松辽盆地外围东南部中生代残留盆地相互关系及油气勘探前景

松辽盆地外围东南部中生代残留盆地群，近年发现了良好的油气显示，实现了工业油气流井突破.但盆地之间相互关系及其成藏特征研究薄弱，制约了该区油气勘探工程的部署和资源前景预测.为此，在油气勘探工程调查的基础上，通过系统的野外地质调研和测试分析，综合研究得出：松辽盆地外围东南部中生代残留盆地皆为独立的断陷盆地，其内下白垩统的下桦皮甸子组和亨通山组发育中等-好的烃源岩，并形成了良好的自生自储、下生上储和上生下储型生储盖组合，具有一定的油气勘探前景；其隐蔽的岩性油气藏和刺穿构造油气藏是有利的油气勘探方向.

INTERRELATION BETWEEN MESOZOIC RESIDUAL BASINS IN THE SOUTHEASTERN PERIPHERY OF SONGLIAO BASIN AND OIL-GAS EXPLORATION PROSPECT

In recent years, good oil-gas indications have been found in the Mesozoic residual basins in the southeastern periphery of Songliao Basin, making a breakthrough in industrial oil-gas flow wells. However, the weak research on interrelation between basins and hydrocarbon accumulation characteristics restricts the deployment of oil-gas exploration engineering and prediction of resources prospect. Therefore, based on the oil-gas exploration engineering survey, through systematic field geological survey and test analysis, it is concluded that the Mesozoic residual basins are all independent fault basins, with medium-good source rocks developed in the Lower Cretaceous Xiahuapidianzi Formation and Hengtongshan Formation, forming good source-reservoir-cap assemblages of self generation-self storage, lower generation-upper storage, and upper generation-ower storage, with a certain oil-gas exploration prospect. The subtle lithologic oil-gas reservoir and diapiric-structure reservoir are favorable exploration direction.