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A Method for Analyzing Factors Affecting Oil and Gas Field Production Decline

A technology for oil and gas field production and influencing factors, applied in data processing applications, resources, calculations, etc., can solve the problem of not having an effective judgment method, and achieve the effect of eliminating subjectivity, scientific analysis results, and reasonable analysis results.

Inactive Publication Date: 2017-11-28
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among the many influencing factors, there is no effective way to judge which is bigger and which is smaller.

Method used

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  • A Method for Analyzing Factors Affecting Oil and Gas Field Production Decline
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  • A Method for Analyzing Factors Affecting Oil and Gas Field Production Decline

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Embodiment Construction

[0044] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0045] Step 1: Determine the set of influencing factors

[0046] According to the geological conditions of the oil and gas fields and their respective production time conditions, determine the factors that affect the production decline of the oil and gas fields. The set of factors affecting the decline is denoted by X. Assuming that there are m factors affecting the production decline of oil and gas fields, the set of factors to be analyzed can be expressed as:

[0047] X={x 1 ,x 2 ,...,x m}

[0048] Step Two: Determine the Analysis Sequence

[0049] According to each factor in the set of influencing factors, the corresponding historical data is obtained, and one dependent variable factor and multiple independent variable factors are determined. For example, the optional production decline rate is the dependent variable factor, and the independent variab...

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Abstract

A method for analyzing factors affecting production decline in oil and gas fields, comprising the following steps: A. Determining the set of influencing factors; B. Determining the analysis sequence based on historical data; C. Performing non-quantitative processing on the analysis sequence data; D. Using an improved gray correlation analysis method Obtain the correlation degree of the influencing factors and rank them; E. Calculate and rank the weights of each factor by using the combined analytic hierarchy process; F. Comprehensively analyze the sequence of steps D and E to obtain the final sequence of influence degrees and realize the factors affecting the production decline of oil and gas fields comprehensive analysis. This method improves the determination method of the resolution coefficient of the traditional gray relational analysis method, and eliminates the subjectivity brought about by experience selection; uses the combined analytic hierarchy process to determine the importance of influencing factors from a subjective perspective, and combines it with objective results . The synthesis of the calculation results of the subjective and objective methods makes the analysis results more scientific, accurate and reasonable.

Description

technical field [0001] The present invention relates to an analysis method for influencing factors of production decline in oil and gas fields, in particular to a method for objectively analyzing the influencing factors by using an improved gray relational analysis method, and subjectively judging the influencing indicators by using the combined analytic hierarchy process, and finally realizing the influencing factors of oil and gas field production decline Analytical method. Background technique [0002] With the rapid development of my country's economy, oil, as the lifeblood of economic development, is in increasing demand. However, oil is a non-renewable resource. With the deepening of exploitation, the change of underground energy and the increase of water content in oil field, the output of oil and gas field will inevitably decline in the later stage of development. The analysis of oil and gas field production decline rate is an important content in the development dy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06
Inventor 李克文王义龙
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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