Laboratory study of gravity drainage in fractured systems under miscible conditions

Conference · Mon Jan 01 04:00:00 EST 1968 · Soc. Pet. Eng. AIME, Pap.; (United States)

OSTI ID:5492782

Thompson, J L; Mungan, N

Laboratory displacement tests were performed to study oil-recovery efficiency by gravity drainage in fractured systems under miscible conditons. The purpose of the study was to examine the influences of the displacement rate, fracture density, fracture orientation, fracture permeability, matrix permeability, cross flow, core length, and connate water on the oil recovery. It was found that displacement rate, matrix permeability, and the subvertical fractures affected oil recovery most. The critical flow rate, based on the matrix permeability, was found to be a significant factor in the process. For displacement rates below the critical flow rate, the oil-recovery efficiency appeared to be unaffected by the density of the subvertical fractures. At the high displacement rates, the fracture density becomes important, with the recovery being the most efficient in the core having the greatest number of the subvertical fractures. The magnitude of the fracture permeability, the fracture orientation, the core length, and the connate water have little effect on the oil- recovery efficiency.

• Research Organization: Sinclair Oil and Gas Co; Can Petr Recovery Res Inst
• OSTI ID: 5492782
• Report Number(s): CONF-680926-
• Conference Information: Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Journal Volume: SPE2232
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
BENCH-SCALE EXPERIMENTS
CONNATE WATER
CRITICAL FLOW
DRAINAGE
EFFICIENCY
ENHANCED RECOVERY
FAILURES
FLOW RATE
FLUID FLOW
FLUID INJECTION
FRACTURE MECHANICS
FRACTURE PROPERTIES
FRACTURED RESERVOIRS
FRACTURES
GROUND WATER
HYDRAULIC FRACTURES
HYDROGEN COMPOUNDS
INTERSTITIAL WATER
MECHANICAL PROPERTIES
MECHANICS
MISCIBLE-PHASE DISPLACEMENT
OIL WELLS
OXYGEN COMPOUNDS
PERMEABILITY
RECOVERY
WATER
WELLS