US 12,241,362 B2
Methods for positioning a well for optimal fluid production
Peter Geiser, Lyons, CO (US); Laird Berry Thompson, Lake Oswego, OR (US); and Jan Meredith Vermilye, Lyons, CO (US)
Assigned to ENEGIS, LLC, Fairfax, VA (US)
Filed by G-O-Image, LLC, Lyons, CO (US)
Filed on Oct. 29, 2021, as Appl. No. 17/514,629.
Claims priority of provisional application 63/107,972, filed on Oct. 30, 2020.
Prior Publication US 2022/0136382 A1, May 5, 2022
Int. Cl. E21B 47/002 (2012.01); E21B 47/12 (2012.01); E21B 49/00 (2006.01); G06T 11/00 (2006.01)
CPC E21B 47/0025 (2020.05) [E21B 47/12 (2013.01); E21B 49/003 (2013.01); G06T 11/008 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for locating a well bore for fluid recovery, the method comprising the steps of:
acquiring a full activity volume (FAV) for a reservoir of interest from seismic energy generated by a country rock within the reservoir of interest, wherein the FAV comprises a plurality of voxels;
calculating a characteristic semblance value for all the voxels and a user-selected semblance statistical value of the characteristic semblance value over all the voxels, thereby obtaining a measure of a permeability field for the reservoir of interest;
determining a threshold semblance value (TSV) by identifying all voxels having a semblance value that is greater than or equal to the user-selected semblance statistical value above the characteristic semblance value, thereby mapping the permeability field;
identifying near well activity (NWA) voxels corresponding to the TSV voxels identified in the mapped permeability field;
wherein the NWA voxels correspond to a putative well bore location, thereby locating the well for fluid recovery from the mapped permeability field; and
wherein the semblance value is a time-varying semblance value.