柴达木盆地昆北断阶带圈闭特征  

TRAP FEATURES OF THE NORTHERN KUNLUN FAULTS ZONE IN QAIDAM BASIN

作　　者：陈国民[1] 万云[1] 张培平[2] 夏敏全[1] 张道伟[2] 

机构地区：[1]重庆科技学院石油与天然气工程学院,重庆沙坪坝401331 [2]中国石油青海油田公司勘探开发研究院,甘肃敦煌763200

出　　处：《西南石油大学学报（自然科学版）》2010年第4期39-43,共5页Journal of Southwest Petroleum University(Science & Technology Edition)

摘　　要：昆北断阶带位于柴达木盆地西部南缘昆仑山前,勘探程度较低,油气成藏较为复杂。通过圈闭类型、圈闭控制因素和断裂展布研究,深入探索研究区主要勘探目标及油气聚集规律。应用构造解释与综合地质研究成果,指出昆北断阶带现阶段勘探的主要圈闭类型为构造型圈闭,以断鼻、断背斜、断块为主,其平面分布主要受断裂发育与构造变形程度等因素控制,与断裂体系有明显的依存关系且大多为断裂分割而完整性较差,沿断裂走向具有成排、成带分布的特点;圈闭主要形成于中新世与上新世,主要定型于上新世;各构造部位圈闭含油气性差异大。研究结果对昆北断阶带下一步勘探具有一定的指导意义。The north Kunlun faults zone lies in the southern edge of the western Qaidam Basin.It has a lower degree of exploration and complicated hydrocarbon accumulation.In order to make a deep probation of the major exploration targets and hydrocarbon accumulation law,the authors make a research on the types and controlling factors of traps in this area.The major types of trap are structural traps including the faulted-nose,faulted-anticline and faulted-block.The horizontal distributions are mainly subject to the development of fractures and degrees of tectonic deformation.It has an obvious dependent relation with faults system,and most of them are fault dissections which have a less completeness.They are featured by the linear and zonal distribution.What's more,most traps are formed in Miocene and Pliocene epoch and there is a big difference among tectonic positions in hydrocarbon-bearing.Thus,the conclusions will be helpful to the next hydrocarbon exploration in this area.

关 键 词：柴达木盆地 昆北断阶带 地震资料解释 圈闭类型 圈闭特征 

分 类 号：TE121[石油与天然气工程—油气勘探]