Rock permeability test device

A testing device and permeability technology, applied in measurement devices, permeability/surface area analysis, suspension and porous material analysis, etc. The effect of accurate measurement data

Inactive Publication Date: 2014-04-23
PETROCHINA CO LTD
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  • Abstract
  • Description
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Problems solved by technology

In order to meet the most extensive measurement needs, the volume of the cavity at the downstream end of the holder is often large. When measuring the permeability of ordinary rocks, the gas at the upstream end of the holder can pass through the core relatively quickly, so that the downstream end of the holder can pass through the core relatively quickly. The pressure in the cavity will change, but for rocks with low permeability, the pressure change in the cavity at the downstream end of the holder is small and difficult to detect, and it is difficult to accurately measure the permeability

Method used

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  • Rock permeability test device

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0022] Such as figure 1 As shown, the present invention provides a rock permeability testing device, which is used for testing the permeability of rock cores. The core permeability testing apparatus includes a testing system 110 . The testing system 110 includes a rock core holder 20, which is clamped with a rock core 10. The rock core holder 20 has an inlet port 21 and an outlet port 23, and the inlet port 21 is connected to a cylinder 30; a pressurizing device 4...

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Abstract

The invention provides a rock permeability test device. The rock permeability test device comprises a test system which comprises a rock core clamper, a pressurizing device and a first cavity, wherein a rock core is clamped in the rock core clamper; the rock core clamper is provided with an inlet end and an outlet end; the inlet end is connected with an air cylinder; the pressurizing device is connected with the rock core clamper; one end of the first cavity is connected with the outlet end of the rock core clamper, and the other end of the first cavity is connected with a second cavity. The rock permeability test device disclosed by the invention can measure the permeability of rocks with any permeability, and the test range is wide.

Description

technical field [0001] The invention relates to a testing device, in particular to a rock permeability testing device in the technical field of petroleum and natural gas exploration and development. Background technique [0002] Permeability is a parameter that characterizes the ability of soil or rock to conduct gas. In the field of oil and natural gas exploration, permeability is an important index used to evaluate the quality of formations containing oil or natural gas. [0003] The commonly used permeability testing methods are mainly steady-state method and pulse decay method. Among them, the process of testing the core leakage rate by the steady-state method is: let the upstream and downstream ends of the sandstone core be under a stable pressure difference, the gas can form a stable flow rate when passing through the core, measure the volume of the gas passing through the core within a certain period of time, and further The calculation yields the permeability. Due...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
Inventor 薛华庆王红岩刘洪林闫刚
Owner PETROCHINA CO LTD
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