A shale gas well production fitting and prediction method

A shale gas well and prediction method technology, which is applied in the direction of prediction, data processing application, complex mathematical operations, etc., can solve the problems of shale gas well production prediction error, cumbersome process, etc., and achieve strong scalability and good fitting effect Effect

Active Publication Date: 2020-09-15
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology

[0005] The purpose of the present invention is: in order to solve the problems of large production prediction error and cumbersome process of shale gas wells, the present invention combines the productivity equation and material balance equation of the fracture system and the matrix system, and has two kinds of constant production and constant pressure for shale gas wells. The production model is used for production history fitting and production forecasting, the fitting effect is good, and the scalability is strong

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  • A shale gas well production fitting and prediction method
  • A shale gas well production fitting and prediction method
  • A shale gas well production fitting and prediction method

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with the embodiments and the accompanying drawings.

[0039] The invention provides a shale gas well production fitting and prediction method, figure 1 As the technical roadmap of this method, the method includes the following steps:

[0040] First, prepare shale gas well production data and static parameters, including gas production rate, water production rate, original pressure and current pressure of fracture system, original pressure and current pressure of matrix system, deviation coefficient under original conditions and deviation coefficient under current pressure ;

[0041] Then, the shale gas reservoir is divided into fracture system and matrix system, and the productivity equation and material balance equation of the fracture system and matrix system are combined, and the production history of shale gas wells with constant production and constant pressure is matched;

[0042] Finally, afte...

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Abstract

The invention relates to a shale gas well production fitting and prediction method, which belongs to the field of shale gas well productivity evaluation; it solves the problems of large shale gas well production prediction error and cumbersome process; its technical scheme is: Layers are divided into fracture system and matrix system, and the productivity equation and material balance equation of the simultaneous fracture system and matrix system are used to match the production history of the bottom hole flow pressure and water production for the two production modes of shale gas wells, namely constant production and constant pressure. After the fitting is successful, the gas production and water production of shale gas wells under two production modes of constant production and constant pressure are respectively predicted. The invention has good fitting effect, high prediction accuracy and strong generalizability.

Description

technical field [0001] The invention relates to a shale gas well production fitting and prediction method, which belongs to the field of productivity evaluation of shale gas wells. Background technique [0002] Under the current situation where the contradiction between international energy supply and demand is becoming increasingly prominent, the effective exploitation of new energy is of great significance to the national strategic deployment. As a new unconventional energy, shale gas, especially after the successful development of North American countries, has attracted a lot of attention from all over the world. s concern. With the continuous development of domestic shale gas reservoirs and the deepening of field experience and theoretical research, it is becoming more and more important to clarify the productivity of shale gas wells and predict the production of shale gas wells. [0003] After extensive research, the patent No. CN201811482058.9 "Shale Gas Well Producti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/11G06Q10/04G06Q50/02
CPCG06F17/11G06Q10/04G06Q50/02
Inventor 谭晓华毛正林李晓平刘承佚崔苗逢彭港珍丁磊邓永建
Owner SOUTHWEST PETROLEUM UNIV
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