陆相压性浅水湖盆隐蔽油气藏勘探实践  

SUBTLE RESERVOIR EXPLORATION PRACTICE IN NON MARINE COMPRESSED SHALLOW BASIN

作　　者：沈武显[1,2] 樊太亮[1,2] 宫雪[3] 牛新生[4] 毛治国[5] 

机构地区：[1]中国地质大学(北京)能源学院,北京海淀100083 [2]中国地质大学(北京)海相储层演化与油气富集机理教育部重点实验室,北京海淀100083 [3]中国石化东北石油局勘探开发研究院,吉林长春130062 [4]中国地质大学(北京)地球科学与资源学院,北京海淀100083 [5]中国石油勘探开发研究院,北京海淀100083

出　　处：《西南石油大学学报（自然科学版）》2010年第2期73-78,共6页Journal of Southwest Petroleum University(Science & Technology Edition)

基　　金：国家自然科学基金项目(40472064;40672079);国家"973"项目(2005CB422103;2006CB202302)

摘　　要：应用层序地层学和沉积学原理及方法,建立了吐鲁番拗陷中下侏罗统高精度层序地层格架,共划分5个三级层序、10个四级层序;并于层序格架内分析了隐蔽油气藏成藏要素及生储盖组合特征。进一步探讨了陆相压性浅水湖盆隐蔽油气藏的发育特征与分布规律,从储层性质横向变化的机理及形成圈闭的控制因素出发,将研究区内隐蔽圈闭划分为岩性、地层和复合圈闭3大类、8亚类,对各种圈闭类型、成藏特征及其发育区域和层位进行了全面分析,研究表明,纵向上岩性和地层圈闭分别受控于层序界面和体系域,复合圈闭受构造活动期次及岩性侧向封堵的复合条件控制,而在平面展布上隐蔽圈闭具有条带状的特征;进而对隐蔽油气藏的有利勘探区进行了预测和评价。In middle and lower Jurassic of Turpan sag,high-precision sequence stratigraphic framework is built up and five third-order sequences and ten fourth-order sequences are divided by applying sequence stratigraphy and sedimentology principles and methods.In the framework,the factors of subtle reservoirs and their combination are analysised.Subtle reservoirs′ development characteristics and distribution law are explored further in the non marine compressed shallow basin.Based on reservoir lateral changes and controlling factors,the subtle traps are divided into three categories including lithologic traps,stratigraphic traps and combination traps and eight sub-categories.By completely analyzing the trap types,reservoir characteristics and their development position,reservoir distribution characteristics are concluded as follows: vertically,lithologic traps are controlled by sequence interface,stratigraphic traps by systems tracts while combination traps by tectonic activity periods and lithology lateral sealing.On the plane,reservoir distribution is striped.At last,subtle reservoir favorable areas are predicted and evaluated then exploration practice are parsed there.

关 键 词：压性浅水湖盆 层序地层 隐蔽油气藏 勘探实践 吐鲁番拗陷 

分 类 号：TE121[石油与天然气工程—油气勘探]