APPLICATION OF ASSISTANT CHEMICAL VISCOSITY REDUCING TECHNOLOGY IN STEAM SOAKING IN SHALLOW LAYER VISCOUS OIL RESERVOIR IN XINJIANG

The viscous thinner using in Kelamayi Oilfield were studied and filtered in lab according to the over high viscidity and lower fluidity of viscous oil. Based on the formation characteristic and production condition, viscosity reducing measures have been done which included formation viscosity reducing and well bore viscosity reducing. The later includes self-compensation viscosity reducing and computation station viscosity reducing. Using this technology, the fluidity of oil is easier, the producing period is longer and the oil yield is higher.