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Multi-physical model logging shear wave velocity curve reconstruction method and system and electronic equipment

A technology of shear wave velocity and rock physics model, which is used in seismology and seismic signal processing for logging records, can solve problems such as errors in the results of shear wave velocity curves, and achieve the effect of avoiding errors.

Pending Publication Date: 2022-04-05
华能煤炭技术研究有限公司 +2
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Problems solved by technology

[0007] The present invention solves the problem that the shear wave velocity curve result error of the existing shear wave velocity reconstruction method is relatively large

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  • Multi-physical model logging shear wave velocity curve reconstruction method and system and electronic equipment
  • Multi-physical model logging shear wave velocity curve reconstruction method and system and electronic equipment
  • Multi-physical model logging shear wave velocity curve reconstruction method and system and electronic equipment

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[0038] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0039] figure 1 It is a schematic flow chart of a multi-physics model logging shear wave velocity curve reconstruction method provided by an embodiment of the present invention. The method is applied to coalfield geophysical logging, and the method includes the following steps:

[0040] S102. Obtain well logging data and lithology and physical property parameters of the target formation.

[0041]Among them, the logging data includes: natural gamma ray logging data, spontaneous potential logging data, resistivity logging data, and density logging data.

[0042] Optionally, the logging dat...

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Abstract

The invention provides a multi-physical model logging shear wave velocity curve reconstruction method and system and electronic equipment. The method comprises the following steps: acquiring logging data and lithologic physical property parameters of a target stratum; calculating the shale content, the stratum density and the stratum porosity of the target stratum according to the logging data; according to the shale content, the stratum density and the lithologic physical property parameters, the rock stratum matrix modulus of the target stratum is calculated through a preset rock physical model; substituting the formation porosity and the rock stratum matrix modulus into the Chapman model to obtain the rock stratum equivalent modulus of the target formation; according to the rock stratum equivalent modulus and the preset relational expression between the rock stratum equivalent modulus and the stratum longitudinal and transverse wave velocities, the shear wave velocity curve of the target stratum is constructed. According to the method, the logging shear wave velocity curve can be calculated more accurately, and large errors of the shear wave velocity curve result caused by limitation of experimental conditions are avoided.

Description

technical field [0001] The invention relates to the technical field of geophysical interpretation, in particular to a multi-physics model logging shear wave velocity curve reconstruction method, system and electronic equipment. Background technique [0002] The shear wave velocity curve is very important in geophysical interpretation, but due to the cost of detection, shear wave logging curve detection is rarely performed during coalfield drilling. Shear-wave velocity reconstruction refers to obtaining shear-wave velocity data through numerical calculation based on existing geological and logging data. The commonly used shear wave velocity reconstruction methods mainly include three categories: high and low frequency separation method, empirical formula estimation method and petrophysical model calculation method. [0003] The high and low frequency separation method is mainly used for pseudophonic waves, which are composed of low frequency parts and high frequency parts. ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/48
Inventor 李伟东彭苏萍殷裁云邹冠贵柳宝平莫仕林王海军顾雷雨赵清全付康国曹运飞李金鑫
Owner 华能煤炭技术研究有限公司
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