苏丹L区F油田稠油冷采实践与认识

苏丹L区F油田主力油层A和B是稠油油藏,储层为胶结疏松的砂岩。针对该油田的储层特征,研究了与之相适应的完井方式、射孔参数设计方法,并探讨了对于如此埋深的油藏是否能有合适的螺杆泵,如何确定泵的下入深度及油藏在开采工程中能否形成蚯蚓洞、出砂规律和冲砂周期将会怎样等问题。在借鉴加拿大经验技术基础上,摸索出一整套技术与方法,为苏丹其他区块条件类似的油藏开发提供了借鉴。

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.