Preparation and Study of Polyvinyl Alcohol Gel Structures with Acrylamide and 2-Acrylamido-2-methyl-1-propanesulfonic Acid for Application in Saline Oil Reservoirs for Profile Modification
Source abstract
Abstract
Polymer gels can be effectively applied to plug fractured reservoirs and carbonate cave strata. Herein, polyvinyl alcohol (PVA), acrylamide, and 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS) were used as raw materials to prepare interpenetrating three-dimensional network polymer gels using formation saltwater in the Tahe oilfield (Tarim Basin, NW China) as a solvent. The effect of AMPS concentration on the gelation properties of PVA in high-temperature formation saltwater was analyzed. Further, the effect of PVA concentration on the strength and viscoelastic properties of polymer gel was studied. The polymer gel could retain stable continuous entanglement at 130 °C and exhibited satisfactory thermal stability. Continuous step oscillation frequency tests showed that it exhibited an excellent self-healing performance. Scanning electron microscopy images of the simulated core by gel plugging showed that the polymer gel could firmly fill the porous media, indicating that the polymer gel exhibits excellent application prospects in oil and gas reservoirs under high-temperature and high-salinity conditions.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Enhanced Oil Recovery Techniques · Hydraulic Fracturing and Reservoir Analysis · Hydrocarbon exploration and reservoir analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources & Key Laboratory of Cleaner Transition of Coal and Chemicals Engineering, College of Chemical Engineering, Xinjiang University, Urumqi 830017, Xinjiang, China
Key Laboratory for EOR of Carbonate Fractured Vuggy Reservoir, SINOPEC, Urumqi 830011, Xinjiang, China
Funding
China Petrochemical Corporation · National Science and Technology Major Project
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