Influence of Wellhead Back Pressure on the Crude Oil Gathering System

By analyzing influence of well back pressure on oil well output,power consumption of beam pumping unit and oil gathering system,it was concluded that the back pressure has no influence on the power consumption of beam pumping unit;However,due to connection of casing and tubing,back pressure has influence on casing pressure,so the back pressure can influence on output.At the meantime,influence of back pressure on blending system was calculated.The results show that to appropriately raise the back pressure can decrease investment and operation cost.