摘要
以断层相关褶皱理论、构造几何学、构造运动学为指导,在分析构造样式、滑脱层系的基础上,结合地表、钻井资料建立了构造模型,进行构造精细解释,分析了构造的三维展布特征。认为:工区受力环境符合推土机模型,为递进挤压渐弱模式,构造以逆冲推覆为主;剖面上,中、下三叠统地层增厚现象是断层导致地层重复引起的,特别是三叠系嘉陵江组膏岩层是区域滑脱层,深部断层、浅部断层及其内部断层都使其地层重复增厚;以嘉四段、志留系为界,构造在纵向上可以分为上、中、下三层。
Guided by the theory of fault-related fold,tectonic geometry along with tectonic kinematics,the tectonic models are established from surface and drilling data,the fine tectonic interpretation is implemented and the tectonic 3D distribution is analyzed based on the analysis of tectonic style and decollement layers.It is considered that the forcing condition in studied area is suitable for a bulldozer model,which belongs to progressive-squeezing weaken patterns.And structures in the area are dominated by overthrust.Repetitive formations caused by fault lead to upper,middle and lower stratum thickening.Especially gypsolyte layers in Triassic Jialingjiang Formation are regional decollement zone,which are thicken by deep,shallow and interior faults.Longtitudinally,the structure is classified into upper,middle and lower layers bound by Jilingjiang Formation reservoir.
出处
《天然气勘探与开发》
2007年第1期16-19,共4页
Natural Gas Exploration and Development
