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Method for reservoir quantitative interpretation with rock physics template

A petrophysical and quantitative interpretation technology, applied in geophysical measurement, measurement equipment, seismic signal processing, etc., can solve the problems of seismic data risk, limit the application and interpretation of seismic inversion results, and achieve the effect of reducing multi-solution

Active Publication Date: 2017-04-05
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

At present, the interpretation of these elastic parameters and their transformations is carried out at a qualitative level. A single application of one parameter to predict reservoirs has multiple solutions, which brings risks to the interpretation of seismic data and limits the seismic response. Application and interpretation of performance results

Method used

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  • Method for reservoir quantitative interpretation with rock physics template
  • Method for reservoir quantitative interpretation with rock physics template
  • Method for reservoir quantitative interpretation with rock physics template

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Embodiment 1

[0061] This embodiment is an implementation example of the present invention for actual logging data and pre-stack inversion data in a certain area, and the method steps of the present invention are as follows:

[0062] 1. First, test and analyze tight sandstone reservoir rock samples to obtain the input data of the petrophysical forward modeling model. Including elastic modulus, density and pore flatness of sandstone and mudstone.

[0063] 2. For tight sandstone, use dry rock approximation and Gassmann formula to establish a petrophysical model of tight sandstone, and calculate the transformation curve of velocity and density with rock porosity, water saturation and shale content, and realize petrophysical forward modeling calculation.

[0064]3. On the basis of step 2, ① first set the shale content to a constant value, and given the water saturation, the velocity and density variation curves with porosity can be calculated. The variation curves of velocity and density with ...

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Abstract

The invention provides a method for reservoir quantitative interpretation with a rock physics template. The method comprises rock sample test analysis, calculation of an initial model of the rock physics template, optimization of the initial model of the rock physics template, interpretation of a prestack seismic inversion result with the optimized initial model of the rock physics template, and obtainment of oil and gas-bearing windows. The method can be used for logging data interpretation and interpretation of the prestack seismic inversion result. The method for establishing the rock physics template can rapidly establish the rock physics template used for logging and seismic interpretation, analyze the oil-gas possibility by distribution of data on the rock physics template, and reduce multiplicity of seismic data interpretation.

Description

technical field [0001] The invention relates to the technical fields of rock physics and geophysical well logging, in particular to a method for quantitatively interpreting reservoirs by using rock physics templates. Background technique [0002] Rock physics is a bridge connecting rock physical parameters, fluid property parameters and seismic elastic parameters, which provides a solid foundation for the quantitative interpretation of seismic data and greatly reduces the ambiguity of seismic interpretation. In recent years, significant progress has been made in the basic research of seismic rock physics at home and abroad. At the same time, the research results have been successfully applied to lithology identification, fluid detection, and porosity inversion. In seismic exploration, reservoir development, etc. field played an important role. [0003] With the continuous deepening of oil and gas exploration and development, oil and gas reservoirs are becoming more and more...

Claims

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Application Information

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IPC IPC(8): G01V1/30
CPCG01V1/306G01V2210/624G01V2210/6244
Inventor 白俊雨
Owner CHINA PETROLEUM & CHEM CORP
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