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Characterizing Preformed Particle Gel for Enhancing Oil Recovery in High Water Cut Wells
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, Saint Petersburg 2020, Nov 2020, Volume 2020, p.1 - 5
Abstract
High water cut is a common problem in mature oil reservoirs. So it’s necessary to use methods to control water production. Preformed particle gels (PPG) are one of the useful conformance controlling agents which are prepared at the surface prior to the injection. Acrylamide based PPGs are the most common ones in the oil industry. Their swelling capacity and elasticity is related to their synthesis composition, temperature and salinity . In this paper the effect of these parameters on swelling ratio of PPG is investigated. The results show that increasing the crosslinker amount leads to decreasing the weight loss during purification. Also PPG swelling ratio decreases drastically with increasing crosslinker/monomer molar ratio. Brine salinity and its temperature can also affect PPG swelling capacity such that PPG swelling ratio declines 3 to 10% by adding 5000 ppm NaCl to the water and increasing temperature from 25 to 55 ? C leads to a slight increase in PPG swelling ratio due to thermo-swelling phenomena.