Method and system for determining temperature distribution of high-pressure gas well shaft

Abstract

The invention provides a method and system for determining temperature distribution of a high-pressure gas well shaft. The method includes the steps that data information related to a high-pressure gas well and a shaft is acquired; the preset step length is acquired; the shaft is divided into multiple shaft sections according to the step length; the temperatures of the upper ends of all the shaft sections are determined according to the data information; shaft temperature field distribution is formed through the temperatures of the upper ends of all the shaft sections. The data information related to the high-pressure gas well and the shaft is acquired, the shaft is divided into the shaft sections according to the set step length, the temperatures of the upper ends of all the shaft sections are determined sequentially, shaft temperature field distribution is acquired, and a data basis is provided for follow-up single-phase flow or gas-liquid two-phase flow extraction of a high-pressure gas producing well, a gas storage well and the like according to the shaft temperature field distribution.

Description

Technical field [0001] The present invention relates to the field of natural gas production technology, particularly to the production technology of single-phase flow or gas-liquid two-phase flow such as high-pressure gas production wells, gas storage wells, etc., and specifically is a method and system for determining wellbore temperature distribution of high-pressure gas wells. Background technique [0002] In the prior art, many researchers have done a lot of research on various aspects of the heat transfer mechanism between the wellbore fluid and the surrounding rock, and have given an equation for calculating the wellbore temperature distribution. Lesem et al. and Moss and White first suggested the procedures and steps for determining the wellbore fluid temperature. Ramey and Edwardson et al. first gave a theoretical model for determining the fluid temperature as a function of well depth and production time, but both of these studies ignored kinetic energy. The influence of ...

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Problems solved by technology

[0007] In order to solve the problem that various research results in the prior art have relatively large errors in the process of calculating the wellbore temperature distribution of high-pressure gas production wells, the present invention provides a method and system for determining the wellbore temperature distribution of high-pressure gas wells. An accurate solution to determine the wellbore temperature distribution of high-pressure gas wells. By obtaining data related to high-pressure gas wells and wellbores, the wellbore is divided into multiple wellbore sections according to the set step size, and the temperature at the middle and upper ends of each wellbore section is sequentially determined. Then the wellbore temperature field distribution is obtained, which provides a data basis for the subsequent exploitation of single-phase flow or gas-liquid two-phase flow in high-pressure gas production wells and gas storage wells.

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