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Three-dimensional earthquake observing system quantitative designing method

A 3D seismic and observation system technology, applied in geophysical measurement, seismology, and measurement devices, can solve the problems of qualitative design and poor accuracy of the 3D seismic observation system, reduce acquisition footprints, improve accuracy and scientificity, Effect of reducing prestack migration noise

Active Publication Date: 2014-11-12
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0007] The present invention aims to overcome the problem that the three-dimensional seismic observation system in the prior art can only be qualitatively designed and has poor accuracy, and provides a quantitative design method of the three-dimensional seismic observation system that conforms to the principle of uniform sampling and consistent bin attributes, which is scientific and Quantitative Design of 3D Seismic Observation System

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  • Three-dimensional earthquake observing system quantitative designing method

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Embodiment Construction

[0021] The technical scheme adopted in the present invention is to obtain multiple three-dimensional seismic observation systems by scanning the main parameters of the three-dimensional seismic observation array for the type of three-dimensional seismic observation system of orthogonal and symmetrical blasting, and to deploy them in full coverage in the set evaluation area According to the principles of uniform offset, azimuth sampling within bins and consistent attributes between bins, and determine the evaluation index, according to the evaluation index, the 3D seismic observation system scheme is determined by classification and sorting, and the quantitative design of the 3D seismic observation system scheme is completed. Seismic acquisition design provides a basis, and the block diagram of the method is as follows figure 1 shown, including the following steps:

[0022] 1. Determine the initial 3D seismic observation system A i :

[0023] 1.1. According to the receiving p...

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Abstract

The invention relates to a three-dimensional earthquake observing system quantitative designing method. The technical scheme is that to an orthogonal and symmetrical blasting three-dimensional earthquake observing system type, a plurality of three-dimensional earthquake observing systems can be obtained through a method of scanning main parameters of a three-dimensional earthquake observing layout; the three-dimensional earthquake observing systems are fully distributed in a set evaluating area; quantitative evaluation indexes can be determined according to the consistency principle between surface element inner geophone offset, the azimuth angle sampling evenness and the attributes between surface elements; a three-dimensional earthquake observing system scheme can be determined according to the quantitative evaluating indexes and through classification orders; the quantitative design of the three-dimensional earthquake observing systems can be finished. Thus, the designing accuracy and the designing scientificity of the observing systems are improved, the earthquake imaging accuracy is improved, and basis is provided for earthquake collection design.

Description

Technical field: [0001] The invention relates to a quantitative design method for a three-dimensional seismic observation system, belonging to the technical field of seismic exploration acquisition design. Background technique: [0002] In the current 3D seismic exploration acquisition design, the design of the observation system is generally to design 2 to 3 observation system schemes based on experience based on the demonstration of basic parameters, and then evaluate and select the final observation system scheme by using maps such as coverage times and offset distribution. , its accuracy is poor, and it is difficult to meet the requirements of actual working conditions. [0003] In addition, the design of 3D seismic observation system still follows the design idea of ​​post-stack migration processing era, and pre-stack migration puts forward higher requirements for seismic observation system than post-stack migration. With the popularization and application of prestack ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/00G01V1/20
Inventor 秦广胜蔡其新郝加良肖斌常正时邵冬梅张红霖汪露露
Owner CHINA PETROLEUM & CHEM CORP
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