Considerable potential remains after Daqing polymer flood

09/15/2008
At present, one potential for additional oil recovery from Daqing oil field in northern China is the remaining oil contained in reservoirs that have undergone polymer flooding.The first field-scale polymer flooding at Daqing started in 1996, and polymer flooding has shown good technical and economic results.By November 2007, Daqing already had 14 areas in which polymer injection had finished. These 14 areas have more than 2,000 production and injection wells.Oil recovery after polymer flooding from these areas is 52.8%, meaning that the areas still contain large amounts of crude oil.Determining the distribution of the remaining oil is the key for tapping this potential source of oil.Remai...
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