中文摘要：

中国北方裂谷型侏罗系在甘肃、内蒙古至东北区的广大地带皆未获油气突破，可视为该层系油气勘探的新区。改革开放前多轮勘探未获油气突破，与当时的技术水平低和认识的局限性有很大关系。近年，在柴达木盆地北缘、松辽盆地西南侧油气勘探的一系列新进展，坚定了在提高技术体系的同时重新评价其含油气性、进行新层系开拓的信心。作为侏罗纪古裂谷，该套地层纵横向发育有明显的共性，其煤系地层经历了复杂的后期改造，使其在残留地层的圈定、原型盆地的恢复、烃类演化运移及保存特点的认识上难度相当大。在此项工作中，应重视对煤系生烃和火山岩的研究，注意对区内不同目的层常规、非常规不同类型油气和沉积型铀矿的综合勘探。

英文摘要：

No breakthrough has been achieved in rift type Jurassic petroleum exploration in Gansu, Inner Mongolia and northeastChina, and hence these areas can be regarded as new areas for petroleum exploration. There existed obvious relationship between theunsuccessful exploration and the low level of technology and the limitation of cognition before the reform and opening up. In recentyears, a series of new advances achieved on the northern side of Qaidam basin and the southwestern side of the Songliao basin havestrengthened researchers＇ confidence in reevaluating the oil and gas potential and exploiting new formations in these areas. As the de-velopment of Jurassic rift in the Jurassic strata has obvious similarity, and the coal measure strata have experienced complex transforma-tion, there exist considerable difficulties in the recovery and delineation of the residual strata and the prototype basin as well as the un-derstanding of the hydrocarbon transport and preservation characteristics. In the further work, much importance should be attached tothe study of hydrocarbon generation and volcanic rocks of coal-beariang strata as well as the integrated exploration of different targetstrata, conventional and unconventional oil and gas and sedimentary uranium deposits in these areas.