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Device and method for testing rock permeability under different pore fluid pressure

A pore fluid and permeability technology, which is used in measurement devices, permeability/surface area analysis, suspension and porous material analysis, etc. It can solve the problems of low control accuracy, poor reliability, and high price, and achieve strong adaptability , low cost, good effect of back pressure stabilization

Inactive Publication Date: 2012-08-29
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to achieve high pore fluid pressure in the core, the device used to test rock permeability under different pore fluid pressures in the prior art has problems such as low control accuracy, resulting in poor reliability and high price

Method used

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  • Device and method for testing rock permeability under different pore fluid pressure
  • Device and method for testing rock permeability under different pore fluid pressure

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Embodiment Construction

[0019] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0020] Such as figure 1 The shown structure diagram of the device for testing permeability of the present invention is a device for testing rock permeability under different pore fluid pressures, including a high-pressure gas source generating device, a back pressure control device, a data detection and display device, and the high-pressure gas The source generation device is sequentially connected with the back pressure control device, data detection and display device; the back pressure control device includes a needle throttle valve 5 and a core holder 4, and the needle throttle valve 5 is arranged on the core holder The outlet end of holder 4. By using the needle-shaped throttle valve 5 to replace the back pressure valve in the prior art, the fluid pressure under different pores received by the rock core in the core holder ...

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Abstract

The invention belongs to the field of rock permeability test, and discloses a device for testing rock permeability under different pore fluid pressure. The device is characterized by comprising a high-pressure gas source generating device, a back pressure control device and a data detection and display device, wherein the high-pressure gas source generating device is connected with the back pressure control device, and the data detection and display device is connected with the back pressure control device; and the back pressure control device comprises a needle-shaped throttling valve and a rock core holder, wherein the needle-shaped throttling valve is arranged at the outlet end of the rock core holder. The invention also discloses a method for testing the rock permeability under different pore fluid pressure. A back pressure valve in the prior art is replaced by using the needle-shaped throttling valve to adjust the pressure of the rock core in the rock core holder under different pore fluid, the device has good back pressure stabilizing effect, and meanwhile, the processing production technology for the throttling valve is mature and has low cost and strong adaptability.

Description

technical field [0001] The invention relates to a device for testing rock permeability, in particular to a device and method for testing rock permeability under different pore fluid pressures. Background technique [0002] Permeability is one of the most important basic physical parameters of rock. Under a certain pressure difference, the property of rock allowing fluid to pass is called permeability. Accurately measure the permeability of rock under formation conditions, especially under high pore fluid pressure, and obtain The change law of permeability with formation pore fluid pressure is of great significance for understanding reservoirs and adjusting oil and gas reservoir development plans. [0003] At present, the test of permeability and its stress sensitivity is often based on industry standards SY / T5358-2002 and SY / T5336-2006, and the measurement is carried out under the condition that the pore fluid pressure is one atmospheric pressure in the room. However, the r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/08G01N7/10
Inventor 肖文联陈一健王生奎李闽赵金洲
Owner SOUTHWEST PETROLEUM UNIV
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