二连盆地吉尔嘎朗图凹陷岩性油藏勘探

近几年来二连盆地岩性油藏勘探在不同类型凹陷中连续获得重大突破,吉尔嘎朗图凹陷是老油区下洼开展岩性油藏勘探成功的典范。文中简要介绍了该凹陷岩性油藏勘探、研究思路和突破历程。在层序地层学、坡折带发育特征研究基础上,总结了形成岩性油藏的圈闭类型和油气富集特征。采用JASON、ISIS等储层反演软件精细预测、落实各种类型的圈闭,通过勘探实践发现了一个优质储量区块,进一步明确了该凹陷今后的勘探方向。

Exploration of Lithologic Oil Reservoirs in Jiergalangtu Depression of Erlian Basin

Important breakthroughs in exploration of lithologic oil reservoirs have been made in the different depressions of Erlian Basin. Jiergalangtu Depression is a typical example for successful exploration of lithologic oil reservoirs in old oil area. This article briefs about the study conception and breakthrough process of lithologic oil reservoir exploration in this depression. Based on the sequence stratigraphy and development of slope-folding belts, the characteristics are summarized concerning the traps of lithologic oil reservoirs and oil and gas abundance. JASON and ISIS reservoir inversion software is adopted for precise prediction and location of various traps. The exploration practice leads to discovery of a high-quality reservoir block, further clarifying the direction for exploration of this depression at the next stage.