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Method for researching sulfur deposition pore network model of high-sulfur-content gas reservoir

A pore network model and network model technology, applied in CAD numerical modeling, complex mathematical operations, instruments, etc., can solve problems that remain in theoretical research, and achieve strong scalability and good simulation effects

Active Publication Date: 2021-02-05
王立佳
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Problems solved by technology

[0005] Generally speaking, there are many studies on sulfur deposition in high-sulfur gas reservoirs, but they are still at the stage of theoretical research and physical experiment simulation, and there are no reports on numerical simulation of sulfur deposition in high-sulfur gas reservoirs using pore network models

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  • Method for researching sulfur deposition pore network model of high-sulfur-content gas reservoir
  • Method for researching sulfur deposition pore network model of high-sulfur-content gas reservoir
  • Method for researching sulfur deposition pore network model of high-sulfur-content gas reservoir

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with the embodiments and the accompanying drawings.

[0037] The invention provides a method for researching the pore network model of sulfur deposition in high-sulfur gas reservoirs, figure 1 As the technical roadmap of this method, the method includes the following steps:

[0038] S100. Prepare input parameters of the pore network model, including pore throat structure parameters, viscosity of sulfur, and molar mass of sulfur;

[0039] S200, using a random function to randomly assign tube bundle radii to establish a heterogeneous random pore network model;

[0040] S300, using the percolation theory to control the connectivity, coordination number and pore structure size of the random pore network model through the connectivity probability;

[0041] S400. Establish and solve the pressure matrix equation by using the principle of hydropower similarity, obtain the pressure distribution of the pore ne...

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Abstract

The invention relates to a method for researching a sulfur deposition pore network model of a high-sulfur-content gas reservoir, and belongs to the technical field of high-sulfur-content gas reservoirdevelopment. The problem that a high-sulfur-content gas reservoir sulfur deposition numerical simulation method is lacked at present is solved. According to the technical scheme, based on pore throatstructure parameters and basic properties of sulfur, the pore throat structure parameters and the basic properties of sulfur serve as input conditions of a pore network model, and a random function is adopted for randomly distributing the tube bundle radius to achieve a heterogeneous random network model; a percolation theory is utilized to control connectivity, coordination number and pore structure size of a network model through connectivity probability so as to study sulfur seepage and deposition rules, a pressure matrix equation is established and solved by adopting a hydroelectric similarity principle, pressure field distribution of the pore network model is obtained, and finally the pore network model is established, and the seepage and deposition rules of the sulfur in the high-sulfur-content gas reservoir is researched. The pore network model is innovatively used for simulating sulfur deposition of the high-sulfur-content gas reservoir, the simulation effect is good, and thegeneralizability is high.

Description

technical field [0001] The invention relates to a research method for a pore network model of sulfur deposition in a high-sulfur gas reservoir, belonging to the technical field of high-sulfur gas reservoir development. Background technique [0002] The proven reserves of high-sulfur natural gas in the Sichuan Basin exceed 9000×10 8 m 3 , accounting for more than 90% of the same kind of natural gas reserves in the country. As the main battlefield for the development of high-sulfur natural gas in China, the Sichuan Basin has a history of nearly 47 years of development of high-sulfur gas reservoirs, and has accumulated rich development results and technical experience. At the same time, "going out" to support overseas natural gas cooperative development represents It is the highest level of high-sulfur gas reservoir development in my country and leads the technical development direction of high-sulfur gas reservoir development in China. [0003] At present, in the development...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/28G06F17/16G06F111/10G06F113/08G06F119/14
CPCG06F17/16G06F30/28G06F2111/10G06F2113/08G06F2119/14
Inventor 王立佳鲁丁姜舒怀蔡文刚马海生雷鸣
Owner 王立佳
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