松辽盆地南部查干花南次凹断陷期层序格架与沉积充填特征

Sequence Stratigraphic Framework and Sedimentary Filling Characteristics of Chaganhua Southern Sub-sag of South Songliao Basin in the Faulted Period

栾颖

LUAN Ying

中国石油化工股份有限公司东北油气分公司, 吉林长春 130062

Northeast Oil and Gas Branch, SINOPEC, Changchun, Jilin 130062, China

运用钻井沉积旋回与地震反射结构相结合的方法，利用岩心、测井、录井资料，达到明确查干花南次凹层序格架及沉积充填的目的。沙河子-营城组地层中共有3个三级层序与6个层序界面，层序格架内部发育3种沉积相、6种沉积亚相和10种沉积微相类型，层序发育与沉积体系演化相对完整。受控盆断裂活动减弱影响，SQ1主要为近岸水下扇，SQ2逐渐变为以扇三角洲沉积为主，而SQ3湖盆范围增大、扇三角洲宽缓展布。在以上研究的基础上，部署实施了双10井，获得了良好油气显示，由此发现了查干花南次凹沙河子组新的含油气层系，对长岭段陷南部沙河子组新层系勘探具有指导意义。

Using the combination of drilling sedimentary cycle and seismic reflection structure, the core, logging, and logging data have been used to clarify the purpose of the sequence stratigraphic framework and sedimentary filling of Chaganhua southern subsag.There are three third-order sequences and six sequence interfaces in the stratum of Shahezi-Yingcheng formation.Three types of sedimentary facies, six sedimentary subfacies and ten types of sedimentary microfacies are developed in the sequence framework.The sequence development and evolution of the sedimentary system are relatively complete.It has been affected by the weakening activity of basin-controlling faults. SQ1 is mainly inshore subaqueous fans, and the fan delta deposition has gradually developed in SQ2. While the fan delta spreads broadly, with the lacustrine range expanding in SQ3. Based on the above study, the Shuang-10 well has been deployed and implemented, with a good oil and gas display.In Chaganhua southern sub-sag, the new hydrocarbon-bearing strata of the Shahezi formation also has been discovered, which is instructive for the exploration of the new strata of the Shahezi formation in the southern part of Changling depression.

中国石化科技攻关项目"长岭地区断陷结构与充填特征研究"（P14020）。

https://doi.org/10.3969/j.issn.1008-2336.2018.04.017