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Quantitative evaluation method of shale oil and gas enrichment index on the basis of multi-factor nonlinear regression

A nonlinear regression and enrichment index technology, which is applied in the fields of electrical digital data processing, special data processing applications, instruments, etc. Application effect and promotion prospect effect

Active Publication Date: 2015-07-01
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

However, in these methods, the quantitative evaluation standards of each influencing parameter need to be defined manually, and the weight assignment of different parameters is relatively random, which is greatly affected by human factors, and is still a semi-quantitative analysis.

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  • Quantitative evaluation method of shale oil and gas enrichment index on the basis of multi-factor nonlinear regression
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  • Quantitative evaluation method of shale oil and gas enrichment index on the basis of multi-factor nonlinear regression

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Embodiment 1

[0036] Such as figure 1 as shown, figure 1 It is a flowchart of the quantitative evaluation method for shale oil and gas enrichment index based on multi-factor nonlinear regression of the present invention.

[0037] In step 101, multiple reservoir information is integrated to construct a quantitative evaluation index for shale reservoirs—the oil and gas enrichment index. According to the existing drilling results, the shale reservoirs are divided into enrichment and non-enrichment types, and correspondingly extract various reservoir information to establish a typical sample set. Among them, various reservoir information can be the porosity and permeability data measured by the core, the fracture density, fracture length and other parameters directly measured by imaging logging, or various conventional logging data. According to various reservoir information provided by typical samples, the regularity of classification is summarized, and the multivariate linear discriminant f...

Embodiment 2

[0046] Such as figure 1 as shown, figure 1 It is a flowchart of the quantitative evaluation method for shale oil and gas enrichment index based on multi-factor nonlinear regression of the present invention.

[0047] In step 101, multiple reservoir information is integrated to construct a quantitative evaluation index for shale reservoirs—the oil and gas enrichment index. According to the existing drilling results, the shale reservoirs are divided into enrichment and non-enrichment types, and correspondingly extract various reservoir information to establish a typical sample set. Among them, various reservoir information can be the porosity and permeability data measured by the core, the fracture density, fracture length and other parameters directly measured by imaging logging, or various conventional logging data. According to various reservoir information provided by typical samples, the regularity of classification is summarized, and the multivariate linear discriminant f...

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Abstract

The invention provides a quantitative evaluation method of a shale oil and gas enrichment index on the basis of multi-factor nonlinear regression. The method comprises the following steps: constructing a quantitative evaluation index of a shale oil deposit, and carrying out the quantitative analysis of a one-dimensional geological factor; and synthesizing multi-dimensional geological factors to establish a nonlinear regression formula, and carrying out the quantitative evaluation of a shale oil deposit enrichment region. The quantitative evaluation method of the shale oil and gas enrichment index on the basis of the multi-factor nonlinear regression combines various geological factors which affect shale oil deposit development, establishes a nonlinear shale oil deposit representation formula based on multi-dimensional geological parameters, improves a quantitative level of the geological factors on representing the shale oil deposit, and can provide an important reference basis for the evaluation of the shale oil deposit enrichment region in a high-mature exploration area.

Description

technical field [0001] The invention relates to the field of unconventional oil and gas geological exploration data processing methods, in particular to a quantitative evaluation method for shale oil and gas enrichment index based on multi-factor nonlinear regression. Background technique [0002] A large number of exploration practices have shown that the key to shale reservoir exploration is to find relatively enriched areas of oil and gas. The traditional source rock evaluation method based on geochemical analysis indicators is mainly applicable to the oil and gas prospect analysis in the initial stage of exploration. However, for highly mature exploration areas, this method has few sampling points, low accuracy, time-consuming and laborious, and cannot characterize the heterogeneity of shale reservoirs in spatial distribution in detail. Quantitative evaluation of shale reservoir enrichment areas No longer applicable. Therefore, it is necessary to study and establish a ...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 张营革宋亮张云银谭明友王楠牟敏魏欣伟张鹏关昌田胡贤根
Owner CHINA PETROLEUM & CHEM CORP
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