Actual Field Data Show that Production Costs of Polymer Flooding can be Lower than Water Flooding

摘要

Daqing Oil Field started industrial scale polymerrn(polyacrylamide) flooding in 1996. More than 3,000 wells arernon polymer flood. The cumulative production by polymerrnflood is more than 400 million bbl, and annual production ofrnyear 2002 about 80 million bbl.rnActual field economic data show that the total costrn(including depreciation) per bbl of polymer oil is about $9, thernsame as water flooding in the same area. Analysis of the datarnshow that high incremental recovery (about 12% OOIP –rnoriginal oil in place), high production rate (about 4 times thatrnof water flooding) and low water oil ratio (a decrease of aboutrn5 fold) are the main reasons polymer flooding obtained suchrngood economic results.