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公开时间: 2008-12-03      申请时间: 2007-05-29
申请人: CHINA NAT PETROLEUM CORP

CN101315427A
patent for invention


标题(英语)

Method and system for processing seismic exploration data of complex area


摘要(英语)

The invention relates to an integrated processing method and a system thereof for static correction and pre-stack migration imaging of seismic exploration data during oil and gas exploration in complex areas and complex oil gas reservoirs. The method comprises the following steps: pre-stack time migration on earth surface; calculation of accurate time formula of the pre-stack time migration from green function; multiple migration velocity scanning for obtaining accurate migration velocity model; residual static correction through CRP gather for improving the signal-to-noise ratio and accurately imaging; and wave field continuation for solving the problem of complex earth surfaces. The dominant frequency is improved by 5-10 Hz approximately when the method and the system are used for structure imaging of earthquake data in complex mountainous areas and complex structure areas; the signal-to-noise ratio is also greatly improved; by utilizing the integrated data processing system for static correction and pre-stack time migration to process data, the common reflection point (CRP) gather can be more accurate, and lithological inversion and AVO techniques can be more reliable; a novel theory that a primary trace has approximately 180,000,000 residual static correction amount is first proposed at home and abroad, and is proved theoretically and practically.


申请人详细信息

序号 名称 数据格式
1 CHINA NAT PETROLEUM CORP docdb

发明人详细信息

序号 名称 数据格式
1 SHANGXU WANG docdb
2 CHUANWEN SUN docdb

法律状态

序号 日期 法律代码 详细信息
1 20081203 C06 PUBLICATION
2 20090128 C10 ENTRY INTO SUBSTANTIVE EXAMINATION
3 20110914 C12 REJECTION OF A PATENT APPLICATION AFTER ITS PUBLICATION

文档历史

公开时间: 2008-12-03
CN101315427A
申请时间: 2007-05-29
CN200710099696

CPC分类


IPC分类

G01V1/20

专利家族

40106499

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