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Embedded simulating test unit and process of underwell tool stress

A technology of simulation testing and downhole tools, which is applied in the field of embedded simulation testing devices, can solve the problems of large testing errors, low testing efficiency, easy damage, etc., and achieve the goal of improving testing accuracy, testing data authenticity and reliability, and overcoming testing errors. Effect

Inactive Publication Date: 2004-11-24
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the test, it is necessary to simulate the downhole working conditions, such as water pressure and other working conditions, so the sensor works in a harsh environment, the test error is large, it is easy to damage, and the test work efficiency is low

Method used

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  • Embedded simulating test unit and process of underwell tool stress
  • Embedded simulating test unit and process of underwell tool stress
  • Embedded simulating test unit and process of underwell tool stress

Examples

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Embodiment Construction

[0012] The test device and process applicable to the tension pressure of downhole tools use three embedded tension pressure sensors and a specific structure to realize the online detection of the tension pressure of downhole tools. The process is as follows: figure 1 As shown, inside the traveling beam 1, three axial tension and compression sensors 2 are evenly installed on the outside of the hollow structure, one end of each sensor is installed on the traveling beam with a fixing bolt 3, and the other end is installed on a force-bearing circle. On disc 5, in addition to installing 3 sensors on the stressed disc, 3 guide holes are evenly distributed, and 3 guide rods 6 pass through the 3 guide holes respectively, and guide rod bushings are installed between the guide rods and the guide holes 7. There is a sliding fit between the guide rod and the bushing, and one end of the guide rod is fixed to the traveling beam. When the traveling beam moves upward along the guide column 8, ...

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Abstract

The invention discloses an embedded simulation test device and method for stress of downhole tools, belonging to the tension and compression load test technology. The device is characterized in that the traveling beam adopts a hollow structure, and a force-bearing disc is arranged inside, and the disc is distributed with three tension and pressure sensors and guides, and each sensor is followed by an amplifier and a shared adder, and the adder followed by a digital display. The test method: the moving beam runs upwards, the sensor is under pressure, and the voltage signal it outputs is a 0-5V voltage signal through the amplifier and adder, which corresponds to the tension test value of the tool under test. The moving beam moves downward, the sensor is pulled, and the voltage signal it outputs is a 0-5V voltage signal through the amplifier and adder, which corresponds to the pressure test value of the tool under test. The invention has the advantages that the sensor is not affected by the external experimental medium, has high testing precision, long service life and high working efficiency.

Description

technical field [0001] The invention relates to an embedded simulation test device and method for downhole tool stress, which belongs to the tension and compression load test technology. Background technique [0002] The downhole tools in the oil field include different specifications and types of drill bits, drill pipes, packers, slips, casings, etc. Their mechanical performance is related to the production safety and production efficiency of the oil well. In the test of mechanical performance, the test of tension and pressure are the two most important parameters. Therefore, it is of great significance to simulate and test the tension and pressure of downhole tools on the ground. [0003] The existing tension and pressure test device consists of a guide column, a traveling beam, a hydraulic cylinder, a tool connection assembly and an electrical measurement system. The electrical measurement system includes a pull pressure sensor and an ampl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/00
Inventor 傅星胡小唐陈峰胡晓东郭彤李梦超
Owner TIANJIN UNIV
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