Method and apparatus for conducting statics to transition area
A transition area and static correction technology, applied in the field of geophysical exploration, can solve problems such as inability to accurately image, difficult to solve near-surface model problems, etc., to achieve the effect of improving imaging accuracy
Active Publication Date: 2016-04-06
BC P INC CHINA NAT PETROLEUM CORP +1
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[0003] However, for exploration areas with complex surface conditions and various geological structures, the above-mentioned first-arrival static correction methods are difficult to solve all near-surface model problems, especially in transitional areas where multiple geological structures are adjacent. None of the solstice correction methods can accurately image
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[0023] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the scope of protection of this application.
[0024] The inventor considers that current seismic exploration has gradually advanced into complex exploration areas, and the surface conditions are generally more complex, covering various geological structures, which makes it difficult to solve all near-surface model problems with a single first-arrival modeling method, especially...
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The invention discloses a method and apparatus for conducting statics to a transition area, and the method comprises the steps of determining a transition area of a chromatography modeling and a refracted wave modeling in the area to be measured according to a result of the chromatography modeling and the refracted wave modeling in the area to be measured; determining an unconsolidated sediment thickness and a surface layer average speed of the transition area; and determining a statics of the transition area according to the determined unconsolidated sediment thickness and the surface layer average speed. The method and apparatus for conducting statics to the transition area can be used to determine the statics corresponding to the transition area accurately, therefore, the area to be measured can be imaged accurately.
Description
technical field [0001] The present application relates to a geophysical prospecting method, in particular to a method and device for performing static correction on a transition area. Background technique [0002] In geophysical exploration, first arrival static correction method is the main method to solve the problem of static correction in complex areas. At present, there are mainly methods for first arrival static correction: refraction static correction method and tomographic static correction method. Among them, the refraction wave static correction method is suitable for areas with known surface velocity or thickness and a stable refraction layer, especially in mountain areas with obvious stratification, especially in mountain areas where old strata are exposed; tomographic static correction The method is not limited by surface conditions, and is suitable for near-surface model inversion in various complex surface areas, especially in the Gobi gravel area with extrem...
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IPC IPC(8): G01V1/36
CPCG01V1/36
Inventor 吕景峰王乃建陈学强刘衍贵王彦峰李振华苏欢欢
Owner BC P INC CHINA NAT PETROLEUM CORP