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Method and device for determining bottom hole pressure of gas well and storage medium

A bottom hole pressure and gas well technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of low bottom hole pressure accuracy and deviation in gas well production analysis, and achieve accurate support and easy calculation. , the effect of reducing the amount of operation

Active Publication Date: 2019-08-02
PETROCHINA CO LTD
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Problems solved by technology

[0005] In order to solve the problem of low accuracy of the gas well bottomhole pressure in the related art, which causes deviations in the analysis of the actual production situation of the gas well, the embodiment of the present invention provides a method, device and storage medium for determining the gas well bottomhole pressure

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  • Method and device for determining bottom hole pressure of gas well and storage medium
  • Method and device for determining bottom hole pressure of gas well and storage medium
  • Method and device for determining bottom hole pressure of gas well and storage medium

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Embodiment Construction

[0057] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0058] figure 1 It is a flow chart of a method for determining the bottom hole pressure of a gas well provided by an embodiment of the present invention. see figure 1 , the method includes the following steps.

[0059] Step 101: Determine the seepage area at the bottom of the gas well and a plurality of unit grids included in the seepage area.

[0060] Step 102: Determine the seepage linear differential equation and linear constraint conditions of the seepage region.

[0061] Step 103: Determine the discrete numerical model of each unit grid in the plurality of unit grids. The discrete numerical model is determined when wellbore storage effect and skin effect are considered.

[0062] Step 104: Based on the discrete numerical model of...

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Abstract

The invention discloses a method and device for determining bottom hole pressure of a gas well and a storage medium in the technical field of gas reservoir exploitation. The method comprises the stepsof determining a seepage area of the bottom of a gas well and a plurality of unit grids included in the seepage area and a seepage linear differential equation and a linear constraint condition of the seepage area; determining a discrete numerical model of each unit grid in the plurality of unit grids so as to determine the bottom hole pressure of the gas well based on the discrete numerical model of each unit grid and the seepage linear differential equation and linear constraint condition of the seepage area. The seepage area is dispersed into a plurality of unit grids, and the discrete numerical model of each unit grid is determined under the condition that the wellbore reservoir effect and the epidermis effect are considered. The bottom hole pressure of the gas well is determined based on the discrete numerical model of each unit grid and the seepage linear differential equation and the linear constraint condition of the seepage area, so that accuracy of the bottom hole pressure is improved.

Description

technical field [0001] The invention relates to the technical field of gas reservoir exploitation, in particular to a method, device and storage medium for determining the bottom hole pressure of a gas well. Background technique [0002] In the process of exploiting gas reservoirs through gas wells, when the actual production conditions of the gas wells are different, the exploitation efficiency of the gas wells for the gas reservoirs is also different. Therefore, in order to improve the production efficiency of the gas well to the gas reservoir, the actual production situation of the gas well can be determined in advance, so that the operator can take corresponding measures according to different actual production situations to improve the production efficiency of the gas well to the gas reservoir. The actual production of the gas well mainly depends on the flow law of the gas in the seepage area at the bottom of the gas well, and the flow law of the gas in the seepage area...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/23
Inventor ZHANG DELIANGMA XINHUAPENG XIANWU JIANFASHI XUEWENZHANG JIANTAO ZHENGWUXIE WEIYANGLIU JUNWU TIANPENG
Owner PETROCHINA CO LTD
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