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Device and method for testing displacement, steady-state permeability and transient permeability of low-permeability rock

A technology for testing devices and permeability, which is applied in the direction of measuring devices, permeability/surface area analysis, suspension and porous material analysis, etc., and can solve the problems that the instrument cannot be used, and different fluids cannot be displaced.

Active Publication Date: 2020-06-19
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

[0006] The invention provides a low-permeability rock displacement, steady-state and transient permeability testing device and method, aiming to solve the problem that the same instrument cannot be used to displace different fluids and the same equipment cannot be used to perform different fluid displacements in the prior art. Problems with Permeability Method Determination

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  • Device and method for testing displacement, steady-state permeability and transient permeability of low-permeability rock
  • Device and method for testing displacement, steady-state permeability and transient permeability of low-permeability rock
  • Device and method for testing displacement, steady-state permeability and transient permeability of low-permeability rock

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Embodiment Construction

[0115] In order to better explain the present invention and facilitate understanding, the present invention will be described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0116] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.

[0117] In addition, in the present invention, descriptions such as "first", "second" and so on are used for description purposes only, and should not be understood as indicating or implying their relative importance or implicitly indicating the quantity of indicated technical features. Thus, the features defined as "first" and "second" ma...

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Abstract

The invention relates to a device and method for testing displacement, steady-state and transient-state permeability of a low-permeability rock. In the device, an outlet of a power pump is connected with an inlet of the clamping chamber through piston containers, an upstream stop valve, a pulse stop valve, an upstream pressure sensor and an upstream vacuum stop valve which are sequentially arranged on a pipeline. An outlet of the clamping chamber is connected with a flow meter through a downstream vacuum stop valve, a downstream pressure sensor, a downstream stop valve and a return pressure upstream stop valve which are sequentially arranged on the pipeline; the plurality of piston containers are arranged in the device to store different fluids; the displacement test can be carried out byusing the different fluids by selecting different piston containers, and during the steady-state permeability test and the transient permeability test, the steady-state permeability and the transientpermeability of corresponding rocks can be calculated by only reading parameters detected by corresponding sensors.

Description

technical field [0001] The invention relates to the technical field of rock displacement and permeability tests, in particular to a low-permeability rock displacement, steady-state and transient permeability testing device and method. Background technique [0002] The shale oil and gas revolution in the United States has led to a worldwide upsurge in the development of unconventional oil and gas resources, including shale oil, shale gas, tight oil, tight gas and other energy resources that are difficult to exploit using conventional means. The source rocks that store unconventional oil and gas resources are dense and low-permeable, and oil and gas molecules in these reservoirs are not easy to migrate and accumulate in situ, which brings great difficulties to development. The displacement behavior and permeability characteristics under stress conditions have great influence and significance on site development. [0003] Reservoir wettability has an important impact on the re...

Claims

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Application Information

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IPC IPC(8): G01N15/08
CPCG01N15/0826G01N15/0806
Inventor 胡钦红张涛杨升宇蒙冕模马斌玉乔洪国朱秀川
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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