高分辨率层序地层学理论在准噶尔盆地勘探中的应用  

Application of the Theory of High-Resolution Sequence Stratigraphy to Junggar Basin

作　　者：刘春慧[1] 金振奎[1] 张鑫[2] 王铮[3] 朱桂芳[4] 伍虹霖[4] 

机构地区：[1]中国石油大学,北京102249 [2]新疆油田公司勘探处,新疆克拉玛依834000 [3]新疆石油管理局井下作业公司研究所,新疆克拉玛依834000 [4]新疆油田公司勘探开发研究院,新疆克拉玛依834000

出　　处：《沉积学报》2008年第2期249-256,共8页Acta Sedimentologica Sinica

摘　　要：在准噶尔盆地吉木萨尔凹陷东斜坡开展高分辨率层序地层学研究,识别出三种准层序类型,对应三种短期基准面旋回:基准面上升型、基准面下降型、基准面下降半旋回和上升半旋回两部分构成的复合型准层序。两种中期基准面旋回:中期基准面下降旋回,由多个进积式的短期旋回组成;中期基准面上升旋回,地层堆叠样式则呈退积结构。研究区梧桐沟组可划分为5个准层序组(中期基准面旋回),自下而上依次为S1、S2、S3、S4、S5,基准面上升期形成S1、S2,基准面下降期形成S3、S4、S5。吉7井和吉17井梧桐沟组出油砂层属于不同的准层序组,成因不同,因而不是同一砂组。By means of high-resolution sequence stratigraphy Jimsar Sag of Junggar Basin,we identified three parasequence y study on Permian Wutonggou Formation reservoir in types corresponding to three short-period base level cycle modes： base level rising parasequence, base level failng parasequence, base level rising and failing half cycle composite parasequence. And two middle-period base level cycles are discriminated. The formation of middle baselevel falling cycle is made up of mutli-prograding short-period cycles whereas middle base-level rising cycle stacking mode presents retrograding structures. The Permian Wu Tong Gou Formation can be classified 5 parasequence sets （ corresponding to 5 middle-period base level cycles） in this area,which is S1、S2、S3、S4、S5,from bottom to top. S1 ,S2 are formed during rising stage of base-level while $3, $4, $5 formed during failing stage. According to the research conclusions we reckon the two petroliferous sand beds of Well Ji 7 and Well Ji 17 are not pertained to a same sand set as its forming reason is different. So we have resolved the practical question. One stratigraphic trap and five lithologic traps are recognized by the theory of high-resolution sequence stratigraphy and the prospecting targets are offered.

关 键 词：吉木萨尔凹陷 高分辨率层序地层学 基准面旋回 地层对比 圈闭识别 

分 类 号：P539.2[天文地球—古生物学与地层学]