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Reservoir permeability determination method and system, equipment and readable storage medium

A technology to determine the method and permeability, which is applied in complex mathematical operations, instruments, data processing applications, etc., can solve problems such as inability to accurately calculate reservoir permeability, reduce safety risks and test costs, reduce uncertainty, shorten The effect of test time

Pending Publication Date: 2022-02-18
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Reservoir permeability cannot be accurately calculated since no horizontal line segment occurs

Method used

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  • Reservoir permeability determination method and system, equipment and readable storage medium
  • Reservoir permeability determination method and system, equipment and readable storage medium
  • Reservoir permeability determination method and system, equipment and readable storage medium

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Embodiment Construction

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. The described embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0039] The principle and spirit of the present application will be explained in detail below with reference to several representative implementations of the present application.

[0040] Although the present application provides method operation steps or device structures as shown in the following embodiments or accompanying drawings, more or less operation steps or module units may be included in the method or device based on conventional or creative work . In the step...

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Abstract

The invention discloses a reservoir permeability determination method and system, equipment and a readable storage medium. The method comprises the steps: acquiring formation pressure data of gas reservoir well testing at different time points; determining a pressure logarithmic curve and a pressure derivative logarithmic curve according to the formation pressure data; determining an intersection point according to the pressure logarithmic curve and the pressure derivative logarithmic curve; and calculating the gas reservoir well test reservoir permeability according to the intersection point ordinate value. The safety risk and the testing cost of long-time testing are reduced, and the reservoir permeability is simply, conveniently and accurately calculated.

Description

technical field [0001] The present application relates to the technical field of oil and gas exploitation and analysis, in particular to a method, system, equipment and readable storage medium for determining reservoir permeability. Background technique [0002] This section is intended to provide a background or context to the embodiments of the application that are recited in the claims. The descriptions herein are not admitted to be prior art by inclusion in this section. [0003] At present, well testing method is an effective method to determine reservoir permeability. This method needs to shut down the well to test the variation of wellbore pressure with time, then draw the double-logarithmic curve of pressure and pressure derivative with respect to time, and calculate the reservoir permeability according to the position of the horizontal line of the pressure derivative curve. However, for ultra-high pressure and fractured tight sandstone gas reservoirs, the burial d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/10G06Q50/02
CPCG06F17/10G06Q50/02
Inventor 孙贺东崔永平王洪峰曹雯朱松柏常宝华邵剑波付小涛
Owner PETROCHINA CO LTD
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