Development and Evaluation of EOR Polymers Suitable for Hostile Environments—Part 1: Copolymers of Vinylpyrrolidone and Acrylamide

Autor:	Peter H. Doe, Ahmad Moradi-Araghi, James E. Shaw, G. Allan Stahl
Rok vydání:	1987
Předmět:	chemistry.chemical_classification Materials science Precipitation (chemistry) Process Chemistry and Technology Artificial seawater Polymer chemistry Chemical engineering Polyamide Copolymer Organic chemistry Seawater Energy source Porous medium
Zdroj:	SPE Reservoir Engineering. 2:461-467
ISSN:	2469-9683 0885-9248
DOI:	10.2118/14233-pa
Popis:	Summary This paper describes the properties of synthetic water-soluble polymers that are stable for extended periods of time in hard brines at very high temperatures. Several copolymers of vinylpyrrolidone (VP) and acrylamide (AM) were prepared and evaluated in our laboratories for EOR application in hostile environments. VP in the copolymer composition protects AM against extensive thermal hydrolysis, which otherwise will result in loss of viscosity and precipitation. A range of VP/AM copolymer compositions was found to tolerate the harsh conditions of 250°F [121 °C] in seawater for extended periods of time and to be suitable for EOR application under these conditions. The performance of these polymers in porous media was evaluated by extensive coreflood experiments in Berea sandstone at 250°F [121 °C] with synthetic seawater. The results indicate that these copolymers can easily be injected into porous media and that they can be effective polymers for EOR application in hostile environments.
Databáze:	OpenAIRE
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