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This is a Experimental Study study.

November 4, 2025

Study and Field Trial of Discontinuous Chemical Flooding for Mature Offshore Oilfield with Ultra High Water Cut

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Enhanced oil recovery achieved through discontinuous chemical flooding in mature oilfields with high water cut.
Hydrogen sulfide treatment lowered concentration from 50ppm to below 15ppm, improving operation efficiency.
Field trial involved addressing injectivity challenges with different polymer molecular weights and acidizing treatments.
Significant oil incremental performance seen in 11 of 17 wells, with total estimated production increase of 1.69×104 m3.

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Field trial demonstrates recovery rate improvements in oilfields with 95% water cut, highlighting potential of DCF.

Zhang et al. (2025) studied this question.

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