Experiment method for packer working performance and apparatus thereof

An experimental method and packer technology, applied in measuring devices, sealing/packing, instruments, etc., can solve problems such as gaps in packer systems, and achieve the effects of small initial investment, simple structure, and high sensitivity

Inactive Publication Date: 2007-08-29
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above mature research work is all about the research on the local parts of the packer,...

Method used

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  • Experiment method for packer working performance and apparatus thereof
  • Experiment method for packer working performance and apparatus thereof

Examples

Experimental program
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Effect test

Embodiment

[0018] 1. Experimental packer: Y341-148 type packer

[0019] 2. Manufacture of experimental casing: 7in casing is processed. The length of the test casing is 1200mm. From the top to the bottom of the casing, a hole with a diameter of Ф10 is drilled in a spiral shape every 10mm in the axial direction and every 60° in the circumferential direction within the length of 400mm, a total of 40 holes.

[0020] 3. Install the displacement sensor on the spacer ring of the Y341-148 packer. The packer is connected with a plug at the bottom and a tubing hanger at the top.

[0021] 4. Install the pressure sensor. The mandrel of the pressure sensor penetrates through the small hole of the test casing, and the end face of the mandrel is flat with the wall of the casing, and a total of 40 pressure sensors are distributed.

[0022] 5. The upper and lower joints of the center pipe of the packer and the test casing are respectively connected to electric pressure test pumps.

[0023] 6. With a ...

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PUM

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Abstract

The invention relates to an experiment method and device for packer operating performance in oil field, testing contact stress and axial displacement of packer rubber tube through making pressurization, pressure stabilization and pressure removal on the experiment device to test the amplitudes and distribution rules of stress and strain of surface characteristic points of the packer parts under the action of external load. And the experiment method: applying pressure on the central pipe of the packer by electric pressure test pump according to the designed load step, setting the packer and keeping the pressure stable for a period of time and besides, testing the stress data on surface characteristic points of the rubber tube in this course; and finally removing the annulus pressure in the upper part of the packer, and then slowly removing the inner pressure in the central pipe and testing the stress data of the surface characteristic points in this course. And the experiment device: packer central pipe and upper and lower joints of the experiment sleeve are respectively connected with electric pressure test pump; the surface of the experiment sleeve is axially, spirally and equidistantly distributed with bores in the part measuring range, and pressure sensors are installed in the bores. And the invention has features of simple structure, high working reliability and higher sensitivity.

Description

technical field [0001] The invention relates to an experimental method and device for the working performance of an oil field downhole packer, which belongs to the field of petroleum exploration and development. Background technique [0002] As many domestic oil fields have entered the middle and late stages of development, the water content of the oil layers has increased, the conflict between layers has intensified, the pressure difference between the water blocking layer and the oil production layer has become larger, the oil wells developed are getting deeper and deeper, and the geological environment is getting worse. worse. Faced with complex working conditions and harsh natural environments, the packer has higher performance requirements, more reliable sealing performance, high temperature and high pressure resistance, simple structure, flexible and convenient use, and longer service life. Therefore, at present, research on packers at home and abroad is mainly focuse...

Claims

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Application Information

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IPC IPC(8): E21B47/00G01N3/02E21B33/12
Inventor 刘清友湛精华王国荣何祖清何霞黄云杨启明
Owner SOUTHWEST PETROLEUM UNIV
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