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Title: Alkaline flooding injection strategy

The objective of this project is to improved alkali-surfactant flooding methods, and this includes determining the proper design of injection strategy. Several different injection strategies have been used or suggested for recovering heavy oils with surfactant-enhanced alkaline flooding methods. Oil recovery was compared for four different injection strategies: (1) surfactant followed by polymer, (2) surfactant followed by alkaline polymer, (3) alkaline surfactant followed by polymer, and (4) alkali, surfactant, and polymer mixed in a single formulation. The effect of alkaline preflush was also studied under two different conditions. All of the oil recovery experiments were conducted under optimal conditions with a viscous, non-acidic oil from Hepler (KS) oil field. The coreflood experiments were conducted with Berea sandstone cores since field core was not available in sufficient quantity for coreflood tests. The Tucker sand of Hepler field is a Class I fluvial dominated deltaic reservoir, as classified by the Department of Energy, which has been selected as the site of a DOE-sponsored field pilot test.
Authors:
;
Publication Date:
OSTI Identifier:
5799532
Report Number(s):
NIPER-563
ON: DE92001032
DOE Contract Number:
FC22-83FE60149
Resource Type:
Technical Report
Research Org:
National Inst. for Petroleum and Energy Research, Bartlesville, OK (United States)
Sponsoring Org:
DOE; USDOE, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; ALKALI METAL COMPOUNDS; INJECTION; PETROLEUM; ENHANCED RECOVERY; SURFACTANTS; DISPLACEMENT FLUIDS; INJECTION WELLS; POLYMERS; SANDSTONES; ENERGY SOURCES; FLUIDS; FOSSIL FUELS; FUELS; INTAKE; RECOVERY; ROCKS; SEDIMENTARY ROCKS; WELLS 020300* -- Petroleum-- Drilling & Production