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Unsealing tension test method for packer

A tensile test and packer technology, applied in force/torque/work measuring instruments, instruments, measuring devices, etc., can solve the problems of low fatigue resistance of rubber cartridges, failure of packers, laxity, etc., to ensure delivery Use quality effects

Inactive Publication Date: 2013-05-15
刘剑国
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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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  • Unsealing tension test method for packer

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Experimental program
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Effect test

Embodiment

[0026] The unsealing tension test method for the packer that the present invention relates to comprises the following steps:

[0027] (a) After testing the sealing performance indicators of the packer, operate the control process to release pressure and unseal, remove the medium-pressure pipeline and simple wellhead pressure cap, lower the 10t chain-down hook, and hang it on the pressure test joint;

[0028] (b) Lift up the crimping joint, observe the change of the pointer of the weight indicator, and record the maximum reading of the pointer at the moment when the packer is unsealed;

[0029] (c) The maximum reading is the unsealing pulling force of the packer. According to the unsealing pulling force of the packer, it can be judged whether the packer is flexible and reliable in unsealing.

[0030] The apparatus used in the above method is as figure 1 As shown, it is mainly composed of a support frame 1, a suspension device arranged on the support frame 1, and a packer 2 con...

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PUM

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Abstract

The invention discloses an unsealing tension test method for a packer. The unsealing tension test method for the packer includes the steps: (a) testing various sealing property indexes of the packer, operating a control process to decompress and unseal, disassembling a middle-pressure pipeline and a simply constructed wellhead pressing cap, lowering a 10 t chain block lifting hook, and hanging the 10 t chain block lifting hook on a pressure test connector; (b) lifting the pressure test connector, watching changes of the pointer of a weight indicator, and recoding maximum reading of the pointer in the moment of packer unsealing; and (c) regarding the maximum reading as an unsealing tension value of the packer, and judging if the packer is flexible and reliable in unsealing according to the unsealing tension value of the packer. According to the unsealing tension test method for the packer, through the simulation of downhole working states of the packer, the unsealing tension of the packer is tested and factory use quality of the packer is guaranteed.

Description

technical field [0001] The invention relates to a method for testing the unsealing tension 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 oil fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/00
Inventor 刘剑国
Owner 刘剑国