摘要
以具有典型特低渗透油层特点的西峰油田长6储层为研究对象,分析了储层的物性特征、储层敏感性矿物、地层水性质,进行了室内速敏、水敏、酸敏、碱敏、盐敏等敏感性评价实验,认识了钻井完井液对特低渗透储层的伤害机理和伤害程度,确定了钻井完井液施工参数,并以此为基础研制出一种新型的低固相强抑制低伤害完井液配方。使用低固相强抑制低伤害完井液后用无水煤油驱排,平均静态伤害率为9.6%,均属于轻度伤害。在庄平3井的现场应用表明,该完井液体系适应西峰油田的地质特点,对储层的损害率小于30%。该体系满足了水平井钻井的施工需要,施工作业井下安全,不阻不卡,达到了储层保护要求。
Chang 6 reservoir in Xifeng oilfield is characterized by low formation permeability. The physical property, formation sensitivity and formation water were analyzed. Laboratory study was done on flow-sensitivity, water-sensitivity, acid-sensitivity, base-sensitivity and salt-sensitivity, the formation damage mechanism and degree were understood, and the operation parameters of drilling fluid and completion fluid were determined. Based on the study, a new low solids content completion fluid was with strong in...
出处
《钻井液与完井液》
CAS
北大核心
2006年第5期47-49,86-87,共5页
Drilling Fluid & Completion Fluid
基金
中国石油股份有限公司2005重点科研项目:0.3毫达西特低渗透储层开发技术攻关研究。
关键词
完井液
特低渗透
储层保护
敏感性评价
低伤害
强抑制
completion fluids
ultra-low permeability
reservoir protection
sensitivity evaluation
low damaging
strong inhibition
