Application Prospects for Harmless Treatments of Oily Sludge in Changqing Oilfield

Treatment of oily sludge in Changqing oilfield, originating from producer/injector well field and settling tanks of united stations, has ever been an obsession in the development of oilfield for environmental concerns.In this article, some merits of oily sludge, including salinityresistance, shearing-resistance and matchability with formation, are analysed.In the background of present development stage for Changqing oilfield, where the numbers of high water-cut producers are increasing, the point of using oily sludge as conformance-control agents is put forward.