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Amplitude compensation method and device for volcanic rock VSP data

A technology of amplitude compensation and volcanic rocks, applied in the field of geophysical exploration, can solve the problems of the research results of amplitude compensation methods of volcanic rocks and the influence of volcanic rock reservoir frequency prediction research without depth domain VSP data

Active Publication Date: 2021-04-13
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

In the process of amplitude compensation, the analysis of VSP data shows that the seismic wave enters the igneous rock and there will be a rapid attenuation phenomenon. Therefore, it will affect the research on the absorption of igneous rock formations and the frequency prediction research of volcanic rock reservoirs.
At present, there is no research result on the amplitude compensation method of volcanic rocks in the depth domain VSP data

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  • Amplitude compensation method and device for volcanic rock VSP data
  • Amplitude compensation method and device for volcanic rock VSP data
  • Amplitude compensation method and device for volcanic rock VSP data

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Embodiment Construction

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. the embodiment. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] The phenomenon of rapid attenuation of seismic waves entering igneous rocks occurs. Without considering the formation absorption attenuation, spherical diffusion attenuation and transmission attenuation are two main factors. Both of them must be considered at the same time to achieve a better seismic compensation effect of volcanic rocks.

[0024] Based on this, a method and d...

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Abstract

The invention provides an amplitude compensation method and device for volcanic rock VSP data. The method comprises the following steps: acquiring the volcanic rock VSP data; determining VSP interval velocity according to the volcanic rock VSP data, and determining density logging data according to the logging data and the volcanic rock VSP data, wherein the sampling interval of the density logging data is consistent with that of the VSP data; determining a compensation function according to the VSP interval velocity and the density logging data, wherein the compensation function comprises an attenuation function and a transmission function; and compensating the amplitude of the volcanic rock VSP data according to the compensation function. The compensation problem of volcanic stratum VSP data amplitude attenuation is effectively solved, and volcanic stratum seismic wave amplitude information can be recovered.

Description

technical field [0001] The invention relates to the technical field of geophysical exploration, in particular to an amplitude compensation method and device for volcanic rock VSP data. Background technique [0002] In recent years, borehole seismic technology has developed rapidly and has played an important role in the exploration and development of oil and gas resources. As a key processing link of borehole seismic, VSP (Vertical Seismic Profiling, vertical seismic profile) data compensation method has also been developed to a certain extent. Volcanic gas reservoirs are characterized by complex lithology and strong heterogeneity, making exploration and development difficult, and higher requirements are put forward for all aspects of seismic processing. In the process of amplitude compensation, the analysis of VSP data shows that the seismic wave will attenuate rapidly when entering the igneous rock. Therefore, it will affect the research on the absorption of igneous rock f...

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Application Information

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IPC IPC(8): G01V1/30G01V1/40
CPCG01V1/307G01V1/303G01V1/40G01V2210/161G01V2210/6222G01V2210/63
Inventor 蔡志东王学军王阳赵小辉朱兴卉王适择
Owner BC P INC CHINA NAT PETROLEUM CORP