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A device and method for measuring permeability of tight rock core

A core permeability and measuring device technology, which is applied in the direction of measuring devices, permeability/surface area analysis, suspension and porous material analysis, etc., can solve the problems of difficult flow measurement, diffusion and slippage, etc., and achieve the effect of simple operation

Active Publication Date: 2021-04-13
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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  • A device and method for measuring permeability of tight rock core
  • A device and method for measuring permeability of tight rock core
  • A device and method for measuring permeability of tight rock core

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[0044]DETAILED DESCRIPTION OF THE INVENTION The present invention will be described below to understand the present invention, but it should be understood, and the present invention is not limited to the scope of the specific embodiments, and in terms of ordinary skill in the art, as long as various changes Within the spirit and scope of the invention appended claims, it is apparent from the spirit and scope of the appended claims, and all inventions of the inventive concepts are all protected.

[0045]Such asfigure 1As shown, a rocky heart permeability measuring device includes a rock core holder 10, a standard gas mixture supply system 1, a peripheral pump 13, a vacuum pump 19, a gas chromatograph 16, and a constant temperature box 22; rock core holder 10 intake The mouth end is connected to the standard gas mixture supply system 1 through the line, and the intake port end is provided with an upstream pressure regulating control valve 5 and an upstream fine pressure Table 6 through a...

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Abstract

The invention discloses a tight rock core permeability measuring device and a measuring method, comprising a core holder, a standard gas mixture supply system, a confining pressure pump, a vacuum pump, a gas chromatograph and a constant temperature box; The pipeline is connected with a standard gas mixture supply system, and a method for measuring the permeability of a tight rock core with a tight rock core permeability measurement device includes the following steps: S1: Put the rock sample to be tested with a core length of L into the rock sample chamber, and use The vacuum pump evacuates the rock sample and the gas in the device; S2: Turn on the confining pressure pump, increase the confining pressure of the confining pressure chamber to the required confining pressure value, and keep the pressure constant; solve the problem of the existing steady state method for measuring permeability The problems of flow measurement are difficult, and the problems of diffusion and slippage are not considered.

Description

Technical field[0001]The present invention relates to the field of mihadion permeability measurement, particularly a mitogenic permeability measuring device and measurement method.Background technique[0002]In the field of oil and gas field development, the penetration rate is an important parameter for evaluating reservoir materials, and there is a need for a large amount of measurement of the rock-like penetration before developing a development plan. In recent years, with the decrease in the quantity of conventional oil reservoirs, the development of high oil reservoirs, peryland gas reservoirs, etc. have been greatly concerned. The significant feature of such oil and gas reservoirs is that the penetration is low, and the conventional core analysis means is poor in applicability. In particular, shale samples, the permeability is usually larger in the ND level, and the conventional permeability measurement method has a large error. Also, even the same shale sample, the results of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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