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Embedded simulating test unit and process of underwell tool stress

A technology for simulating testing and downhole tools, applied in the field of embedded simulating testing devices, can solve problems such as easy damage, large testing error, low testing work efficiency, etc., so as to improve test accuracy, improve service life and work efficiency, and achieve true test data. believable effect

Inactive Publication Date: 2004-04-28
TIANJIN UNIV
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  • Summary
  • 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 present invention discloses a embedded simulating test unit and process of subsurface tool stress, and belongs to the field of pull load testing technology. The simulating test unit features that inside the hollow walking beam, there are one strained disc, three evenly distributed puss stress sensors and guider, three amplifiers, one shared adder and one digital display. The test process includes the walking beam to run upwards, the pressurized sensors to output voltage signals, the amplifiers to amplify, the adder to output -5-0 V voltage signal corresponding to the tested pull force of the tested tool; and the walking beam to run downwards, the pulled sensors to output voltage signals, the amplifiers to amplify, the adder to output 0-5 V voltage signal corresponding to the tested pressure force of the tested tool. The present invention has the advantages of no effect on the sensors of outer tested medium, high test precision, long service life and high work efficiency.

Description

technical field [0001] The invention relates to an embedded simulation test device and process for downhole tool stress, which belongs to the tension and compression load test technology. Background technique [0002] The merging 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 ampli...

Claims

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Application Information

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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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