马朗凹陷侏罗系层序格架下的成藏组合研究

The Reservoiring Combination of the Jurassic Se-quence Stratigraphic framework in Malang sag

马朗凹陷位于三塘湖盆地中部。以高分辨率层序地层学原理为指导，利用测井、钻井和野外剖面等资料进行分析研究。对三塘湖盆地马朗凹陷侏罗系不同级次基准面旋回进行了详细划分，建立了该区侏罗系高分辨率层序地层格架。将研究区侏罗系划分为3个长期、6个中期、18个短期基准面旋回。本区短期基准面旋回分两大类三种结构类型；中、长期基准面旋回以对称型结构为主，区域分布稳定；长期基准面旋回控制着研究区沉积相的展布、演化，同时还影响了生、储、盖组合的配置。

The Malang sag lies in the middle of Santanghu basin. In order to divide the base-level cycles of different orders in detail and build the framework of the high resolution sequence of Jurassic in the Malang sag of Santanghu basin. Taking the high resolution sequence stratigraphic theory as a direction,multiple analysis methods were adopted, including core, log well and outcrop profile, etc. The Jurassic of study area can be divided 3 long,6 middle and 18 shaort base-level cycles. The short base-level may be divided two types of cycles that consist of six subtypes;The middle and long base-level cycles are usually of symmetric structures;The long base-level controls the distribution and evolution of sediment facies, and also has a significant influence on the source-reservoir-cap rock assemblage.