松辽盆地火山岩储层三维可视化描述

以松辽盆地升平地区作为目标区，优选出Petrel软件。首先利用构造层面及断层数据建立了构造模型和断层模型，然后通过确定性建模和随机建模结合的方法，同时结合断层和构造模型建立了该区火山岩相三维地质模型，在三维空间上详细刻画了典型火山岩体的岩相特征和在三度空间的变化规律，实现了对营城组升平地区复杂构造目标区火山岩储层的三维可视化动态表述和展示。通过三维构造模型可以看出，工区西北部及南部缺失营城组地层，其内部发育由两个构造高点所构成的穹窿构造，该构造以-2 810 m等深线圈闭，构造面积32.45 km²，构造高点海拔为-2 660.5 m，构造幅度150.5 m，断层多为南北向展布，长度一般为2～5 km，断距一般为8～30 m。

3D Visualization Description of the Volcanic Rock Reservoir in the Songliao Basin

3D modeling has been a key problem in the study of the volcanic rock reservoir in the northern part of the Songliao Basin.Take the Shengping area of the Songliao Basin as a target area,and select Petrel software and use data of tectonic interfaces and faults,the authors firstly establish the structure and the fault model of the area;secondly,by combination of certainty modeling and stochastic modeling methods,and by unite of both structural and fault models,the authors depict typical volcanic-rock characteristics and the changing law of lithofacies in three-dimensional space in detail to carry out the dynamic expression and display of volcanic reservoirs of the complex tectonics target zone by 3D visualization.The three dimensional structural model reveals that the northwest and the south of the study area are lack of the strata of the Yingcheng Formation and there is a dome structure with two structural highs in the area.The dome is closed at-2 810 m isopach,with an area of 32.45 km2.The structural high is at-2 660.5 m level,and is of an amplitude of 150.5 m.Most of faults are oriented in N-S direction and are 2-5 km long,with a displacing distance of 8-30 m.