Field polymer stability studies
Conference
·
OSTI ID:7301340
A field test was performed to study the shear degradation of polyacrylamide in a polymer flood. The waterflooded Minnelusa sands in northeastern Wyoming (average porosity 18.34 percent, average permeability 230 md) was treated with an aqueous polymer flood containing Pusher 700. The crude oil in the reservoir had a gravity of 20.7/sup 0/ API and a viscosity of 23 cp at 140/sup 0/F (reservoir temperature). Flood viscosity was greatly decreased by the presence of calcium ions, due to anhydrite dissolution. Shear degradation of the polymer and Ca/sup + +/ contamination made polymer flood effectiveness economically unattractive.
- OSTI ID:
- 7301340
- Country of Publication:
- United States
- Language:
- English
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