Method and device for predicting oil-gas possibility based on correlation of multiple geophysical parameters

A technology of geophysical parameters and prediction methods, applied in geophysical measurement, measurement devices, seismic signal processing, etc., can solve the problem of low certainty and achieve the effect of accurate oil and gas

Active Publication Date: 2019-12-31
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method and device for oil and gas prediction based on the correlation of multiple geophysical parameters, which is used to solve the problem of low certainty in existing oil and gas prediction methods

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  • Method and device for predicting oil-gas possibility based on correlation of multiple geophysical parameters
  • Method and device for predicting oil-gas possibility based on correlation of multiple geophysical parameters
  • Method and device for predicting oil-gas possibility based on correlation of multiple geophysical parameters

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Embodiment Construction

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

[0045] The oil and gas prediction method based on the correlation of multiple geophysical parameters in the present invention comprises the following steps:

[0046] Determine the geophysical parameters sensitive to the oil-bearing section in the formation target interval, such as gamma, spontaneous potential, acoustic wave, resistivity, density and neutron porosity, and obtain the log curve values ​​and oil-gas factors of each geophysical parameter. Taking the reciprocal of the oil-bearing factor, the oil-bearing standard value of geophysical parameters is obtained. In order to facilitate the comparison of the sensitivity of various geophysical parameters to oil and gas, the sensitivity correction is performed on the log curve values ​​of each geophysical parameter, that is, the sensitivity correction is performed on the log curve values ​​...

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Abstract

The invention relates to a method and device for predicting oil-gas possibility based on correlation of multiple geophysical parameters. A constructed first matrix representing an oil and gas-containing factor and a second matrix representing a log curve value are multiplied, and the (M*N+1) dimensional geophysical space is transformed into the (M*M+1) dimensional space under the product of the first matrix, that is, the M*N-dimensional geophysical attribute space and one-dimensional depth space are transformed into the M*M dimensional space and one-dimensional depth space, wherein the resultmatrix obtained after the multiplication operation comprises M*M element blocks, and the data values in each element block vary with the depth of the stratum. The oil-gas possibility of the target interval can be accurately predicted according to the change of the data value.

Description

technical field [0001] The invention belongs to the technical fields of oil and gas field analysis, reservoir prediction and the like, and in particular relates to a method and device for oil and gas prediction based on the correlation of multiple geophysical parameters. Background technique [0002] It is difficult to predict the oil and gas-bearing properties of tight, low-permeability, low-pressure, and low-abundance oil and gas. Conventional geophysical interpretation and prediction methods have many solutions and are not certain enough. For example, the Chinese patent with the authorized announcement number CN104656142B discloses "a method for calibrating seismic horizons by combining vertical seismic profiles and logging", which is a seismic horizon calibrating method using vertical Shiye seismic profiles and logging. And based on the zero-well-source-spacing data to obtain the time-depth relationship of the longitudinal wave and the corridor superimposed profile, log ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/30
CPCG01V1/301
Inventor 马百征王保战乔中林高辉黎小伟陈春艳马运利李宇翔
Owner CHINA PETROLEUM & CHEM CORP
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