Integrated development technology of Fengfuchuan Oilfield in Shanbei

The Chang-2 Formation of Fengfuchuan Oilfield is a low permeability sandstone oilfield with an average permeability of 8.4×10-3μm2 and average porosity of 13.5%.The reservoir type is delta plain facies distributary channel sandbody,and the lithology is mainly composed of fine arcose with a compact cementation.The reservoir thickness is 12m with a buried depth of 400~600 m.The distribution of oil and water has distinct zonality. Pure water zone,oil/water transition zone and pure oil zone are distributed from bottom to top.According to the reservoir geological characteristics,integrated development technology was implemented,which achieved the effective development of this oilfield,and 30×104 t annual capacity was established by 2003 since the discovery in 2000.