Seismic wave field energy balancing method and processing device

A technology of energy balance and seismic wave field, applied in the direction of seismic signal processing, etc., can solve the problems that the relative relationship of seismic wave field cannot be realized, and the relative strength relationship of destroyed wave field, etc.

Active Publication Date: 2014-02-19
PETROCHINA CO LTD
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Problems solved by technology

The actual seismic record data itself has a relative wave field relationship. When the above-mentioned spherical diffusion compensation and automatic gain control are used for energy balance, the spherical diffusion compensation destroys the relative strength of the wave fi

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  • Seismic wave field energy balancing method and processing device
  • Seismic wave field energy balancing method and processing device
  • Seismic wave field energy balancing method and processing device

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[0052] 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 protection scope of the present invention.

[0053] Seismic records under ideal conditions, such as those obtained by computer simulation or physical simulation, are all energy-balanced, because the simulation considers that the receiving factors are the same and the excitation factors are the same. The energy imbalance of actual seismic data is due to the difference between recei...

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Abstract

The invention provides a seismic wave field energy balancing method. The seismic wave field energy balancing method includes the steps that firstly, a processing device reads seismic data processed in advance; secondly, the processing device carries out single-blasting energy balancing on the input seismic data blasting by blasting through the abnormal amplitude elimination technology; thirdly, the processing device carries out inter-blasting energy balancing processing of multiple blasting set records on the seismic data after the single-blasting energy balancing processing is conducted. According to the seismic wave field energy balancing method, the difference of two links is eliminated from the energy perspective, the relative relation of a seismic wave field is not referred to, after seismic data energy balancing is carried out, the obtained result is that superficial-layer energy is stronger than deep-layer energy and near energy is stronger than far energy, and the relative relation of the wave field is kept. In addition, the embodiment of the invention further provides the seismic wave field energy balancing processing device, and energy balancing processing with kept seismic wave field characteristics can be achieved.

Description

technical field [0001] The invention relates to a seismic data processing method, in particular to a seismic wave field energy equalization method and a processing device. Background technique [0002] Seismic exploration is a method of using the difference in elasticity and density of underground media to infer the shape of underground structures and the properties of rock formations by observing and analyzing the response of the earth to artificially excited seismic waves. Seismic prospecting is one of the important means of surveying oil and gas resources before drilling. Through seismic prospecting, we can understand the geological conditions of the underground, find and identify oil and natural gas resources (that is, oil and gas resources). At the same time, seismic exploration is also widely used in coal field and engineering geological survey, regional geological research and crustal research. Seismic exploration is usually divided into refracted wave seismic explor...

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Application Information

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IPC IPC(8): G01V1/28G01V1/36
Inventor 徐基祥
Owner PETROCHINA CO LTD
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