松辽盆地南部岩性油藏特征及勘探潜力

在松辽盆地南部岩性油气藏形成条件分析的基础上,对已发现的岩性圈闭类型及分布特征进行了总结。目前松南共发现6种岩性油气藏类型:砂岩上倾尖灭岩性油气藏、砂岩透镜体岩性油气藏、构造—岩性油气藏、断层—岩性油气藏、水动力圈闭油气藏及泥岩裂缝油气藏。通过总结,认为松南岩性油气藏具备5条成藏规律,还有近10×108t的勘探潜力,下一步的勘探重点仍然是西部、西南及东南三大沉积体系的前缘地区。

Features and Exploration Potential of Lithologic Oil Reservoirs in Southern Songliao Basin

On the basis of analyzing the forming conditions of lithologic oil reservoirs in the south of Songliao Basin,the types and distributing features of lithologic oil reservoirs have been summarized. There are 6 types of lithologic oil reservoirs such as updip sandstone pinchout oil reservoir, lenticular sandstone oil reservoir,structural-lithologic oil reservoir,fault-lithologic oil reservoir, hydrodynamic trap oil reservoir and mud fractured oil reservoir. By researching and summarizing, it is thought that there would be 5 forming regularities of lithologic oil reservoirs and approximately 1 billon tons oil resources potential in the southern Songliao Basin. Meanwhile, it is put forward that next target areas should be the frontal zones of the western, westsouth and eastsouth deposition systems.