海拉尔盆地贝尔凹陷中部隆起带控藏因素及成藏模式

Control factors and accumulation modes of central uplift belt in Beier Sag, Hailar Basin

崔鑫 姜洪福 王运增 杨少英 齐林海3

核工业北京地质研究院遥感信息与图像分析技术国家级重点实验室，北京 100029 北京大学地球与空间科学学院，北京 100871 中国石油大庆油田有限责任公司海拉尔石油勘探开发指挥部，黑龙江 大庆 163453

National Key Laboratory of Remote Sensing Information and Image Analysis Technique, Beijing Research Institute of Uranium Geology, CNNC, Beijing 100029, China School of Earth and Space Sciences, Peking University, Beijing 100871, China Hailar Exploration and Development Administration, Daqing Oilfield Company Ltd., PetroChina, Daqing 163453, China

利用源岩分析、储层反演和断层组合刻画技术，系统分析了海拉尔盆地贝尔凹陷中部断陷带的油气控藏特征和成藏模式。研究表明:贝尔凹陷中部隆起带周缘发育3个生烃洼槽，主要生烃层位为南屯组，贝西次洼是主要供烃洼陷。中部隆起带及邻区兴安岭组砂体整体呈现东厚西薄的特点，主要为扇三角洲和辫状河三角洲前缘河道砂体储层。研究区主要存在“侧向长距离式”、“阶梯式”和“源￣储对接式”3种油气运移成藏模式。

Based on the source rock characteristics, reservoir inversion and fault combination description, the controlling factors and hydrocarbon accumulation modes of Beier Sag, Hailar Basin, have been studied. The results show that there are three hydrocarbon generation sub-sags developed in Beier Sag and the major hydrocarbon-generating formation is Nantun Formation in the Beixi sub-sag. The distribution character of sandbody of Xing′anling Formation in the central uplift and its neighbor is thicker in the east than in the west. The favorable facies of sand body distribution including fan-delta front facies and braided river delta front facies. In our study, three types of hydrocarbon accumulation modes have been identified, including the "long distance" migration type, "vertical and lateral" migration type, and" source-reservoir contact" migration type.

10.6056/dkyqt201805002