任北奥陶系岩溶发育规律及对油田开发的影响

Research on Karst Feature of Ordovician Carbonate Oil Pool in Northern Renqiu Oil Field

综合大量的钻探、物探、室内实验和油田开发等资料 ,研究了任北奥陶系油藏的岩溶发育规律及其对油藏赋存、油田开发的影响 .结果表明 ,任北奥陶系具有风化壳、顺层、断层、水平岩溶发育带 ,非均质性显著 ,受此影响 ,油藏的赋存亦具明显的非均质性 .

The karst feature of Ordovician carbonate oil pool in northern Renqiu oilfield and its impaction on occurrence and development of the reservoir were studied by analyzing the data obtained from borehole,geophysica1 prospecting,simulated test, and oil development. The result shows that there are several intensive karst zones which include weathering crust,bedding zone, along bed fault zone, and horizotal zone in Ordovician carbonate rock of Renqiu paleo hills. The anisotropy is very obvious, and so is the occurrence of the reservoir.