盐城凹陷朱家墩泰州组气藏形成机理研究

RESEARCH ON MECHANISM OF TAIZHOU FORMATION'S GAS RESERVOIR OF ZHUJIADUN IN YANCHENG DEPRESSION

分析了朱家墩泰州组天然气的成藏条件和成藏特征、成藏类型和成藏模式。通过分析认为 :泰州组气藏是古生界生成的天然气沿断层运移至泰州组聚集成藏的 ;泰州组气藏具有充足的气源和良好的盖层条件 ,但储集条件相对较差 ;泰州组气藏具有成藏晚、区域上存在良好的盖层和受控于断层等特点 ;泰州组气藏具有深盆气藏的显著特征 。

The article systematacially analyzes the conditions and characteristics of Taizhou formation's gas reservoir, discusses its type and model. Through research, we consider there are enough air source, good lap seam and poor reservoir bed. The gas reservoir of Taizhou formation forms lately and is under control by faults, and has good regional lap seam . It has conspicuous characteristics of deep basin gas trap, So we reckon that the reservoir of Taizhou formation is deep basin gas trap. The mechanism of Taizhou formation's gas reservoir is that gas generated by Mesozoic migrates to Taizhou formation along faults and accumulates.