Method and device of determining greatest offset of exploratory area shot points
A technology of offset and shot point, which is applied in the field of determining the maximum offset of the shot point in the detection area, and can solve the problems of poor accuracy of the maximum offset, huge amount of calculation, and low calculation efficiency
Active Publication Date: 2016-01-20
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology
However, in the prior art, only the maximum offsets of some shot points in the detection area are determined, and the accuracy of the maximum offset of the detection area determined according to the maximum offsets of some shot points in the detection area is poor.
And to use the existing technology to calculate the maximum offset of all shot points in the detection area will lead to a huge amount of calculation, and the calculation efficiency is low
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[0063] 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 creative efforts shall fall within the scope of protection of this application.
[0064] The specific implementation of the embodiment of the present application will be described in detail below with several specific examples.
[0065] The first embodiment of a method for determining the maximum offset of a shot point in a detection area of the present application will be firstly introduced below. figure 1 It is a ...
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The embodiment provides a method and device of determining the greatest offset of exploratory area shot points. The method comprises: selecting the seismic recording to be treated of a plurality of reference shot points according to the characteristic information of the earth's surface and target stratum of an exploratory area; calculating the effective wave speed, self stimulating and self receiving time, first-motion wave speed and intercept time of the reference shot points by utilizing sampling points on the event corresponding to the effective wave and first-motion wave in the seismic recording to be treated; calculating the effective wave speed, self stimulating and self receiving time, first-motion wave speed and intercept time of shot points in the exploratory area respectively according to the effective wave speed, self stimulating and self receiving time, first-motion wave speed and intercept time of the reference shot points; and calculating the greatest offset of the shot points in the exploratory area according to the effective wave speed, self stimulating and self receiving time, first-motion wave speed and intercept time of the shot points in the exploratory area. The technical scheme can rapidly and accurately determine the greatest offset of the shot points in the exploratory area, and provide support for obtaining high quality seismic prospection field collection data.
Description
technical field [0001] The invention relates to the technical field of seismic exploration data processing, in particular to a method and a device for determining the maximum offset of a shot point in an exploration area. Background technique [0002] The quality of seismic data acquisition directly affects the accuracy of data processing in seismic exploration. The design and selection of the observation system is an important factor to improve the quality of seismic data acquisition, and the maximum offset is a very important parameter in the design of the observation system. In construction areas with complex structures and large differences in buried depth in the same layer, the maximum offset directly affects whether deep seismic signals can be received, and has a greater impact on whether geological tasks can be completed. [0003] The refracted wave interference design in the prior art is to select representative shots and select the effective wave and first arrival ...
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Inventor 邹雪峰许银坡潘英杰詹仕凡李伟波樊平
Owner BC P INC CHINA NAT PETROLEUM CORP