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Compacted rock gas phase relative permeability measurement device and method

A relative permeability and compact rock technology, applied in the field of gas relative permeability measurement, to avoid systematic and human errors

Active Publication Date: 2017-06-09
SOUTHWEST PETROLEUM UNIV
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  • Claims
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Problems solved by technology

[0005] In view of the above-mentioned problems and deficiencies, the technical problem to be solved by the present invention is: how to provide a method that can quickly measure the gas relative permeability under the condition of considering the effect of capillary pressure, and can reduce the traditional measuring device and its measuring method. A gas-phase relative permeability measurement device that is cumbersome and easily leads to human error

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  • Compacted rock gas phase relative permeability measurement device and method
  • Compacted rock gas phase relative permeability measurement device and method
  • Compacted rock gas phase relative permeability measurement device and method

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Embodiment Construction

[0031] Such as figure 1 Shown: the present invention is a kind of device of non-steady-state method measuring gas relative permeability, and device structure characteristic is as follows: it is mainly composed of rock core holder 18, confining pressure pump 9, variable volume upstream pressure chamber 20, variable volume Downstream pressure chamber 21, high-pressure gas source 23, console 22 and nuclear magnetic resonance instrument 19 are composed;

[0032] The invention can be used to measure the gas phase relative permeability in the oil / gas two-phase seepage and the gas phase relative permeability in the gas / water two-phase seepage, and the gas phase relative permeability in the gas / water two-phase seepage will be described below.

[0033] The rock core for testing is loaded in the rock core holder 18, and a thermometer is arranged on the rock core holder. Both the variable-volume upstream pressure chamber 20 and the variable-volume downstream pressure chamber 21 can be a...

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Abstract

The invention discloses a compacted rock gas phase relative permeability measurement device and method. The measurement device comprises a rock core clamp, a confining pressure pump, a variable-volume upstream pressure chamber, a variable-volume downstream pressure chamber, a high-pressure gas source, a control table and a nuclear magnetic resonance spectrometer, an air outlet of a high-pressure air source is connected with an inlet of the variable-volume upstream pressure chamber sequentially through a valve a, a first pressure controller and a valve b, an outlet of the variable-volume downstream pressure chamber is connected with the rock core clamp through a valve c, the rock core clamp is connected with an inlet of the variable-volume downstream pressure chamber through a valve d, an outlet of the variable-volume downstream pressure chamber is connected with a pressure relief opening through a valve f, and the rock core clamp is arranged in a measuring cavity of the nuclear magnetic resonance spectrometer. The invention provides a measurement method based on the measurement device. The measurement device has the advantages that gas relative permeability of compacted rocks can be rapidly and effectively measured.

Description

technical field [0001] The invention relates to a device and a method for measuring gas phase relative permeability of tight rock, belonging to the field of gas relative permeability measurement. Background technique [0002] Natural gas resources in low-permeability tight reservoirs account for a large proportion of geological resources in my country. Accurately measuring the physical properties of such reservoir rocks (such as gas phase relative permeability) is very important for reservoir gas well production calculation, dynamic analysis, numerical simulation, etc. However, it is currently difficult to accurately measure the gas / water relative permeability of tight rocks. [0003] The existing laboratory tests of gas / water relative permeability refer to GB / T 28912-2012 (Method for Determination of Relative Permeability of Two-phase Fluids in Rocks), that is, the steady-state method and the unsteady-state method are used to measure the gas permeability. / water relative ...

Claims

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Application Information

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IPC IPC(8): G01N15/08
CPCG01N15/0806G01N15/0826Y02A90/30
Inventor 郑玲丽胡鹏轩李闽赵金洲肖文联魏铭江任席瑶
Owner SOUTHWEST PETROLEUM UNIV
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