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Rock permeability testing system and testing method

A testing system, permeability technology, applied in permeability/surface area analysis, measuring device, suspension and porous material analysis, etc., can solve the problems of low measurement accuracy and inability to measure

Active Publication Date: 2014-02-12
HOHAI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Especially in the current emerging shale gas development, for ultra-low permeability (permeability less than 10 -21 m 2 ), the measurement accuracy of the existing equipment is not high, and it is even impossible to measure

Method used

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  • Rock permeability testing system and testing method

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Embodiment 1

[0062] Embodiment 1: rock permeability testing system of the present invention, such as figure 1 As shown, it includes: confining pressure control device 1, core pressure chamber 2, porosity measurement system 3, upstream gas storage cylinder 4, downstream gas storage cylinder 5, upstream air pressure recording table 6, downstream air pressure recording table 7, upstream and downstream air pressure difference Record table 8, high-purity argon cylinder 9 and high-precision air pressure recorder 10; the confining pressure control device 1 is connected with the rock core pressure chamber 2 to provide hydraulic pressure for the rock core pressure chamber, and the confining pressure control device 1 is a hydraulic pump. There is a recording table in which the pressure value can be freely controlled; the core pressure chamber 2 is as figure 2 As shown, its upper end is connected with the first interface of a four-way device; the second interface of the four-way device is connected ...

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PUM

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Abstract

The invention discloses a rock permeability testing system. The rock permeability testing system is characterized by comprising a confining pressure control device (1), a rock core pressure chamber (2), a porosity measurement system (3), an upstream gas storage cylinder (4), a downstream gas storage cylinder (5), an upstream air pressure recording meter (6), a downstream air pressure recording meter (7), an upstream-downstream air pressure recording meter (8), a high-purity argon bottle (9) and a high-precision air pressure recording instrument (10). The invention further discloses a method for testing the permeability by utilizing the rock permeability testing system. The rock permeability testing system has the advantages that the operation is simple, the to-be-measured physical quantity is little, and the measurement range is wide; the system can be used for measuring normal rocks with the permeability higher than 10-15 m<2>, low-permeability rocks and even ultralow-permeability rocks, and the measuring precision reaches 10-24 m<2>.

Description

technical field [0001] The invention relates to a rock permeability testing system and testing method. Background technique [0002] Rock is a naturally produced mineral or glass aggregate with a stable appearance, which is combined in a certain way. Rocks are divided into igneous rocks, sedimentary rocks and metamorphic rocks according to their origin. Rocks are the material basis of the earth's crust and upper mantle. Due to different formations, rocks have undergone physical or chemical changes to form today's rich and colorful geological forms. [0003] Many large-scale projects are required to be built on rocks, and the permeability characteristics of rocks have an important impact on the construction and operation of these large-scale projects. Therefore, how to accurately measure the permeability characteristics of rocks is very important. There are many factors affecting rock permeability, among which permeability and porosity are the most important factors. As a ...

Claims

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Application Information

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IPC IPC(8): G01N15/08
Inventor 徐卫亚贾朝军冯树荣赵海斌梅松华王如宾闫龙张强
Owner HOHAI UNIV
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