Economic evaluation shows polymer flooding effectiveness

Economic analysis shows the effectiveness of polymer flooding in Daqing's Lamadian oil field, in northern China.Daqing Oilfield Co. Ltd., a unit of PetroChina Co. Ltd. operates the field. China established PetroChina on Nov. 5, 1999, as a joint stock company with limited liabilities as part of the restructuring of the China National Petroleum Corp.The polymer flood is in laminar sandstone reservoirs controlled by structure. The field has a gas cap and began producing high water cuts after producing for more than 29 years.Experimental polymer flooding began in 1994 on the field's south tract in a thick oil bed, Pu I 1-2. The flooding increased oil production, decreased water produc...

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