高分辨率层序地层学理论在准噶尔盆地勘探中的应用
- 收稿日期:
1900-01-01
- 修回日期:
1900-01-01
- 刊出日期:
2008-04-10
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。
Application of the Theory of HighResolution Sequence
- China Unisitity of Petroleum, Beijing 102249
- Received Date:
1900-01-01
- Rev Recd Date:
1900-01-01
- Publish Date:
2008-04-10
Abstract: By means of highresolution sequence stratigraphy study on Permian Wutonggou Formation reservoir in Jimsar Sag of Junggar Basin,we identified three parasequence types corresponding to three shortperiod base level cycle modes: base level rising parasequence, base level fallng parasequence, base level rising and falling half cycle composite parasequence. And two middleperiod base level cycles are discriminated. The formation of middle baselevel falling cycle is made up of mutliprograding shortperiod cycles whereas middle baselevel rising cycle stacking mode presents retrograding structures. The Permian Wu Tong Gou Formation can be classified 5 parasequence sets(corresponding to 5 middleperiod base level cycles) in this area,which is S1,S2,S3,S4,S5from bottom to top. S1,S2are formed during rising stage of baselevel while S3,S4,S5 formed during falling 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 highresolution sequence stratigraphy and the prospecting targets are offered.
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