Tight sandstone porosity and permeability prediction method based on reservoir quality main control factor analysis

A technology of reservoir quality and main control factors, applied in the direction of permeability/surface area analysis, suspension and porous material analysis, measurement devices, etc. control factors etc.

Inactive Publication Date: 2017-06-13
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY +2
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Problems solved by technology

[0010] There have been a lot of research on the above problems, trying to clarify the influencing factors and predict the porosity and permeability of deep reservoir rocks; however, most of the research results on reservoir quality control factors are limited to the qualitative analysis and analysis of the factors affecting reservoir quality development. Description, although very few scholars can quantitatively evaluate the factors affecting reservoir development, there are few evaluation fa

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  • Tight sandstone porosity and permeability prediction method based on reservoir quality main control factor analysis
  • Tight sandstone porosity and permeability prediction method based on reservoir quality main control factor analysis
  • Tight sandstone porosity and permeability prediction method based on reservoir quality main control factor analysis

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[0107] The technical solution of this patent will be further described in detail below in conjunction with specific embodiments.

[0108] see Figure 1-26 , a tight sandstone porosity and permeability prediction method based on the analysis of the main controlling factors of reservoir quality; in order to meet the requirements of the research, samples were taken from the He 8 member sandstone reservoir in 40 typical representative wells in the study area, including cores, cuttings, A total of 1,200 plunger samples were taken at a sampling depth of 2,769m to 3,120m; 1,052 samples were vacuum-saturated with blue or red epoxy resin, and cast thin sections were ground for analysis of rock mineralogy, diagenetic characteristics, pore characteristics, and cement; some The thin sections were stained with alizarin red and potassium ferricyanide to identify carbonate cements; 300-point counting method was used to quantitatively count the parameters such as particles, cements, matrixes,...

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Abstract

The invention discloses a tight sandstone porosity and permeability prediction method based on reservoir quality main control factor analysis. The method comprises the following steps: 1) performing quantitative diagenesis evaluation; 2) selecting diagenesis factor reflection; 3) selecting multivariate linear stepwise regression as a data analysis method, and realizing porosity and permeability prediction through reservoir quality development main control factor analysis; and 4) performing regression analysis on the porosity and permeability according to a regression analysis method. According to the prediction method disclosed by the invention, the reservoir quality influencing factors of 8 sections of sandstone in the east region of the Sulige gas field are clear, a reservoir quality prediction model is established, and the prediction effect is excellent; and moreover, a novel thought and method can be provided for tight sandstone reservoir quality quantitative prediction in other regions.

Description

technical field [0001] The invention relates to the technical field of geological rock survey, in particular to a method for predicting the porosity and permeability of tight sandstone based on the analysis of main controlling factors of reservoir quality. Background technique [0002] With the increasing demand for oil and gas resources around the world, and the depletion of conventional oil and gas resources, unconventional oil and gas resources have gradually become the focus of geologists in the context of the deepening contradiction between energy supply and demand. Tight sandstone gas has become a new exploration target because of its large resource potential and good development prospects. [0003] The Sulige gas field in the Ordos Basin is one of the largest gas fields discovered in China so far. The main production layers are the Shan 1 and Shan 2 members of the Shanxi Formation and the He 8 member of the Shihezi Formation in the Permian. The sandstone has low poros...

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Application Information

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IPC IPC(8): G01N15/08
CPCG01N15/08
Inventor 王猛唐洪明刘枢张烈辉赵峰卢浩
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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