Quantitative evaluation method for availability of proved reserves of coalbed methane
A technology for proven reserves and quantitative evaluation, applied in earthwork drilling, special data processing applications, instruments, etc.
Pending Publication Date: 2019-04-02
SHENGLI COLLEGE CHINA UNIV OF PETROLEUM
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[0005] The purpose of the present invention is to provide a quantitative evaluation method for the availability of proven reserves of coalbed methane that is accurately queued for the availability of coalbed methane blocks and solves the selection problem of coalbed methane block mining
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[0043] In order to make the above-mentioned and other objects, features and advantages of the present invention more comprehensible, the preferred embodiments are listed below and shown in the accompanying drawings, and are described in detail as follows.
[0044] Such as figure 1 as shown, figure 1 It is a flow chart of the method for quantitatively evaluating the availability of proven reserves of coalbed methane according to the present invention.
[0045] In step 101, through the comprehensive evaluation of geological characteristics and development methods, combined with previous research and actual data in the study area, a single factor evaluation table for the availability of proven reserves is formulated (the analysis factors must be determined after a large number of investigations). Create a summary table of evaluation factors, as shown in Table 1.
[0046] Table 1 Summary of Evaluation Factors
[0047]
[0048] In step 102, according to the geological charact...
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The invention provides a quantitative evaluation method for the availability of proved reserves of coalbed methane. The quantitative evaluation method for the availability of the proved reserves of the coalbed methane comprises the steps that 1, key geological factors affecting the availability of the proven reserves are determined; 2, the availability classification standard of the key geologicalfactors is determined; 3, a single-factor evaluation matrix is established; 4, a weight coefficient matrix of the key geological factors is determined; 5, fuzzy mathematical evaluation of the availability key geological factors is conducted; 6, the development mode adopted under one geology evaluation condition is clarified; 7, the development mode is technically and economically evaluated; and 8, the availability of the proved reserves is evaluated. According to the quantitative evaluation method for the availability of the proved reserves of the coalbed methane, the geological conditions are quantitatively evaluated through a fuzzy mathematics method, a mining technology is determined by the geological conditions, the market gas price is synthesized to predict development benefits, andthe purpose of quantitative evaluation is achieved.
Description
technical field [0001] The invention relates to the technical field of oilfield development, in particular to a method for quantitatively evaluating the availability of proven reserves of coalbed methane. Background technique [0002] According to the 2015 national oil and gas resources dynamic evaluation results of the Ministry of Land and Resources, the geological resources of coalbed methane in my country are as high as 36.8×10 8 m 3 , and widely distributed. The availability of coalbed methane resources is a key factor to be considered in the selection evaluation. Availability refers to the extent to which coalbed methane can be recovered in an area under the current economic and technical conditions, which is affected by various factors such as geological conditions, coalbed methane development methods, development techniques, market conditions, and national policies and regulations. Among them, geological conditions, coalbed methane development methods and developme...
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IPC IPC(8): E21B49/00G06F17/50
CPCE21B49/00G06F30/20
Inventor 董大伟杨焦生刘建赵洋王玫珠王晓蕾胡秋媛杨建磊
Owner SHENGLI COLLEGE CHINA UNIV OF PETROLEUM