Practice and cognition on heavy oil cold production in F Oilfield of L district in Sudan

Major oil layers A and B are heavy oil reservoirs of F Oilfield in L district of Sudan.The oilfield features in loose and unconsolidated sandstone reservoirs.The well completion method and the perforation parameter design method that suit the reservoir features of the oilfield are analyzed.This paper also discusses whether there are such screw pumps that suit so deep oil reservoirs,how to determine the pump depth,whether earthworm holes come into being and what the sand law and the sand-washing cycle are like while producing oil reservoirs.Systematic technologies and methods are figured out based on the experience and technologies of Canada.It will be a good reference to the development of similar oil reservoir in other districts of Sudan.