A kind of anti-falling well detection device and operation method

Abstract

The present invention discloses a well-fall prevention detection device and an operation method, the device includes a hydraulic inlet and outlet joint and an electromagnetic sucker, etc.; the operation method includes: placing the well-fall prevention tool on a tool guide rail and connecting it with a counterweight iron; starting a hydraulic pump, opening a tool lifting hydraulic cylinder to lift the casing tool against a limit back plate; opening an electromagnetic sucker switch to allow the electromagnetic sucker to suck the tool, lifting a synchronous bidirectional hydraulic cylinder to a test starting point, disconnecting it, and recording corresponding displacement data on the counterweight iron at this time; then lowering the synchronous bidirectional hydraulic cylinder to allow the crossbeam to contact the tool, applying pressure, and observing the tool's sliding down; lifting the tool to test the anchor release force, and observing the pressure indication on the hydraulic pump station; then placing the tool into the bottom of the casing, disconnecting the electromagnetic sucker, opening a single-rod hydraulic cylinder, and placing the casing tool back on the tool guide rail. The present invention can test the braking distance, support force, and anchor release force of the well-fall prevention tool to verify whether the tool can meet the actual requirements of production needs.

Description

Technical Field

[0001] The invention relates to a well-fall prevention detection device and an operation method, which are used for testing main parameters of a well-fall prevention tool such as a braking distance, a supporting force and an anchor release force to verify the performance of the tool. Background Art

[0002] Horizontal wells are widely used in Changqing Oilfield as an important technical means to increase the production of single wells and change the development mode. With the large-scale application of horizontal wells in oil fields and the extension of development time, accidents of production tubing breaking and falling into the well will inevitably occur during the production process. Due to the particularity of the wellbore structure of the horizontal well, once the production tubing falls into the horizontal section, it will directly affect the production of crude oil. Well repairing technologies such as horizontal well salvage are not yet mature, with a low salvage success rate and high construction costs. In order to avoid the workload of salvaging objects in horizontal wells, horizontal well tubing fall-in prevention devices have been developed and tested in recent years. When the tubing falls into the well, it can timely jam the tubing to prevent it from falling into the well, and it has been promoted and applied on site. Therefore, the performance stability of the anti-fall-in-well tool will be more important, and the main parameters of this type of tool need to be tested to ensure the stability of the well entry work. Summary of the invention

[0003] The purpose of the present invention is to provide a well-fall prevention detection device and an operating method, which is suitable for testing the main parameters of the well-fall prevention tool, such as braking distance, supporting force and unanchoring force, so as to provide data basis for the tool to be put into service in the well.

[0004] The present invention is achieved by adopting the following technical solutions:

[0005] A well-fall prevention detection device comprises a hydraulic inlet and outlet joint, a synchronous two-way hydraulic cylinder, a rotating hanger, a tool lifting hydraulic cylinder, a tool guide rail, an electromagnetic suction cup and a gantry bracket; wherein the gantry bracket is arranged on the top of the synchronous two-way hydraulic cylinder, and the two are connected and combined into a bracket for lifting the well-fall prevention tool to a test position, the tool lifting hydraulic cylinder is connected to the gantry bracket through the rotating hanger, and is used to lift the tool against a limit back plate, the tool guide rail is arranged in a horizontal direction, and is connected to the bottom layer of the gantry bracket at 90 degrees, and is used to assemble the tool and place the tool in the test casing, and the electromagnetic suction cup is arranged on the gantry bracket, and is used to suck or release the tool to detect the tool performance;

[0006] The hydraulic inlet and outlet joints are connected to the synchronous bidirectional hydraulic cylinder, and the hydraulic energy is transmitted to the synchronous bidirectional hydraulic cylinder and the tool lifting hydraulic cylinder through the hydraulic pump.

[0007] A further improvement of the present invention is that the hydraulic inlet and outlet joints are connected to the same side of the synchronous bidirectional hydraulic cylinder.

[0008] A further improvement of the present invention is that a plurality of tool guide rails are arranged in the horizontal direction.

[0009] A further improvement of the present invention is that a counterweight iron is provided on the tool guide rail.

[0010] A further improvement of the present invention is that the synchronous bidirectional hydraulic cylinder comprises two symmetrically arranged hydraulic cylinders.

[0011] An operating method of a well-fall prevention detection device comprises the following steps:

[0012] Step 1) placing the well-fall prevention tool on the tool rail and connecting it to the counterweight iron, and then inserting it into the test casing after connection;

[0013] Step 2) Start the hydraulic pump, open the tool lifting hydraulic cylinder to lift the casing tool against the limit back plate, open the synchronous bidirectional double hydraulic cylinder to lift it to the top, and lower the synchronous bidirectional hydraulic cylinder to contact the tool;

[0014] Step 3) Turn on the electromagnetic chuck switch to make the electromagnetic chuck hold the tool, lift the synchronous bidirectional hydraulic cylinder to the test starting point, disconnect the electromagnetic chuck to release the tool to fall freely, and the qualified tool will quickly activate the brake slips to brake. At this time, the corresponding displacement data on the counterweight iron is recorded, which is the braking distance of the tool;

[0015] Step 4) Then lower the synchronous bidirectional hydraulic cylinder to make the crossbeam contact the tool, pressurize it to 550KN, and observe the sliding of the tool. If there is no sliding, the support force is qualified;

[0016] Step 5) Use tools to test the anchor release force and observe the pressure indication on the hydraulic pump station. If it is less than 30KN, it is qualified.

[0017] Step 6) Then put the tool into the bottom of the casing, disconnect the electromagnetic chuck and open the single-rod hydraulic cylinder to put the casing tool back into the tool guide.

[0018] The present invention has the following beneficial technical effects:

[0019] The present invention provides a well-fall prevention detection device and an operation method, which are suitable for testing the braking distance, supporting force, anchor release force and other main parameters of the well-fall prevention tool to verify the performance of the tool and detect the reliability of the tool entering the well. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a side view of the anti-falling into a well detection device of the present invention.

[0021] Figure 2 It is a front view of the present invention.

[0022] Figure 3 This is the diagram for connecting the counterweight iron to the tool.

[0023] Figure 4 This is a diagram of the feeding tool.

[0024] Figure 5 This is a diagram for detecting tools to prevent falling into a well.

[0025] Figure 6 This is a diagram for detecting tools to prevent falling into a well.

[0026] Description of reference numerals:

[0027] 1- Hydraulic inlet and outlet joints, 2- Synchronous bidirectional hydraulic cylinder, 3- Rotating bracket, 4- Tool lifting hydraulic cylinder, 5- Tool guide rail, 6- Electromagnetic suction cup, 7- Gantry bracket, 8- Counterweight iron. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with the accompanying drawings.

[0029] like Figures 1 to 6 As shown, the present invention provides an anti-falling into a well detection device, which includes a hydraulic inlet and outlet joint 1, a synchronous bidirectional hydraulic cylinder 2, a rotating bracket 3, a tool lifting hydraulic cylinder 4, a tool guide rail 5, an electromagnetic suction cup 6 and a gantry bracket 7.

[0030] The synchronous bidirectional hydraulic cylinder is connected to the gantry bracket to form a bracket for lifting the anti-fall tool. The rotating bracket and the tool lifting hydraulic cylinder are used to lift the tool to the test position. The tool guide is in a horizontal position for assembling the tool. The electromagnetic chuck is used for tool performance testing.

[0031] The working principle of the present invention is as follows:

[0032] The present invention drives the tool lifting hydraulic cylinder 4 and the synchronous bidirectional double hydraulic cylinder 2 by a hydraulic pump to lift the tool to a test position, and detects the braking performance by sucking or releasing the tool by an electromagnetic suction cup 6. The supporting force and unanchoring force of the tool are detected by lifting and lowering the synchronous bidirectional double hydraulic cylinder 2.

[0033] The operating method of the anti-falling-into-well detection device of the present invention comprises the following steps:

[0034] Step 1) placing the well-fall prevention tool on the tool guide rail 5 and connecting it to the counterweight iron 8, and then inserting it into the test casing;

[0035] Step 2) Start the hydraulic pump, open the tool lifting hydraulic cylinder 4 to lift the casing tool against the limit back plate, open the synchronous bidirectional double hydraulic cylinder 2 to raise it to the top, and lower the synchronous bidirectional hydraulic cylinder 2 to contact the tool;

[0036] Step 3) Turn on the electromagnetic chuck 6 switch to make the electromagnetic chuck 6 hold the tool, lift the synchronous bidirectional hydraulic cylinder 2 to the test starting point, disconnect the electromagnetic chuck 6 to release the tool to fall freely, and the qualified tool will quickly activate the brake slips for braking. At this time, the corresponding displacement data on the counterweight iron 8 is recorded, which is the braking distance of the tool;

[0037] Step 4) Then lower the synchronous bidirectional hydraulic cylinder 2 to make the crossbeam contact the tool, pressurize it to 550KN, and observe the sliding of the tool. If there is no sliding, the supporting force is qualified;

[0038] Step 5) Use tools to test the anchor release force and observe the pressure indication on the hydraulic pump station. If it is less than 30KN, it is qualified.

[0039] Step 6) Then put the tool into the bottom of the casing, disconnect the electromagnetic chuck 6 and open the single-rod hydraulic cylinder to put the casing tool back into the tool guide rail 5.

Claims

1. An operating method of a well-fall prevention detection device, characterized in that: The anti-fall-into-well detection device comprises a hydraulic inlet and outlet joint (1), a synchronous bidirectional hydraulic cylinder (2), a rotating hanger (3), a tool lifting hydraulic cylinder (4), a tool guide rail (5), an electromagnetic suction cup (6) and a gantry bracket (7); wherein, The gantry bracket (7) is arranged on the top of the synchronous bidirectional hydraulic cylinder (2), and the two are connected and combined to form a bracket for lifting the anti-falling well tool to the test position. The tool lifting hydraulic cylinder (4) is connected to the gantry bracket (7) through the rotating hanger (3) and is used to lift the casing and lean it against the limit back plate. The tool guide rail (5) is arranged in the horizontal direction and is connected to the bottom layer of the gantry bracket (7) at 90 degrees, and is used to assemble the tool and place the tool on the casing. The electromagnetic suction cup (6) is arranged on the gantry bracket (7) and is used to suck or release the tool to detect the tool performance. The hydraulic inlet and outlet joints (1) are connected to the synchronous bidirectional hydraulic cylinder (2), and the hydraulic energy is transmitted to the synchronous bidirectional hydraulic cylinder (2) and the tool lifting hydraulic cylinder (4) through the hydraulic pump; The operation method comprises the following steps: Step 1) placing the anti-falling-in-the-well tool on the tool guide rail (5) and connecting it to the counterweight iron (8), and then inserting it into the casing after the connection; Step 2) start the hydraulic pump, open the tool lifting hydraulic cylinder (4) to lift the casing against the limit back plate, open the synchronous bidirectional hydraulic cylinder (2) to raise it to the top, and lower the synchronous bidirectional hydraulic cylinder (2) to contact the tool; Step 3) Turn on the electromagnetic chuck (6) switch to make the electromagnetic chuck (6) suck the tool, lift the synchronous bidirectional hydraulic cylinder (2) to the test starting point, disconnect the electromagnetic chuck (6) to release the tool to fall freely, and the qualified tool will quickly activate the brake slip to brake. At this time, the corresponding displacement data on the counterweight iron (8) is recorded, which is the braking distance of the tool; Step 4) Then lower the synchronous bidirectional hydraulic cylinder (2) to make the crossbeam contact the tool, pressurize it to 550KN, and observe the sliding of the tool. If there is no sliding, the supporting force is qualified; Step 5) Use tools to test the anchor release force and observe the pressure indication on the hydraulic pump station. If it is less than 30KN, it is qualified. Step 6) Then put the tool into the bottom of the casing, disconnect the electromagnetic chuck (6), open the tool lifting hydraulic cylinder (4) and put the casing back into the tool guide (5).

2. The method for operating a well-fall prevention detection device according to claim 1, characterized in that: The hydraulic inlet and outlet joints (1) are connected to the same side of the synchronous bidirectional hydraulic cylinder (2).

3. The method for operating a well-fall prevention detection device according to claim 1, characterized in that: A plurality of tool guide rails (5) are arranged in the horizontal direction.

4. The method for operating a well-fall prevention detection device according to claim 1, characterized in that: A counterweight iron (8) is arranged on the tool guide rail (5).

5. The method for operating a well-fall prevention detection device according to claim 1, characterized in that: The synchronous bidirectional hydraulic cylinder (2) comprises two symmetrically arranged hydraulic cylinders.

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