中文摘要：

利用高分辨率层序地层学原理建立松辽盆地古龙凹陷青山口组地层格架,结合岩心、测井、录井和地震反演等对古龙凹陷青一段沉积特征进行研究。研究结果表明：古龙凹陷青山口组地层划分为3个中期旋回和6个短期旋回,其中青一段地层对应1个中期下降半旋回（MSC1）和2个短期旋回（SSC1和SSC2）;青一段地层主要发育湖泊三角洲、湖底扇和湖泊等沉积体系,凹陷西侧湖泊三角洲体系范围和规模比凹陷东侧湖泊三角洲体系的大,短期旋回SSC1中湖泊三角洲体系的范围要比SSC2的略大,而湖底扇体系的规模则要比SSC2的略小;在凹陷中心湖底扇沉积区域有利于形成砂岩透镜体油藏,在凹陷两侧三角洲前缘发育区域主要寻找断层-岩性油藏。

英文摘要：

Based on the principle of high resolution sequence stratigraphy, the formation framework of the Qingshankou group in Gulong Depression in Songliao Basin was established. Combined with the core, well logging, logging and seismic inversion, sedimentary characteristics of K1qn1 in Gulong Depression were researched. The results show that the Qingshankou formation in Gulong Depression is divided into three medium term cycles and six short term cycles, of which K1qn1 occupies one medium falling semi-cycle（MSC1） and two short term cycles（SSCl and SSC2）. The predominant sedimentary systems of K1qn1 in Gulong Depression are lake delta, sublacustrine fan and lake. The scope and scale of lake delta system in the west side of Gulong Depression is bigger than those of the east. The scope of the lake delta system in SSC 1 is bigger than that of SSC2, while the scale of sublacustrine fan of SSC 1 is smaller than that of SSC2. Sublacustrine fan area is propitious to form sandstone lens reservoirs in the centre of the depression. Delta front is a good area to find fault-lithological reservoirs on both sides of Gulong Depression.