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Three-dimensional Lowrank finite difference wave field numerical simulation method and device and electronic equipment

A numerical simulation and finite difference technology, applied in seismic signal processing and other directions, can solve the problem of low accuracy of elastic wave field and achieve the effect of improving accuracy

Pending Publication Date: 2022-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the embodiment of the present invention provides a three-dimensional Lowrank finite-difference wavefield numerical simulation method, device and electronic equipment, at least solving the problem of low precision of the elastic wavefield in the prior art

Method used

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  • Three-dimensional Lowrank finite difference wave field numerical simulation method and device and electronic equipment
  • Three-dimensional Lowrank finite difference wave field numerical simulation method and device and electronic equipment
  • Three-dimensional Lowrank finite difference wave field numerical simulation method and device and electronic equipment

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Experimental program
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Embodiment 1

[0084] Such as figure 1 A three-dimensional Lowrank finite-difference wavefield numerical simulation method is shown, including:

[0085] Step S101:

[0086] Obtain velocity model and grid point information;

[0087] Step S102: Construct an elastic recursive time-integration operator based on the obtained velocity model and grid point information;

[0088] Step S103: Obtain a decomposed elastic recursive time integral operator based on the elastic recursive time integral operator;

[0089] Step S104: Obtaining finite difference coefficients based on the decomposed elastic recursive time integral operator;

[0090] Step S105: Based on the finite difference coefficients and the elastic wave equation, numerical simulation of the wave field is performed to obtain the elastic wave field.

[0091] Optionally, the construction of an elastic recursive time integration operator based on the obtained velocity model and grid point information includes:

[0092] Build an elastic recu...

Embodiment 2

[0124] Such as Figure 6 As shown, a three-dimensional Lowrank finite-difference wavefield numerical simulation device includes:

[0125] Acquisition module: used to obtain velocity field and grid information;

[0126] Building block: construct an elastic recursive time integral operator based on the obtained velocity model and grid point information;

[0127] Decomposition module: an elastic recursive time integral operator for decomposing based on the elastic recursive time integral operator;

[0128] Finite difference system module: used to obtain finite difference coefficients based on the elastic recursive time integral operator of the decomposition;

[0129] Elastic wave field module: used to perform wave field numerical simulation based on the finite difference coefficients and the elastic wave equation to obtain the elastic wave field.

[0130] For detailed descriptions of this embodiment, reference may be made to corresponding descriptions in the preceding embodime...

Embodiment 3

[0132] An embodiment of the present invention provides an electronic device including a memory and a processor,

[0133] a memory storing executable instructions;

[0134] A processor, the processor runs the executable instructions in the memory to implement the three-dimensional Lowrank finite difference wavefield numerical simulation method of the embodiment.

[0135] The memory is used to store non-transitory computer readable instructions. Specifically, the memory may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may include, for example, random access memory (RAM) and / or cache memory (cache). The non-volatile memory may include, for example, a read-only memory (ROM), a hard disk, a flash memory, and the like.

[0136] The processor may be a central processing unit (CPU) or other form of processing unit having data processing capab...

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Abstract

The embodiment of the invention discloses a three-dimensional Lowrank finite difference wave field numerical simulation method and device and electronic equipment. The three-dimensional Lowrank finite difference wave field numerical simulation method comprises the following steps: acquiring a speed model and grid point information; constructing an elastic recursion time integral operator based on the obtained speed model and grid point information; obtaining a decomposed elastic recursion time integral operator based on the elastic recursion time integral operator; obtaining a finite difference coefficient based on the decomposed elastic recursion time integral operator; and performing wave field numerical simulation based on the finite difference coefficient and an elastic wave equation to obtain an elastic wave field. The purpose of improving the elastic wave field precision is achieved.

Description

technical field [0001] The invention belongs to the technical field of seismic wave simulation, and more specifically relates to a three-dimensional Lowrank finite difference wave field numerical simulation method, device and electronic equipment. Background technique [0002] In recent years, the industry's demand for seismic exploration technology for complex oil and gas reservoirs has been continuously increasing. Exploration methods based on elastic theory have become an important tool for describing complex structures. It provides an important theoretical basis for elastic wave field seismic exploration. The construction of high-precision elastic wave field continuation algorithm is an important content of elastic wave numerical simulation, among which the recursive time integration algorithm is an important method that can satisfy both time and space high-precision wave field continuation, which has emerged in recent years. At present, this method is limited to the co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28
CPCG01V1/28
Inventor 崔月韩冬陶永慧
Owner CHINA PETROLEUM & CHEM CORP
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