Improving reservoir conformance using gelled polymer systems. Annual report, September 25, 1992--September 24, 1993
The general objectives of the research program are to (1) identify and develop gelled polymer systems which have potential to improve reservoir conformance of fluid displacement processes, (2) determine the performance of these systems in bulk and in porous media, and (3) develop methods to predict their performance in field applications. The research focuses on three types of gel systems-an aqueous polysaccharide (KUSPI) that gels as a function of pH, polyacrylamide or xanthan crosslinked by CR(III) and a polyacrylamide-aluminum citrate system. Work to date has focused primarily on development of a database, selection of systems, and work to characterize the gel/polymer physical properties and kinetics. The use of ester hydrolysis to control the rate of pH change of a gel system has been investigated and this approach to gel-time control shows promise. Extensive kinetic data were taken on the uptake of CR(III) oligomers by polyacrylamide. A model was developed which describes very well the monomer uptake rates. The model described the dimer uptake data less well and the trimer uptake data poorly. Studies of the flow and gelation in rock materials have been initiated. A mathematical model of rock-fluid interaction during flow of high pH solutions has been developed.
- Research Organization:
- Kansas Univ., Lawrence, KS (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC22-92BC14881
- OSTI ID:
- 10176452
- Report Number(s):
- DOE/BC/14881-5; ON: DE94000142; BR: AC1510100
- Resource Relation:
- Other Information: PBD: Aug 1994
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
OIL WELLS
FLUID INJECTION
DISPLACEMENT FLUIDS
CHEMICAL COMPOSITION
POLYSACCHARIDES
GELATION
ROCK-FLUID INTERACTIONS
MATHEMATICAL MODELS
POROUS MATERIALS
PH VALUE
POLYAMIDES
CROSS-LINKING
CHROMIUM COMPOUNDS
ALUMINIUM COMPOUNDS
CITRATES
PHYSICAL PROPERTIES
KINETICS
FLUID FLOW
ENHANCED RECOVERY
EXPERIMENTAL DATA
PROGRESS REPORT
PETROLEUM
020300
400201
DRILLING AND PRODUCTION
CHEMICAL AND PHYSICOCHEMICAL PROPERTIES