Shale gas multi-factor area selection and evaluation method based on fuzzy matrix

A fuzzy matrix and evaluation method technology, applied in the field of shale gas exploration, can solve problems such as shale gas damage, high requirements for preservation conditions, and multiple periods of tectonic activity, so as to reduce human interference factors and speed up the pace of area selection and exploration. Effect

Inactive Publication Date: 2018-01-16
OIL & GAS SURVEY CGS
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Problems solved by technology

[0004] In view of the characteristics of many types of shale in my country, many periods of tectonic activity, many periods of hydrocarbon generation in mud shale, serious damage to shale gas in the later period, and high requirements for preservation conditions,

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  • Shale gas multi-factor area selection and evaluation method based on fuzzy matrix
  • Shale gas multi-factor area selection and evaluation method based on fuzzy matrix
  • Shale gas multi-factor area selection and evaluation method based on fuzzy matrix

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[0026] In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred examples are listed below and described in detail in conjunction with the accompanying drawings.

[0027] figure 1 It is a technical flow chart of a fuzzy matrix-based evaluation method for shale gas prospect area selection in the present invention.

[0028] Step 1. Establish a static geological model of the basin: On the regional seismic section, conduct geometrical characteristics research on the basin-controlling faults, determine the structural style and basin nature of the main basin-controlling faults, and establish the basin's geology through the production of a large number of vertical and horizontal geological sections of the basin. Static geological model. Geometric features mainly include: the nature, grade, distance, strike statistics and rosette diagram compilation of each major basin-controlling fault, fault occurrence, plane-secti...

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Abstract

The invention discloses a shale gas multi-factor area selection and evaluation method based on fuzzy matrix. The method comprises the following steps: step one, studying the geometric features, formation mechanism, and basin properties of basin controlling fracture, and establishing a static geologic model; step two, studying the kinematics features of basin controlling fracture, and analyzing thehistory of structural evolution, burial history of shale, and hydrocarbon generation history of shale; step three, extracting shale static/kinetic evaluation features, defining various parameters ofthe shale gas area selection and evaluation, and assigning the parameters; step four, establishing a fuzzy matrix, and carrying out multi-factor evaluation; and step five, determining the prospectivearea and favorable area based on the results of shale gas area selection and evaluation. The multi-factor area selection and evaluation method has the advantages that various static/kinetic parametersduring the shale gas formation and enrichment process are integrated, a mathematic method based on a fuzzy matrix is used to carry out area selection and evaluation, the artificial interference is reduced maximally, and the method has an important meaning for the shale gas area selection and exploration.

Description

technical field [0001] The invention belongs to the technical field of shale gas exploration, and in particular relates to a multi-factor selection evaluation method for shale gas based on a fuzzy matrix, which is suitable for shale gas prospect areas and favorable areas. Background technique [0002] my country has a vast territory, complex geological structure conditions, and many types and quantities of oil and gas-bearing basins. The complex multi-stage tectonic movement determines that there are many types of organic-rich shale deposits, the geological conditions for the formation of shale gas are complex, and the main controlling factors for enrichment vary widely. [0003] my country's shale gas exploration started late. Although since 2012, as my country has made breakthroughs in shale gas exploration and development in Jiaoshiba and other southern regions, the data has been greatly enriched. There are many phases, multiple hydrocarbon generation phases of mud shale,...

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Application Information

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IPC IPC(8): G01N33/24G01V9/00
Inventor 李文涛包书景宋腾石砥石张子亚郭天旭苑坤林拓于抒放覃英伦张聪王胜建王超陈榕陈相霖
Owner OIL & GAS SURVEY CGS
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