Dense core permeability measuring device and method

A technology of core permeability and measuring device, which is applied in measuring device, permeability/surface area analysis, suspension and porous material analysis, etc. It can solve the problems of difficult flow measurement, not considering diffusion and slippage, etc., and achieve the effect of simple operation.

Active Publication Date: 2019-09-06
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology

[0004] In order to solve the problems existing in the prior art, the present invention provides a tight core permeability measurement device and measurement method, which solves the problems of difficult flow measurement and no consideration of diffusion and slippage in the process of measuring the permeability of the existing steady-state method. question

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  • Dense core permeability measuring device and method

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[0044] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0045] Such as figure 1 As shown, a tight rock core permeability measurement device includes a core holder 10, a standard gas mixture supply system 1, a confining pressure pump 13, a vacuum pump 19, a gas chromatograph 16 and a thermostat 22; The mouth end is connected to the standard gas mixture supply system 1 through a pipeline, the inlet end of the core holder 10 is connected to the standard gas mixture supply system 1 ...

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Abstract

The invention discloses a dense core permeability measuring device and method. The dense core permeability measuring device comprises a core holder, a standard gas mixture supply system, a confining pressure pump, a vacuum pump, a gas chromatograph and a thermostat, wherein an air inlet end of the core holder is connected with the standard gas mixture supply system through a pipeline. The method for measuring the dense core permeability of the dense core permeability measuring device comprises the following steps: S1, placing a rock sample to be measured with a length L into a rock sample cavity, and performing vacuum pumping on the rock sample and gas in the device by using the vacuum pump; and S2, starting the confining pressure pump, increasing the confining pressure of a confining pressure cavity to a required confining pressure value, and keeping the pressure constant. Through adoption of the dense core permeability measuring device and method, the problems of difficulty in measuring flow and no consideration of dispersion and slip in the process of measuring the permeability with the existing steady state method are solved.

Description

technical field [0001] The invention relates to the field of tight rock core permeability measurement, in particular to a tight rock core permeability measurement device and a measurement method. Background technique [0002] In the field of oil and gas field development, the permeability is an important parameter to evaluate the physical properties of the reservoir, and a large number of measurements of the permeability of rock samples are required before the development plan is formulated. In recent years, with the reduction of the number of conventional oil and gas reservoirs, the development of unconventional oil and gas reservoirs such as tight oil and gas reservoirs and shale oil and gas reservoirs has received greater attention. The remarkable feature of this kind of oil and gas reservoirs is low permeability, and the conventional core analysis methods are not applicable to them. In particular, the permeability of shale samples is usually at the nD level, and convent...

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Application Information

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IPC IPC(8): G01N15/08G01N13/00G01N30/02
CPCG01N13/00G01N15/082G01N30/02G01N2013/003
Inventor 方全堂李政澜魏明强
Owner SOUTHWEST PETROLEUM UNIV
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