US 2026/0211141 A1 · TOMOGRAPHIC INVERSION

Abstract

There is provided a method for determining a physical property of a subsurface target volume, as well as systems and computer readable media for performing the same. The method comprises receiving a plurality of signals detected by a plurality of receivers arranged on a surface above the subsurface target volume, wherein each respective signal of the plurality of signals is detected by a respective receiver of the plurality of receivers, cross-correlating signals between the plurality of receivers to obtain empirical travel time data for surface waves between a plurality of virtual source-receiver pairs, determining a model of the physical property of the subsurface target volume, the model comprising a first plurality of cells arranged in a first two-dimensional grid, wherein each cell has a respective physical property value and wherein the two-dimensional grid spans at least the area of the surface. Unlocking insights from Geo-Data, the present invention further relates to improvements in sustainability and environmental developments: together we create a safe and livable world.

Claims22

Dependent claims

A computer implemented method for determining a physical property of a subsurface target volume, the method comprising:

receiving a plurality of signals detected by a plurality of receivers arranged on a surface above the subsurface target volume, wherein each respective signal of the plurality of signals is detected by a respective receiver of the plurality of receivers;
cross-correlating signals between the plurality of receivers to obtain empirical travel time data for surface waves between a plurality of virtual source-receiver pairs;
and
determining a model of the physical property of the subsurface target volume, the model comprising a first plurality of cells arranged in a first two-dimensional grid, wherein each cell has a respective physical property value and wherein the two-dimensional grid spans at least an area of the surface, wherein determining the model comprises:
selecting a subset of the plurality of virtual source-receiver pairs, wherein a surface wave path between each virtual source and respective receiver traverses two or more cells of the first plurality of cells;
performing tomographic inversion on the empirical travel time data between each virtual source-receiver pair in the subset to obtain a physical property value for each cell.

3 more elements

A system comprising:

one or more processors;
one or more memories having stored thereon computer readable instructions configured to cause the one or more processors to:
receive a plurality of signals detected by a plurality of receivers arranged on a surface above a subsurface target volume, wherein each respective signal of the plurality of signals is detected by a respective receiver of the plurality of receivers;
cross-correlating signals between the plurality of receivers to obtain empirical travel time data for surface waves between a plurality of virtual source-receiver pairs;
and
determine a model of a physical property of the subsurface target volume, the model comprising a first plurality of cells arranged in a two-dimensional grid, wherein each cell has a respective physical property value and wherein the two-dimensional grid spans at least an area of the surface, wherein determining the model comprises:
select a subset of the plurality of virtual source-receiver pairs, wherein a surface wave path between each virtual source and respective receiver traverses two or more cells of the first plurality of cells;
perform tomographic inversion on the empirical travel time data between each virtual source-receiver pair in the subset to obtain a physical property value for each cell.

5 more elements

Dependencies are inferred from the claim text.

Tomographic inversion

Life of this patent

Tomographic inversion

Life of this patent

Abstract

Claims22