盐定地区侏罗系油藏成藏机理研究及勘探潜力分析

盐定地区有着丰富的油气资源,早期曾在侏罗系探明石油地质储量约5000×10~4t,先后发现马家滩、李庄子、大水坑、红井子、摆宴井、马坊、油房庄等小油田。所发现油藏成藏条件复杂,含油层系多,在侏罗系延安组、直罗组及三叠系延长组各小层均有发现,这些油田经过30多年的开发,可采储量采出程度较高,达到80.0%以上,已经进入中、高含水的开发后期,稳产的物质基础十分薄弱,稳产形势严峻。同时该区的三叠系油藏是长庆油田近期发现的增储的亮点,结合近年新钻的三叠系探井,对已开发的侏罗系老油田进行油层复查,进行成藏机理研究和勘探潜力分析,挖掘油藏产能。

Jurassic of Yanchi-Dingbian region reservoirforming mechanism and exploration potential

Yanchi - Dingbian region is rich in oil and gas resources, early Jurassic had proven oil reserves of about 5 000× 104t, has found that Ma Tan, Li Zhuang Zi, Tai Shui Hang, Red Well son, Bai Yan wells, Mafang, youfangtai Zhuang and other small oil fields. Conditions found in the reservoir forming complex, multi-layer system oil in the Jurassic Yan＇an, Zhiluo and a small layer of Yanchang have found that these fields after 30 years of development, can be taken out of reserves higher degree, to 80.0 %, has entered in the latter part of the development of high water, stable material base was very weak, stable situation is grim. While the area near the Triassic reservoir is found in Changqing oilfield increase re- serves highlights, combined with recent new Triassic exploration well drilled on the Jurassic has been developed for oil and old oil field review, the mechanism of accumulation and exploration potential, tap the reservoir capacity.