西部挤压盆地地质剖面热演化与油气运聚演化模拟——以准噶尔盆地为例  

The Thermal Evolution of Geological Profile and Evolution Simulation of Hydrocarbon Accumulation in the West Extrusion Basin——By Taking Juggar Basin for Example

作　　者：赵乐强 谭沛森 郭瑞超 马骥 宫亚军 Zhao Leqiang

机构地区：[1]中石化胜利油田分公司勘探开发研究院,山东东营257000 [2]中国海洋大学海洋与大气学院,山东青岛266000

出　　处：《长江大学学报（自然科学版）》2018年第7期1-8,89,共9页Journal of Yangtze University(Natural Science Edition)

基　　金：国家科技重大专项(2016ZX05002-002)

摘　　要：为明确准噶尔盆地油气运聚演化特征,以准噶尔盆地南北向挤压大剖面为研究对象,基于PetroMod软件先进的"Block"功能,采用附集法对剖面进行了烃源岩成熟度与油气运聚模拟,在剖面上充分考虑了快速沉积、异常超压、挤压逆冲及剥蚀作用等对烃源岩热演化历史的影响。结果表明,准噶尔盆地二叠系烃源岩在侏罗纪进入成熟阶段,现今热演化程度处于高成熟-过成熟阶段,侏罗系烃源岩在古近纪至第四纪进入成熟阶段;盆地的昌吉凹陷及玛湖凹陷等地区发育侏罗系和下二叠统为中心的两套超压系统;并揭示了准噶尔盆地油气自早侏罗世开始运移,至白垩纪达到高效运移阶段,主要聚集在构造高点及断裂带附近。该认识对准噶尔盆地成藏过程具有重要意义。In order to clarity the oil and gas migration and accumulation evolution characteristics of Junggar Basin,the large compression profile of S-N in Junggar Basin was taken as the object of study,Based on the advanced Block function of PetroMod software,the maturity of hydrocarbon source rock and hydrocarbon migration and accumulation were simulated by the method of appended set.In the section the effects of overlapping action,overpressure,rapid deposition or denudation on the history of hydrocarbon rocks were fully considered.The results show that the Permian hydrocarbon source rocks in Junggar Basin enters into the mature stage of hydrocarbon generation and now is at the mature stage,Jurassic source rocks are entered in maturity stage from Paleogene to Quaternary,in the areas of Changji Depression and Mahu Depression,2 sets of overpressure systems are developed based on Jurassic and Lower Permian,which indicates that oil and gas start migration from early Jurassic,to the Cretaceous period,the high efficient migration stage is started,oil and gas are accumulated on the Tectonic high point and near fault zone,this understanding is of great significance in the process of reservoir formation in Junggar Basin.

关 键 词：挤压地质剖面 盆地模拟 热演化 油气运聚 准噶尔盆地 

分 类 号：TE122.3[石油与天然气工程—油气勘探]