Abstract:

The Changyangdian buried hill which was discovered in the mid-1970s and put into an early-stage exploration attained no progress due to an incorrect understanding of oil-gas reservoir geology of Wumishan formation. The successful Chang-3 drilling in 2006 is a milestone to the buried hill exploration. This paper, based on a high yield of Chang-3 Well, compares systematically the sequences, studies the sequence distribution and the structure in the buried hill, reestablishes an oil-gas reservoir model as Chang-3 buried hill, and reaches a correct understanding of the Wumishang formation oil-gas reservoir geology. 

Key words:

Changyangdian buried hill structural belt; buried hill oilgas reservoir; reservoir formation rules; geological cognition

摘要：

长洋淀潜山构造带于70年代中期发现并投入早期勘探，期间由于对雾迷山组油藏认识不清楚，使勘探开发工作停滞。2006年长3井的钻探成功，打破了多年来古潜山勘探开发的沉寂局面。在长3井喜获高产油流的基础上，通过加强潜山地层区带统层对比分析工作，落实潜山地层分布特征,深化区带地质构造特征研究，精细刻画断块构造断裂格局，重建长3潜山油藏成藏模式，进行雾迷山组油气成藏规律再认识，从而实现长洋淀潜山油藏的整体评价建产的目的。

关键词: 长洋淀潜山构造带；潜山油藏；油气成藏规律；地质认识