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Title: A comprehensive study on the effects of temperature, surface age, added surfactant, salinity, and bulk viscosity on coalescence time, film rigidity, and interfacial tension: Topical report

The interfacial behavior of a Wilmington crude oil was studied as part of our investigations of enhanced oil recovery by weakly alkaline solutions. For some systems, the spinning drop appratus can be used to measure transient interfacial tension (IFT) effects, coalescence times of oil drops, and film rigidity simultaneously, for rapid screening of chemical slug composition for the potential of improving oil recovery by the mechanisms of oil mobilization and oil bank formation. The experimental results presented include the effects of temperature, surface age, salinity, added surfactant, and polymer on coalescence time, film rigidity, and IFT behavior. Oil displacement tests were performed using surfactant-enhanced bicarbonte solutions formulated for improved mobility control and for improved oil mobilization and oil drop coalescence. The most significant result of this work was that we were able to measure the dynamics in IFT between 2 coalescing oil drops as perturbations in the equilibrium concentration of surfactant at the interface occurred during film drainage. The accuracy of the technique for measuring IFT and film rigidity improved as the contact radii between the oil drops increased. 17 refs., 13 figs., 11 tabs.
Authors:
;
Publication Date:
OSTI Identifier:
5635251
Report Number(s):
NIPER-278
ON: DE88001211
DOE Contract Number:
FC22-83FE60149
Resource Type:
Technical Report
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted
Research Org:
National Inst. for Petroleum and Energy Research, Bartlesville, OK (USA)
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; CAUSTIC FLOODING; BENCH-SCALE EXPERIMENTS; OIL WELLS; PETROLEUM; COALESCENCE; SURFACE TENSION; BRINES; CONTROL; DENSITY; ENHANCED RECOVERY; EXPERIMENTAL DATA; INTERFACES; MEASURING METHODS; MOBILITY; POLYMERS; RESEARCH PROGRAMS; SALINITY; SODIUM CARBONATES; SODIUM CHLORIDES; SURFACTANTS; TEMPERATURE EFFECTS; VISCOSITY; ALKALI METAL COMPOUNDS; CARBON COMPOUNDS; CARBONATES; CHLORIDES; CHLORINE COMPOUNDS; DATA; ENERGY SOURCES; FLUID INJECTION; FOSSIL FUELS; FUELS; HALIDES; HALOGEN COMPOUNDS; INFORMATION; NUMERICAL DATA; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RECOVERY; SODIUM COMPOUNDS; SURFACE PROPERTIES; WATERFLOODING; WELLS 020300* -- Petroleum-- Drilling & Production