中拐凸起三叠系层序地层与岩性油气藏勘探方向  

The Triassic Sequence Stratigraphy and Lithologic Reservoir Exploration Targets in Zhongguai Swell

作　　者：石新朴[1] 李臣[1] 单江[1] 廖伟[1] 胡清雄[1] 侯向阳[1] 游利萍[2] 陈方鸿 

机构地区：[1]中国石油新疆油田分公司采气一厂 [2]中国石油新疆油田分公司勘探开发研究院,新疆克拉玛依834000 [3]北京中油石油技术有限公司,北京100083

出　　处：《新疆石油地质》2012年第4期413-416,共4页Xinjiang Petroleum Geology

摘　　要：根据岩心、测井和地震资料,对准噶尔盆地西北缘中拐地区三叠系进行了层序地层划分,划分为4个三级层序和7个体系域,同时建立了以四级层序为地层单元的高精度层序地层格架。分析了层序格架内沉积体系的时空配置关系,揭示了探区主要油气藏分布规律。研究认为,三级层序边界和四级层序的水进界面是控制该区岩性圈闭形成的重要因素,岩性圈闭主要分布在四级层序上倾尖灭线附近以及中拐凸起斜坡区297井—克021井一带。Based on drill cores,well logs and seismic data,the Triassic in Zhongguai area in northwestern margin of Junggar basin was classified in sequence stratigraphy as four Class-3 sequences and seven system tracts,and high-resolution sequence stratigraphic framework was-established by-Class-4-sequence-as basic stratigraphic unit.This framework includes the analysis of the space-time configuration of the depositional system and the revealing of the-distribution rules of hydrocarbon reservoirs in exploratory areas.The study shows that the boundaries of the Class-3 sequence and Class-4-sequence are significant factors for controlling formations of lithologic traps in this area.The lithologic traps-are mainly distributed near-the-Class-4-sequence pinch out-and the surroundings of Well 297-Well Ke-021 in the slope of Zhongguai swell.

关 键 词：准噶尔盆地 中拐凸起 三叠系 沉积体系 层序 岩性圈闭 

分 类 号：TE111.3[石油与天然气工程—油气勘探]