摘要
沾化凹陷泥岩裂缝油气藏具有以下特征 :(1)储层为暗色、厚层富含有机质的生油岩 ;(2 )泥岩油气显示段具有高压异常 ;(3)主要分布于深凹陷区缓斜坡上 ,泥质岩油气显示段主要集中在断层带附近。泥岩裂缝性储集层的形成主要与异常高孔隙流体压力、局部构造变形及断裂作用有关 ,被非裂缝性泥岩所封闭形成自生自储的泥岩裂缝油气藏。
The fractured mudstone reservoir in Zhanhua depression, Shengli Oil Field has following characteristics: (1) The fractured mudstone reservoirs are dark, thick source rocks with rich carbonate and organic matter; (2) The fractured mudstone reservoirs have abnomally high pore fluid pressure; (3) The reservoirs occur on the gently dipping slope of deeper depression and always near the fault zone. The formation of fractured mudstone reservoir is related with abnomally high pore fluid pressure, structure stress and diagenesis. When overpressured mudstone microfracture was enlarged by faults or other structural factors, oil and gas mixed with water can inflow to fractured mudestone reservoirs by pressure difference along the mudstone formation, then oil and gas accummulate in fractures.
出处
《矿物岩石》
CAS
CSCD
北大核心
2003年第1期74-76,共3页
Mineralogy and Petrology
基金
胜利石油管理局重点科研项目 (编号 KBY3 2 0 0 0 0 82 )
"油气藏地质及开发工程"国家重点实验室开放研究基金 (编号 PLC9912)
