Open Access

ARTICLE

Study and Application of Waterflood Reservoir Protection Technology in Developing Low Permeability Reservoirs

by

1 State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing, 102249, China.
2 Tan Hai development company, China National Petroleum Corporation, Tian Jin 300289, China.

Structural Longevity 2013, 10(1), 49-57. https://doi.org/10.3970/sl.2013.010.049

Abstract

Developing low and extra-low permeability reservoirs becomes more and more important to the sustainable energy development in China and waterflood development is the common development mode. But with the oilfield development, water injection well has also exposed some questions gradually, such as the injection pressure increases, water injection rate decreases and so on. We proposed a new reservoir protection technology by adding new anti-swelling agent NTW-1 and fluorocarbon surfactant FCS-08 in the injection water. NTW-1 has good antiswelling ability and FCS-08 could change rock surface to neutral wetting. After successful field application in ShengLi oilfield in china, water injection pressure reduced by 21.7%, daily water-injection rate increased by 31.8%. it is proved that the new reservoir protection technology has well reservoir protection effect which has good decompression and augmented injection function.

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Keywords

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