Simulation test device of sleeve inner wall cleaning simulation test equipment

Abstract

The utility model discloses a simulation test device of sleeve inner wall cleaning simulation test equipment, which comprises an opening and closing simulation sleeve, a tension sensor is arranged at a clamping position of the opening and closing simulation sleeve, the opening and closing simulation sleeve is connected with a fixed shaft, a sliding shaft sleeve is movably sleeved on the fixed shaft, a rack is arranged on the inner side of the fixed shaft along the height direction of the fixed shaft, and the rack is connected with the sliding shaft sleeve. The rack is meshed with a gear, the gear is installed in an installation cavity of the sliding shaft sleeve, and an installation shaft of the gear is fixedly connected with the output end of a direct-current servo motor. The opening and closing simulation casing pipe provided with the tension sensor can adjust the clamping force at the clamping position according to displayed data, and the spring stiffness of the test cleaning product is accurately measured. In the experiment, the change condition of the clamping force can be monitored in real time, and first-hand data of the scraping effect of the test cleaning product can be obtained. And the opening and closing simulation sleeve can be driven by the sliding shaft sleeve to move up and down, the actual working condition of the sleeve inner wall cleaning tool in the well is restored to the maximum extent, and the accuracy of test data is ensured.

Description

Technical Field

[0001] The utility model relates to a test device, in particular to a simulation test device of a casing inner wall cleaning simulation test equipment. Background Art

[0002] During oil and gas drilling and production, the oil pipe and casing are used underground for a long time, and the inner wall of the casing will rust and slightly deform, and the inner wall of the oil pipe will corrode and condense wax. The occurrence of these two abnormal phenomena will greatly affect the normal oil and gas production operations. In serious cases, there will even be accidents of casing and oil pipe blockage, forcing the oil and gas drilling and production operations to be unable to proceed, causing great losses to the oil and gas production work.

[0003] At present, the common practice to deal with this phenomenon is to use casing inner wall cleaning tools (including scrapers, brushes, magnetic columns, etc.) to remove rust and wax deposits inside the oil casing. However, due to the wide variety and structure of such products on the market, there is no measurement equipment for the cleaning effect of each tool, which makes it impossible for oil field technicians to make judgments. The selection of products and the setting of usage parameters have been in the test and exploration stage, and it is impossible to accurately guide field operations. There is an urgent need for a scraper field simulation test equipment to perform simulated casing scraping tests on products of different manufacturers and types, determine product performance, obtain the best usage parameters, and ensure accurate and efficient field use.

[0004] For this simulation test equipment, our design idea is to design two major components, one of which is used to clamp, position and rotate the test cleaning product, and the other is used to drive the simulation sleeve that slides on the test cleaning product to move up and down to simulate the cleaning process. Because there was no related equipment in the industry to learn from before, how to design the two major components of the simulation test equipment has become a technical problem that needs to be solved urgently. Summary of the invention

[0005] The purpose of the utility model is to provide a simulation test device for the cleaning simulation test equipment of the inner wall of a sleeve. The test component structure is used to drive the simulation sleeve slidably sleeved on the test cleaning product to move up and down to simulate the cleaning process, so as to conduct relevant performance tests on the test cleaning product.

[0006] The technical solution of the utility model: a simulation test device of a casing inner wall cleaning simulation test equipment, including an opening and closing simulation casing which is vertically arranged and opened at both ends, a tension sensor is arranged at the clamping position of the opening and closing simulation casing, the opening and closing simulation casing is connected to a lifting mechanism via a connecting rod, the lifting mechanism includes a vertically fixed fixed shaft, a sliding sleeve is movably sleeved on the fixed shaft, a rack is arranged on the inner side of the fixed shaft along its height direction, the rack is meshed with a gear, the gear is installed in the installation cavity of the sliding sleeve, and the installation shaft of the gear is fixedly connected to the output end of the DC servo motor.

[0007] In the aforementioned simulation test device of the casing inner wall cleaning simulation test equipment, the opening and closing simulation casing includes two semicircular casings with openings facing each other, one end of the two semicircular casings with openings facing each other is rotatably connected via a rotating shaft, and the other end forms a horizontal outward extension section, and the two extension sections are connected via a tension sensor.

[0008] In the aforementioned simulation test device of the casing inner wall cleaning simulation test equipment, the top end of the fixed shaft is threadedly sleeved with a limiting end cover.

[0009] In the aforementioned simulation test device of the casing inner wall cleaning simulation test equipment, the inner wall of the sliding sleeve is provided with a plurality of trapezoidal clips along its length direction, and the trapezoidal clips are clipped into the trapezoidal grooves on the outer wall of the fixed shaft.

[0010] Beneficial effects of the utility model: Compared with the prior art, the utility model is mainly composed of an opening and closing simulation casing, a tension sensor, a fixed shaft, a sliding sleeve and a DC servo motor, wherein the opening and closing simulation casing provided with a tension sensor can adjust the clamping force at the clamping point through the displayed data, and accurately measure the spring stiffness of the test cleaning product. In the experiment, the change of the clamping force can be monitored in real time to obtain first-hand data on the scraping effect of the test cleaning product. Moreover, the opening and closing simulation casing can also be driven to move up and down by the sliding sleeve, which can restore the actual working conditions of the casing inner wall cleaning tool in the well to the maximum extent, and ensure the accuracy of the test data.

[0011] In summary, the test component structure of the utility model is used to drive the simulation sleeve slidably sleeved on the test cleaning product to move up and down, simulate the cleaning process, and perform functional tests on the casing inner wall cleaning tools to obtain first-hand information on the use of various casing inner wall cleaning tools. Simulation tests are also conducted for different working conditions such as different clamping forces and movement speeds to obtain the best use parameter data, thereby guiding oilfield field technicians to select the optimal parameters. This ensures the accurate and efficient use of on-site casing inner wall cleaning tools and improves the overall technical level of oil and gas production in my country. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 for Figure 1 Schematic diagram of the top view structure.

[0014] Figure numerals: 1-opening and closing simulation sleeve, 2-tension sensor, 3-connecting rod, 4-fixed shaft, 5-sliding sleeve, 6-rack, 7-gear, 8-DC servo motor, 9-limiting end cover, 10-trapezoidal clamping strip. DETAILED DESCRIPTION

[0015] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0016] Embodiment of the utility model: a simulation test device of a casing inner wall cleaning simulation test device, such as Figure 1-2 As shown, it includes an opening and closing simulation sleeve 1 which is vertically arranged and opened at both ends, a tension sensor 2 is arranged at the clamping position of the opening and closing simulation sleeve 1, the opening and closing simulation sleeve 1 is connected to the lifting mechanism via a connecting rod 3, the lifting mechanism includes a vertically fixed fixed shaft 4, a sliding sleeve 5 is movably sleeved on the fixed shaft 4, a rack 6 is arranged on the inner side of the fixed shaft 4 along its height direction, the rack 6 is meshed with a gear 7, the gear 7 is installed in the installation cavity of the sliding sleeve 5, and the installation shaft of the gear 7 is fixedly connected to the output end of the DC servo motor 8.

[0017] During use, the test cleaning product to be tested is placed vertically into the open and close simulation sleeve 1, and the test cleaning product is fixed by the device, and then the open and close simulation sleeve 1 is driven up and down by the lifting mechanism to simulate the cleaning process of the sleeve by the cleaning product. The DC servo motor 8 can drive the gear 7 to rotate during rotation, and the gear 7 can move up and down along the rack 6 during the meshing process with the rack 6, thereby driving the sliding sleeve 5 to move up and down along the fixed shaft 4.

[0018] The opening and closing simulation sleeve 1 includes two semicircular sleeves with openings facing each other, one end of the two semicircular sleeves with openings facing each other is connected by a rotating shaft, and the other end forms a horizontal extension section, and the two extension sections are connected by a tension sensor 2. During use, the tension sensor 2 is used to display the magnitude of the clamping force at the extension section of the two semicircular sleeves, and the magnitude of the force is displayed on the display unit. The operator can adjust the magnitude of the clamping force at the clamping point through the displayed data to accurately measure the spring stiffness of the test cleaning product.

[0019] The top end of the fixed shaft 4 is threadedly sleeved with a limiting end cover 9 to prevent the sliding bearing 5 from falling off the fixed shaft 4 during the upward sliding process along the fixed shaft 4 .

[0020] The inner wall of the sliding sleeve 5 is provided with a plurality of trapezoidal clips 10 along its length direction, and the trapezoidal clips 10 are inserted into the trapezoidal slide grooves on the outer wall of the fixed shaft 4. Through the cooperation of the trapezoidal clips 10 and the trapezoidal slide grooves, the sliding bearing 5 is ensured to move up and down smoothly to avoid shaking during its movement.

[0021] The main functions of the utility model are: simulating the clamping of the casing and simulating the up and down movement of the casing.

[0022] a. Clamping of the simulated sleeve: an opening and closing simulated sleeve 1 is used. The opening and closing simulated sleeve 1 can more conveniently clamp the test product. A tension sensor 2 is provided at the clamping position. The clamping force at the clamping position can be adjusted according to the displayed data to accurately measure the spring stiffness of the test product. In the experiment, the change of the clamping force can be monitored in real time to obtain first-hand data on the scraping effect of the product.

[0023] b. Simulate the up and down movement of the casing: Use a DC servo motor 8 to change the direction and speed of the motor by changing the direction and current of the DC power. At the same time, the gear 7 and the rack 6 drive the sliding sleeve 5 to move up and down on the fixed shaft 4, thereby simulating the up and down movement of the casing. The DC servo motor 8 can adjust the corresponding rotation direction and speed by the direction and current of the DC power to achieve up and down movement at different speeds. The actual working conditions of the casing inner wall cleaning tool in the well are restored to the maximum extent to ensure the accuracy of the test data.

Claims

1. A simulation test device for a casing inner wall cleaning simulation test device, characterized in that: The invention comprises an opening and closing simulation sleeve (1) which is arranged vertically and has openings at both ends. A tension sensor (2) is arranged at a clamping position of the opening and closing simulation sleeve (1). The opening and closing simulation sleeve (1) is connected to a lifting mechanism via a connecting rod (3). The lifting mechanism comprises a vertically fixed fixed shaft (4). A sliding shaft sleeve (5) is movably sleeved on the fixed shaft (4). A rack (6) is arranged on the inner side of the fixed shaft (4) along its height direction. The rack (6) meshes with a gear (7). The gear (7) is installed in a mounting cavity of the sliding shaft sleeve (5). The mounting shaft of the gear (7) is fixedly connected to the output end of a DC servo motor (8).

2. The simulation test device of the casing inner wall cleaning simulation test equipment according to claim 1, characterized in that: The opening and closing simulation sleeve (1) comprises two semicircular sleeves with openings facing each other, one end of the two semicircular sleeves with openings facing each other is rotatably connected via a rotating shaft, and the other end forms a horizontal outward extension section, and the two extension sections are connected via a tension sensor (2).

3. The simulation test device of the casing inner wall cleaning simulation test equipment according to claim 1, characterized in that: The top end of the fixed shaft (4) is threadedly sleeved with a limiting end cover (9).

4. The simulation test device of the casing inner wall cleaning simulation test equipment according to claim 1, characterized in that: The inner wall of the sliding sleeve (5) is provided with a plurality of trapezoidal clips (10) along its length direction, and the trapezoidal clips (10) are clipped into the trapezoidal sliding grooves on the outer wall of the fixed shaft (4).

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