赵凹油田泌304区低渗透油藏开发探索与实践  

Development practice and exploration of low permeability reservoir in Bi 304 block of Zhaoao oilfield

作　　者：李会娟[1] 王琪[1] 黄兰[2] 李讴[1] 张燕[1] 

机构地区：[1]中国石化河南油田分公司石油勘探开发研究院,河南南阳473132 [2]中国石化东北油气分公司勘探开发研究院

出　　处：《石油地质与工程》2012年第4期79-81,84,共4页Petroleum Geology and Engineering

摘　　要：赵凹油田泌304区是一个低孔低渗断鼻构造油藏,平均孔隙度为13.6%,平均渗透率为22.5×10-3μm2,主要含油层系是核桃园组核一段和核二段。泌304区于2007年投入开发,在开发上具有油井投产初期产能差异大、注水井吸水能力差等特点。经过近几年的开发探索,总结出对于低渗透裂缝油藏,调整井排方向与裂缝发育方向一致、完善井网、压裂油层改造等开发技术可以有效改善开发效果,提高储量动用程度。该区目前平均单井日产油量4.4t,综合含水72.43%,采出程度2.12%,采油速度0.68%。Zhaowa oilfield is a low porosity and low permeability faulted nose reservoir, average porosity is 13.6%, the average permeability is 22.5 ×103μm2, main oil-bearing layer is the Hetaoyuan formation I and II section. Bi 304 block was brought into development in 2007, initial oil well production capacity difference is big, water injection well water absorption capacity is bad. After recent years of development and exploration, developing technology for low permeability fractured reservoir as adjusting well pattern matched to fracture direction, perfect well pattern and fracturing reservoir transformation is summarized , which can effectively improve the development effect, and improve the producing degree of reserves. Currently the district average oil production of single well is 4.4 t, composite water cut is 72.43%, the producing degree is 2.12% and the recovery rate is 0.68%.

关 键 词：泌304区 低孔低渗 断鼻构造油藏 完善井网 压裂油层改造 开发效果 

分 类 号：TE348[石油与天然气工程—油气田开发工程]