2020
DOI: 10.1080/12269328.2020.1732838
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Starch graft copolymer and polymer gel applied in Bohai oilfield for water plugging and profile control and their mechanisms

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Cited by 20 publications
(7 citation statements)
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“…Artificial homogeneous cores cemented by quartz sands (4.5 cm × 4.5 cm × 30 cm) were used in this study to investigate the plugging ratio of the composite gel. , The permeabilities of these cores were approximately 9000, 5000, and 2000 mD, respectively, and their pore structures and permeabilities were similar to those of reservoir cores in the Bohai oilfield. The procedures to prepare the artificial cores can be found in the Chinese patent “Quartz sand epoxy resin cementation heterogeneity model making method”, , and the picture of the entire core coated with epoxy resin is shown in Figure .…”
Section: Methodsmentioning
confidence: 99%
“…Artificial homogeneous cores cemented by quartz sands (4.5 cm × 4.5 cm × 30 cm) were used in this study to investigate the plugging ratio of the composite gel. , The permeabilities of these cores were approximately 9000, 5000, and 2000 mD, respectively, and their pore structures and permeabilities were similar to those of reservoir cores in the Bohai oilfield. The procedures to prepare the artificial cores can be found in the Chinese patent “Quartz sand epoxy resin cementation heterogeneity model making method”, , and the picture of the entire core coated with epoxy resin is shown in Figure .…”
Section: Methodsmentioning
confidence: 99%
“…Some oil wells are prone to water problems due to formation heterogeneity, different fluid flows, long-term water flooding and casing damage, all of which have severe effects on the economic benefits and production life of oil wells [ 87 ]. Profile control and water shutoff are common methods for enhancing the oil recovery in water flooding oil fields.…”
Section: Polymer Gels For Oil–gas Productionmentioning
confidence: 99%
“…Polymer flooding technology has been gradually popularized in tertiary recovery industrialization in onshore oilfields, and has achieved good economic and social benefits [1][2][3][4][5][6][7][8]. Since firstly application of polymer flooding in the Bohai Oilfield, offshore polymer flooding has achieved significant results [9][10][11][12]. Polymer dissolution process is obviously different from a low-molecular substance, because exists swelling and dissolves process.…”
Section: Introductionmentioning
confidence: 99%