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Anti-fatigue performance test method used for packer

A test method and packer technology, which are used in the testing of machine/structural components, the testing of mechanical components, and the measurement of liquid tightness using liquid/vacuum degree. The rubber cartridge is damaged and sealed, so as to ensure the quality of factory use.

Inactive Publication Date: 2013-05-08
张洲
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] (3) The anti-fatigue strength of the rubber tube is low. Under the action of high pressure and high temperature, the rubber tube is damaged or the seal is not tight, which will cause the packer to fail in a short time

Method used

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  • Anti-fatigue performance test method used for packer

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Experimental program
Comparison scheme
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Embodiment

[0030] The anti-fatigue performance testing method for packers that the present invention relates to is characterized in that it comprises the following steps:

[0031] (a) Adjust the electric contact thermometer to the temperature required by the experiment;

[0032] (b) Start the electric heating tube to make the temperature of the heating pool reach 120°C;

[0033] (c) continuous circulation heating of inner and outer casing annulus;

[0034] (d) Start the pressure test pump to unseal the packer seat for two cycles, and continue to stabilize the pressure. The pressure drop does not exceed 10% of the working pressure difference. No leakage or leakage proves that the anti-fatigue performance of the packer rubber cylinder is qualified, otherwise It proves that the anti-fatigue performance of the packer rubber cylinder is unqualified.

[0035] In the step (a), the experiment requires a temperature of 120°C.

[0036] In the step (b), the temperature of the heating pool reache...

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PUM

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Abstract

The invention discloses an anti-fatigue performance test method used for a packer. The test method comprises a first step of adjusting an electric contact temperature gauge to experiment required temperature, a second step of starting a heating tube to increase temperature of a heating bath to 120 DEG C, a third step of continuously heating an inner casing annulus and an outer casing annulus in a circulated mode, and a fourth step of starting a pressure testing pump for deblocking of a packer seat to two circulations, pressure is maintained continuously, pressure drawdown quantity is less than operating pressure differential by 10 %, qualified anti-fatigue performance of a packer rubber sleeve can be proved through non-seepage and non-leakage, and on the contrary, the anti-fatigue performance of the packer rubber sleeve is proved to be disqualified through seepage and leakage. Due to the facts that the working state of the packer in a pit is simulated, and the anti-fatigue performance of the packer is detected, factory-leaving use quality of the packer is guaranteed.

Description

technical field [0001] The invention relates to a method for testing the anti-fatigue performance of a packer. Background technique [0002] In crude oil production at home and abroad, mechanical oil recovery occupies the primary position, and in mechanical oil recovery, oil well pumps are the main ones. Oil well pump is one of the most basic, reliable and widely used oil pumping tools. According to statistics, the oil pump accounts for more than 90% of the mechanical oil production wells. The oil pump equipment plays a vital role in the entire crude oil production. The economic loss caused by the failure of the oil pumping device, especially the downhole device is extremely huge. Therefore, timely and accurate monitoring and judgment of the working status of the oil pump, and effective and timely processing of the failures that occur will not only greatly reduce the production cost of crude oil and obtain higher economic benefits, but will also help to further improve the...

Claims

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Application Information

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IPC IPC(8): G01M13/00G01M3/26
Inventor 张洲
Owner 张洲