Bakken Petroleum System (BPS) has a great potential for enhanced oil recovery (EOR) because of the high original oil-in-place estimates accompanied by low primary recovery potential. BPS is composed of both conventional and unconventional units exhibiting significant variations in lithology, rock texture, clay content, porosity, and total organic carbon. Two wireline-log-derived EOR-efficiency indices are generated for a 200-feet depth interval in the BPS to identify flow units suitable for EOR using light, miscible hydrocarbon injection. The Microscopic Displacement (MD) Index exhibits higher resolution compared to the Ranking (R) Index. MD index relies on a novel method to calculate the miscible free-oil volume from subsurface NMR T2-distribution logs. At a resolution of 1-foot depth interval, several flow units were successfully identified in the Middle Bakken formation that exhibit high miscible-gas-injection recovery potential.
Presentation Date: Tuesday, September 26, 2017
Start Time: 11:00 AM
Location: Exhibit Hall C/D
Presentation Type: POSTER