文西地垒带油气藏成藏特征

Reservoir Characteristic of Wenxi Horst Zone

本文通过油气成藏条件、油气藏类型及成藏模式等几个方面对文西地垒带的油气成藏特征进行了分析和研究后得出了如下结论:文西地垒带油气藏的形成具有不同于文南其他地区的特点,由于靠近物源,储层发育变化大,因而岩性油气藏发育比较丰富。在沙二下、沙三上亚段,主要为反向屋脊断块遮挡油气藏、断层遮挡断块油气藏,在沙三中,主要是反向屋脊断块遮挡油气藏、岩性油气藏、断层-岩性复合油气藏,岩性油气藏比较发育,因而,油气藏的隐蔽性也比较强,勘探风险较大,只有加强精细的地质研究,借助储层预测等先进技术,充分利用人机联作。

Following conclusions are derived from forming condition, types and models of oil and gas reservoir in Wenxi horst zone. Because it is close material source, reservoir changes rapidly in spatial, lithology-controled reservoirs are bound, reverse- ridge fault sealed and fault sealed reservoirs are dominated in the lower part of the second segment and the upper part of the third segment of Shahejie formation. The types of reservoir are reverse- ridge fault sealed reservoirs, lithology- controled reservoirs and fault and lithology combined reservoirs, among them lithology-controled reservoirs is bound, based these, the reservoir is hard to find out,and exploration risk is very large, only elaborate geological study,reservoir prediction performed by man and computer combined technic, exploration risk can be eliminated.