Method for Subsurface Mapping Using Seismic Emissions

摘要

The invention comprises a method for mapping a volume of the Earth's subsurface encompassing a selected path within said volume, comprising dividing the volume of the Earth's subsurface into a three-dimensional grid of voxels and transforming detected seismic signals representing seismic energy originating from said volume of the Earth's subsurface when no induced fracturing activity is occurring along said selected path and conducted to a recording unit for recording into signals representing energy originating from the voxels included in said grid of voxels, and utilizing said transformed seismic signals to estimate spatially continuous flow paths for reservoir fluids through said volume of the Earth's subsurface to said selected path.

主权项

1. A method for mapping a volume of the Earth's subsurface encompassing a selected path within said volume, comprising:
dividing said volume of the Earth's subsurface into a three-dimensional grid of voxels; transforming detected seismic signals representing seismic energy originating from said volume of the Earth's subsurface and conducted to a recording unit for recording, the detected signals being at least one of electrical, magnetic or optical signals, the recorded signals representing energy originating from voxels included in said grid of voxels during a time when no induced fracturing activity is occurring along said selected path; and utilizing said transformed seismic signals to map spatially continuous flow paths for reservoir fluids through said volume of the Earth's subsurface to said selected path.