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A sampling method and device

A sampling point and under-sampling technology, applied in the field of geophysical exploration, can solve the problems of under-sampling and reconstruction effect of important geological information, redundancy and dispersion of collected data, etc.

Active Publication Date: 2020-01-07
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because irregular sampling (random sampling) is completely random, it often causes the sampling points (shot points or receiving points) to be too concentrated or too scattered, which may cause too much sampling of unimportant geological information, resulting in the collection of data Redundancy, or too little sampling of important geological information, resulting in poor reconstruction effect

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Embodiment Construction

[0032] Embodiments of the present application provide a sampling method and device.

[0033] 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.

[0034] The embodiment of this application provides a sampling method. The sampling method provides distribution data of sampling points in the seismic acquisition and observation system in the target area.

[0035] In this embodiment, the sampling poin...

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Abstract

The embodiment of the invention discloses a sampling method and device. Sampling point distribution data of a target area in a seismic acquisition and observation system are provided, the sampling point distribution data meet complete sampling conditions, and a distance between adjacent two sampling points in the target area is included in the sampling point distribution data; according to the point distance, the target area is divided to multiple quadrat subareas, and each quadrat subarea contains multiple sampling points; and according to a specified undersampling factor, multiple sampling points in the quadrat subarea are subjected to random sampling to obtain undersampling point distribution data of the target area. According to the technical scheme provided in the embodiment of the invention, the undersampling point distribution data can meet randomness requirements, and a condition in which the sampling points are over dense or over scattered is avoided.

Description

technical field [0001] The present application relates to the technical field of geophysical prospecting, in particular to a sampling method and device. Background technique [0002] In the process of geophysical exploration, it is often necessary to first collect data from the target area through artillery inspection, and then perform specific data reconstruction based on the collected data. When this method is implemented, in order to achieve a better reconstruction effect, it is often necessary to deploy a large number of shot points and receiving points, and it will also generate a large amount of data processing. [0003] In order to take into account the production cost, that is: to arrange as few shot points and receiving points as possible; at the same time, to improve the effect of data reconstruction. In recent years, based on the development of compressed sensing theory, a new method of data acquisition and data reconstruction has been proposed. That is, data co...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/00
CPCG01V1/003
Inventor 杨敬磊倪宇东邬龙李伟波柳兴刚董烈乾
Owner BC P INC CHINA NAT PETROLEUM CORP