is an internal threaded joint.

[0013] Preferably, the balance bar comprises:

[0014] Mandrel;

[0015] Wherein, the first threaded joint is provided at one end of the core shaft;

[0016] The lower joint is coaxially fixedly connected to the other end of the core shaft.

[0017] Preferably, the balance bar further comprises:

[0018] an elastic cylindrical pin, which is arranged along the radial direction of the balance rod;

[0019] Wherein, the lower joint is connected to the core shaft through threads, and the lower joint and the core shaft are locked by the elastic cylindrical pin.

[0020] Preferably, the SIM balanced salvage rod further comprises:

[0021] The fishing device is connected to the other end of the fishing rod through threads.

[0022] Preferably, the top screw is a hexagon socket set screw.

[0023] The beneficial effects of the utility model are:

[0024] The SIM balanced fishing rod provided by the utility model can complete the fishing task of the plugger in one trip down the well, thereby improving the operation efficiency under the premise of safe operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of the SIM balanced fishing rod described in the present utility model.

[0026] Figure 2 This is a schematic diagram of the connection structure between the balance rod and the salvage rod described in the present utility model. DETAILED DESCRIPTION

[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0028] like Figure 1-2 As shown, the present invention provides a SIM balanced salvage rod, which mainly includes: a balance rod 110 and a salvage rod 120. A first threaded joint is provided at one end of the balance rod 110. The salvage rod 120 is coaxially arranged with the balance rod 110; wherein, a second threaded joint is provided at one end of the salvage rod 120, and the second threaded joint matches the first threaded joint. The salvage rod 120 is connected to the first threaded joint of the balance rod 110 via the second threaded joint.

[0029] The top screw 130 is arranged along the radial direction of the fishing rod 120. The top screw 130 is installed at the connection between the first threaded joint and the second threaded joint to lock the balance rod 110 and the fishing rod 120. As a preferred embodiment, the top screw 130 is a hexagon socket head set screw to facilitate installation and removal of the top screw.

[0030] The outer diameter of the fishing rod 120 is greater than the outer diameter of the balancing rod 110. The first threaded joint provided on the balancing rod 110 is an external threaded joint, and the second threaded joint provided on the fishing rod 120 is an internal threaded joint.

[0031] In this embodiment, the balancing rod 110 includes a core shaft 111 and a lower joint 112. The first threaded joint is provided at one end (upper end) of the core shaft 111; the lower joint 112 is coaxially fixedly connected to the other end (lower end) of the core shaft 111.

[0032] As a preference, the balance bar further includes: an elastic cylindrical pin 113, which is arranged along the radial direction of the balance bar 110; wherein the lower joint 112 is connected to the core shaft 111 through a thread, and the lower joint 112 and the core shaft 111 are locked by the elastic cylindrical pin 113.

[0033] The SIM balanced salvage rod further comprises a salvage device 140, which is threadedly connected to the other end of the salvage rod 120 (the end away from the balance rod 110). The salvage device 140 is a GS salvage device, which is used to salvage the plug.

[0034] The SIM balanced salvage rod provided by the utility model operates as follows: the balanced salvage rod (a combination of a balanced rod and a salvage rod) is connected to the bottom of the GS salvage device and lowered into the well together. After the balanced salvage rod enters the interior of the SIM plug, it first contacts the plug's balancing valve. The GS salvage device then strikes down, cutting the balancing valve shear pin through the balanced salvage rod and opening the balancing valve to begin balancing the pressure. At this point, the salvage rod contacts the unlocking mechanism. After 3-5 minutes, it continues to strike down to release the locking mechanism and grab the plug. The plug is then recovered to the surface, completing the task of salvaging the plug. Because the outer diameter of the salvage rod is larger than the balanced rod, it does not affect the operation of the balanced rod during operation. Once the balanced rod has completely balanced the plug, continuing to lower the salvage rod will unlock the plug. At this point, the salvage device connected to the upper end will remove the plug.

[0035] The SIM balanced fishing rod provided by this utility model does not change the structure and working principle of the plug body. Instead, the balance rod and fishing rod are integrated into one, combining pressure balancing and fishing. This allows the balancing valve to be opened and the plug body to be fished in one trip. This allows the plug to be fished in one trip, improving operational efficiency while ensuring safe operation.

[0036] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with this field, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A SIM balanced fishing rod, characterized in that: include: a balancing rod, one end of which is provided with a first threaded joint; a fishing rod, which is coaxially arranged with the balance rod; Wherein, one end of the salvage rod is provided with a second threaded joint, the second threaded joint matches the first threaded joint, and the salvage rod is connected to the first threaded joint through the second threaded joint; a top screw, which is arranged along the radial direction of the fishing rod; Wherein, the top screw is installed at the connection between the first threaded joint and the second threaded joint to lock the balance rod and the salvage rod.

2. The SIM balanced fishing rod according to claim 1, characterized in that: The outer diameter of the fishing rod is greater than the outer diameter of the balance rod.

3. The SIM balanced fishing rod according to claim 2, characterized in that: The first threaded joint is an external threaded joint, and the second threaded joint is an internal threaded joint.

4. The SIM balanced fishing rod according to claim 2 or 3, characterized in that: The balance bar comprises: Mandrel; Wherein, the first threaded joint is provided at one end of the core shaft; The lower joint is coaxially fixedly connected to the other end of the core shaft.

5. The SIM balanced fishing rod according to claim 4, characterized in that: The balance bar further comprises: an elastic cylindrical pin, which is arranged along the radial direction of the balance rod; Wherein, the lower joint is connected to the core shaft through threads, and the lower joint and the core shaft are locked by the elastic cylindrical pin.

6. The SIM balanced fishing rod according to claim 5, characterized in that: Also includes: The fishing device is connected to the other end of the fishing rod through threads.

7. The SIM balanced fishing rod according to claim 6, characterized in that: The top screw adopts a hexagon socket head set screw.

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