Starch graft copolymer and polymer gel applied in Bohai oilfield for water plugging and profile control and their mechanisms

Weijia Cao; Kun Xie; Xiaoyan Wang; Xiangguo Lu; Xin He; Guorui Xu; Xiang Li

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자료유형: 학술저널

저자정보: Weijia Cao (Northeast Petroleum University) Kun Xie (Northeast Petroleum University) Xiaoyan Wang (Northeast Petroleum University) Xiangguo Lu (Northeast Petroleum University) Xin He (Northeast Petroleum University) Guorui Xu (China Oilfield Services Limited of Tianjin Branch) Xiang Li (China Oilfield Services Limited of Tianjin Branch)

저널정보: 한국자원공학회 Geosystem Engineering Geosystem Engineering Vol.23 No.4

발행연도: 2020.1

수록면: 197 - 204 (8page)

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Water plugging and profile control are becoming increasingly important in water-flooding oilfields. In this study, the experiments were conducted to determine the microscopic mechanisms and effects of water plugging, profile control, and ‘water plugging + profile control’. Initially, the starch graft copolymer and polymer gel used showed only slight changes in viscosity. However, within 12 h, the viscosities exceeded 100,000 mPa·s, which indicated that the two agents had good plugging effects. When the plugging agent was starch graft copolymer, the oil recovery with water plugging was 2% and 0.8% higher than the values for profile control with polymer gel on a heterogeneous core and parallel core, respectively. The recoveries with the ‘water plugging + profile control’ combination for the heterogeneous core and parallel core were 25.9% and 25.5%, respectively, which showed the superior enhanced oil recovery. The mechanism research showed that when the reservoir entered the middle and high water-cut development stages, the residual oil was mainly distributed in the middle- and low-permeability layers near the oil well. Thus, water plugging provided a greater increase in oil recovery. Under the actual demands of the Bohai oilfield, it would be better to adopt a combined water plugging and profile control operation.

#Bohai oilfield #starch graft copolymer #polymer gel #water plugging #profile control

참고문헌 (21)

참고문헌 신청

Adewunmi, A. A. / 2017 / Modeling the thermal behavior of coal fly ash based polymer gel system for water reduction in oil and gas wells / Journal of Petroleum Science and Engineering 157:430~440

Al, E. / 2008 / Synthesis and properties of starch-graft-acrylic acid/Na-montmorillonite superabsorbent nanocomposite hydrogels / Journal of Applied Polymer Science 109(1):16~22

Amirian, E. / 2018 / Performance forecasting for polymer flooding in heavy oil reservoirs / Fuel 216:83~100

Brattekås, B. / 2017 / New insight into wormhole formation in polymer gel during water chase floods with positron emission tomography / SPE Journal 22(1):32~40

Cao, W. J. / 2018 / Effect of space size on gel formation of starch graft copolymer and its mechanism : Takingthe reservoirs of SZ36-1 block in Bohai oilfield as an example / Petroleum Geology and Recovery Efficiency 25(4):1~7

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