US 11,921,255 B2
Reservoir modeling for unconventional reservoirs
Yongshe Liu, Houston, TX (US); Kevin T. Raterman, Houston, TX (US); and Logan A. Warren, Houston, TX (US)
Assigned to CONOCOPHILLIPS COMPANY, Houston, TX (US)
Filed by ConocoPhillips Company, Houston, TX (US)
Filed on Apr. 30, 2020, as Appl. No. 16/862,775.
Claims priority of provisional application 62/840,925, filed on Apr. 30, 2019.
Prior Publication US 2020/0348445 A1, Nov. 5, 2020
Int. Cl. G01V 99/00 (2009.01); E21B 49/00 (2006.01); E21B 43/26 (2006.01); E21B 47/002 (2012.01); E21B 47/06 (2012.01); E21B 47/07 (2012.01); E21B 47/11 (2012.01)
CPC G01V 99/005 (2013.01) [E21B 49/00 (2013.01); E21B 43/26 (2013.01); E21B 47/002 (2020.05); E21B 47/06 (2013.01); E21B 47/07 (2020.05); E21B 47/11 (2020.05); E21B 2200/20 (2020.05); G01V 2210/646 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A method for modelling a reservoir, the method comprising:
receiving, at a processor, a data set relating to one or more wells within the reservoir;
processing, via the processor, the data set to identify one or more hydraulic fractures extending from the one or more wells into the reservoir;
categorizing, via the processor, the one or more hydraulic fractures as one or more principal fractures or one or more secondary fractures;
identifying, via the processor, the one or more principal fractures as Type 1 principal fractures or Type 2 principal fractures based on a correlation with far field pressure data, wherein the Type 2 principal fractures have a lower fracture conductivity, stronger stress dependent permeability reduction, and weaker drainage in far field compared to the Type 1 principal fractures;
identifying, via the processor, a near well high permeability region for each of the one or more wells;
generating, via the processor, a gridded fracture plane for a plurality of predetermined depths of the one or more wells, the gridded fracture plane including a fractured region and an unfractured region;
determining, via the processor, a fracture permeability region;
assembling, via the processor, the gridded fracture plane for each of the plurality of predetermined depths, the fracture permeability regions, and the near well high permeability region for each of the one or more wells;
generating, via the processor, a three-dimensional reservoir model based on the assembled gridded fracture plane for each of the plurality of predetermined depths, the fracture permeability regions, and the near well high permeability region for each of the one or more wells.