中国石油大学学报（自然科学版）2017，Vol.41Issue(6)：88-93,6.DOI:10.3969/j.issn.1673-5005.2017.06.010
伊朗雅达油田沥青层置换机制与压力波动分析
Asphalt displacement mechanism and pore pressure fluctuation in Yadavaran Oilfield, Iran
摘要
Abstract
It has observed that the pore pressure of the Kazhdumi asphalt formation fluctuates greatly in Yadavaran Oilfield of Iran, and asphalt spillage increases instead of decreasing when the density of drilling fluid goes up. To explain this abnormal phenomenon , a concept of extensive wellbore formed by displacement bidirectional flow between the fluids in the enclosed ge-ological space and wellbore was presented. A mechanism model of bidirectional displacement flow between asphalt in forma-tion and drilling fluid in wellbore was figured out. Laboratory simulation experiments show that, as the density difference be-tween drilling fluid and asphalt increases, the asphalt displacement rate increases proportionally. The results indicate that bi-directional displacement flow in enclosed geological fluid space is the essential cause of the pore pressure fluctuation in the asphalt formation.关键词
沥青层/置换/双向流动/泛井筒空间/地层孔隙压力波动Key words
asphalt formation/displacement/bidirectional flow/extensive wellbore space/formation pressure fluctuation分类
能源科技引用本文复制引用
路保平,侯绪田,邢树宾..伊朗雅达油田沥青层置换机制与压力波动分析[J].中国石油大学学报（自然科学版）,2017,41(6):88-93,6.基金项目
"十三五"国家科技重大专项(2016ZX05033-004) （2016ZX05033-004）
中石化科技部项目(P16014) （P16014）
