A method for improving seismic acquisition using an active ultralight seismic detection system

Abstract

The invention relates to a method for determining the optimal positioning of a source-receiver pair capable of acquiring seismic data, comprising: a first step, identifying a region of interest (32), which is the subject of an early seismic acquisition , in order to obtain an image of the subsoil of the region of interest; the second step is to obtain the seismic data acquired during the early seismic acquisition of the region of interest during the time of interest; the third step is to apply the seismic data partial or full demigration to determine the position of each source-receiver pair (31, 34) for said region of interest during said time of interest The image of subsoil has made contribution; The 4th step, obtain the unprocessed track of described source-receiver pair position (31,34); The 5th step, select at least one best from described multiple unprocessed track unprocessed traces; and a sixth step of determining source-receiver pair positions corresponding to said at least one best unprocessed trace (31, 34).

Description

technical field [0001] The present invention generally relates to the acquisition of seismic data in land and marine areas. Background technique [0002] It is known from the prior art that images of the geophysical structure of the subsoil can be generated by acquiring seismic data. Although the image does not precisely indicate the location of natural resources such as oil or gas, it does allow those skilled in the art to determine the presence or absence of these resources. Therefore, the continuous generation of such images is an essential part of the process of exploring the subsoil to discover these natural resources. In order to generate these images, several methods are known in the prior art. For offshore surveys, ship-mapping seismic streamers can be implemented. These streamers may be arranged horizontally relative to the sea floor at a constant depth. The ship also mapped a set of seismic sources capable of producing seismic waves. These seismic waves travel...

AI Technical Summary

Problems solved by technology

The limited number of source-receiver pairs makes traditional spatial noise suppression less applicable

These traditional spatial noise suppression methods can sometimes mask the effects of low yields, i.e., seismic properties that change by less than 1% due to changes in the physical properties of the points over the considered time span

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