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Ocean seismic wave simulation method and system based on Gaussian random distribution

A technique of stochastic distribution, analog methods, applied in the fields of seismology, seismic signal processing, etc. for areas covered by water

Pending Publication Date: 2021-04-30
CHINA PETROLEUM & CHEM CORP +1
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  • Description
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Problems solved by technology

The current horizontal layered model is difficult to describe these characteristics, so it is necessary to carry out the research and application of new methods for marine seismic wave forward modeling

Method used

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  • Ocean seismic wave simulation method and system based on Gaussian random distribution
  • Ocean seismic wave simulation method and system based on Gaussian random distribution
  • Ocean seismic wave simulation method and system based on Gaussian random distribution

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Embodiment approach

[0061] According to another embodiment of the present invention, a system for simulating marine seismic waves based on Gaussian random distribution is provided, the system comprising:

[0062] a memory storing computer-executable instructions;

[0063] a processor, the processor runs the computer-executable instructions in the memory, and performs the following steps:

[0064] Seawater velocity is regarded as a combination of large-scale velocity background field and small-scale velocity disturbance;

[0065] Establish a seawater velocity model with Gaussian random distribution;

[0066] Seismic wave forward modeling is carried out on the seawater velocity model based on Gaussian random distribution.

[0067] Furthermore, seawater velocity is regarded as a combination of large-scale velocity background field and small-scale velocity disturbance, where the small-scale velocity disturbance is regarded as a random event, which is abstractly described by a two-dimensional or thr...

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Abstract

The invention provides an ocean seismic wave simulation method and system based on Gaussian random distribution. The method comprises the following steps: regarding the seawater speed as the combination of a large-scale speed background field and small-scale speed disturbance; establishing a seawater speed model of Gaussian random distribution; and carrying out seismic wave forward modeling on the seawater speed model based on Gaussian random distribution. According to the method, small-scale disturbance of the seawater speed is described through Gaussian random distribution, conventional horizontal layered medium hypothesis is overcome, seawater speed change characteristics are described more truly, and the scattering and attenuation phenomena of seismic waves in seawater are effectively reflected.

Description

technical field [0001] The invention belongs to the field of forward modeling simulation of seismic waves in oil and gas exploration and development, and in particular relates to a method and system for simulating marine seismic waves based on Gaussian random distribution. Background technique [0002] Due to the limitation of land space and resources, the sea will be the object of large-scale human occupation and the goal of marching in the new century. The development and utilization of seabed oil and gas resources will have enormous potential. Although there are some similarities between offshore oil and gas exploration and onshore oil and gas exploration, the differences are more critical. [0003] Theoretically, the oil and gas exploration methods and technologies on land are applicable to offshore oil and gas exploration. However, many exploration methods and technologies are restricted due to the harsh natural geographical environment of the ocean and the physical a...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28G01V1/38
CPCG01V1/28G01V1/38
Inventor 齐鹏
Owner CHINA PETROLEUM & CHEM CORP
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