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吐哈盆地七克台组露头油气显示丰富,其中灰岩及泥岩等源岩致密油也见到多处显示,见到微缝及晶间含油,证明该区致密油成藏条件良好。勘探证实胜北凹陷致密油储存在七克台组,目前已有9口井已见油气显示,七克台组源岩油厚度大,大范围连续分布,储层脆性矿物含量高,溶蚀孔隙发育,源储一体,为典型的自身自储型油藏,且该区经受多期压扭应力场造就了大量裂缝,一定程度上为油气近源运移提供了储集空间。综合评价吐哈盆地胜北凹陷是致密油勘探的有利区块。
The Qaidai Formation in the Turpan-Hami Basin shows abundant oil and gas. Out of these, the tight oil of limestone and mudstone shows multiple occurrences. The occurrence of micro-seams and intergranular oil shows that the tight oil accumulation conditions in this area are good. Exploration proved that the tight oil in the Shengbei depression was stored in the Qiketai Formation. At present, 9 wells have been found with oil and gas. The source rocks of the Qiketai Formation are large in thickness and continuous in a wide range with high content of brittle fossils and dissolved pores , Which is a typical self-storage reservoir. In addition, due to the multi-period compressive-torsional stress field in the area, a large number of fractures are created, which provides a reservoir space for near-source migration of oil and gas. Comprehensive Evaluation The Shengbei depression in Turpan-Hami basin is a favorable area for tight oil exploration.