歧口凹陷歧北斜坡地层岩性油气藏精细勘探与发现

歧北斜坡是渤海湾盆地歧口凹陷西南缘的大型挠曲缓坡,由于该斜坡构造圈闭不发育,按照构造找油思路在该斜坡区勘探成效甚微.以地层岩性油气藏勘探理论为指导,开展斜坡控砂机理和油气成藏内在规律研究,确定勘探潜力目标区.针对目标区开展分砂组精细地层对比、内幕层精细构造解释、砂体精细刻画、精细油藏分析、滚动优化部署与实施等研究,发现了亿吨级的优质储量区,地层岩性油气藏勘探取得重要发现,实现了老区精细勘探新突破.

Fine exploration of lithologic hydrocarbon reservoirs in Qibei slope and discovery

Qibei slope is a large flexure and gentle slope at the southwest boundary of the Qikou sag in Bohai Bay basin.Structural traps are under-developed in the slope area,so the exploration has achieved little success according to the concept of finding oil based on structure.In the paper,the theory of exploration based on formation lithology was used and the mechanism of sands controlled by slopes and the inherent rule of hydrocarbon accumulation were studied and the potential target exploration areas were deter...