Drilling tool core tube testing device and method

Abstract

A testing device and method for a core tube of a drilling tool relates to the technical field of drilling machine tool testing, and includes a base frame, a box, a hydraulic motor, an electric heater, a core tube installation assembly, a vibration sensor, and a transmission shaft, wherein the specific structure of the core tube installation assembly is as follows: the core tube to be tested is installed between a sleeve and a core shaft, the two ends of the core tube to be tested are pressed with end covers, and the end covers are fixedly connected to the two ends of the sleeve, and the end cover on the left side is also fixedly connected to the right end of the transmission shaft through a coupling; the right end of the core shaft is fixedly connected to the tailstock. The transmission shaft drives the core tube to be tested to rotate, and the core tube rotates and rubs on the surface of the core shaft, so as to test the wear resistance of the inner wall of the core tube. The present invention can complete the performance test and life test of the core tube of the drilling machine tool in a simulated environment.

Description

Technical Field

[0001] The invention relates to the technical field of drilling tool testing, and in particular to a drilling tool core tube testing device and method. Background Art

[0002] In ultra-deep well drilling, due to the extreme and complex actual working environment, testing the drill core tube directly underground is not only difficult to collect data, but also may face many unknown risks, and increase R&D costs. Therefore, it is particularly important to develop a drill core tube testing device. Through this simulation test device, the drill core tube can be fully tested and optimized on the ground, thereby reducing the number of tests in the actual underground environment, reducing risks and costs. Summary of the invention

[0003] Based on the above problems, the purpose of the present invention is to provide a drill core tube testing device and method, which can simulate the actual working conditions of ultra-deep wells to the greatest extent, display the invisible and complex underground environment through a test bench, and complete the performance test and life test of the drill core tube in a simulated environment.

[0004] The technical solution adopted by the present invention to achieve its invention purpose is: a drilling tool core tube testing device, including a base frame, a box body, a box cover, a hydraulic motor, an electric heater, a core tube installation assembly, and a transmission shaft, wherein: The box body is fixedly installed on the base frame, the box cover is placed on the box body, and the box body is filled with high-temperature oil; the electric heater is fixedly installed in the box body and is located below the oil level of the high-temperature oil; The specific structure of the core tube installation assembly is: The core tube to be tested is installed between the sleeve and the mandrel, the two ends of the core tube to be tested are pressed by end covers, and the end covers are fixedly connected to the two ends of the sleeve, and the end cover on the left side is also fixedly connected to the right end of the transmission shaft through a coupling; the right end of the mandrel is fixedly connected to the tailstock, and the left end of the mandrel is connected to the coupling through a support bearing; the mandrel, coupling, tailstock, and sleeve are all installed in the box; The transmission shaft is installed in the box through a bearing seat and connected to the output shaft of the hydraulic motor through a chain sprocket transmission mechanism; The hydraulic motor is fixedly mounted on a base frame outside the box body.

[0005] The beneficial effects of the present invention are: It can simulate the actual working conditions of ultra-deep wells to the greatest extent, display the invisible and complex underground environment through the test platform, and complete the performance test and life test of the core tube in the drilling rig in a simulated environment. It can discover the defects and deficiencies of the tested parts in advance, provide test data for the design of the tested parts, thereby improving the structure and reducing R&D costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 A schematic diagram of a three-dimensional appearance of an embodiment of the present invention; Figure 2 A top view of a core tube installation assembly and related components according to an embodiment of the present invention; Figure 3 for Figure 2 Section view along AA; DETAILED DESCRIPTION

[0007] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0008] Figures 1 to 3 A specific embodiment of the drilling tool core tube testing device provided by the present invention is shown, comprising a base frame 1, a box body 2, a box cover 3, a hydraulic motor 6, an electric heater 13, a core tube installation assembly, and a transmission shaft 904, wherein: The box body 2 is fixedly mounted on the base frame 1, and the box cover 3 is placed on the box body 2. The box body 2 is filled with high-temperature oil; the electric heater 13 is fixedly mounted in the box body 2 and is located below the oil level of the high-temperature oil; The specific structure of the core tube installation assembly is: The core tube 12 to be tested is installed between the sleeve 9012 and the mandrel 909. The two ends of the core tube 12 to be tested are pressed by end covers 9013, and the end covers 9013 are fixedly connected to the two ends of the sleeve 9012 by screws. The end cover 9013 on the left side is also fixedly connected to the right end of the transmission shaft 904 through a coupling 9010; the right end of the mandrel 909 is fixedly connected to the tailstock 9011 by screws, and the left end of the mandrel 909 is connected to the coupling 9010 through a support bearing 9014, and the support bearing 9014 supports the left end of the mandrel 909; the mandrel 909, the coupling 9010, the tailstock 9011, and the sleeve 9012 are all installed in the box 2; The transmission shaft 904 is installed in the box body 2 through a bearing seat, and is connected to the output shaft of the hydraulic motor 6 through a chain sprocket transmission mechanism; The vibration sensor is mounted on the sleeve; The hydraulic motor 6 is fixedly mounted on the base frame 1 outside the box body 2 .

[0009] The core tube 12 to be tested is driven by power to rotate in high-temperature oil.

[0010] The method and principle of using the testing device of the present invention to test the core pipe of a drilling machine are as follows: The mandrel 909 remains stationary, and the transmission shaft 904 drives the core tube 12 to be tested to rotate through the coupling 9010, the end cover 9013, and the sleeve 9012 in sequence. The core tube 12 rotates and rubs on the surface of the mandrel 909, which can test the wear resistance of the inner wall of the core tube 12. The vibration sensor can test the vibration of the core tube in the working state.

[0011] The above embodiments of the present invention are merely examples for illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes and modifications can be made based on the above description. It is impossible to list all the embodiments here. Any obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A drilling tool core tube testing device and method, characterized in that: It comprises a base frame (1), a box body (2), a box cover (3), a hydraulic motor (6), an electric heater (13), a core tube installation assembly, a vibration sensor, and a transmission shaft (904), wherein: The box body (2) is fixedly mounted on the base frame (1), the box cover (3) is placed on the box body (2), and the box body (2) is filled with high-temperature oil; the electric heater (11) is fixedly mounted in the box body (2) and is located below the oil level of the high-temperature oil; The specific structure of the core tube installation assembly is: The core tube (12) to be tested is installed between the sleeve (912) and the mandrel (909); the two ends of the core tube (12) to be tested are pressed by end covers (9013), and the end covers (9013) are fixedly connected to the two ends of the sleeve (9012); the left end cover (9013) is also fixedly connected to the right end of the transmission shaft (904) through a coupling (9010); the right end of the mandrel (909) is fixedly connected to the tailstock (9011), and the left end of the mandrel (909) is connected to the coupling (9010) through a support bearing (9014); the mandrel (909), the coupling (9010), the tailstock (9011), and the sleeve (9012) are all installed in a box (2).

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