塔里木盆地塔中隆起和塔中北坡走滑构造差异变形机理与油气聚集

The diversiform and differential strike-slip structural styles of the central Tarim uplift and its northern slope are to be determined through seismic profile interpretation, field observation and comparison, and comprehensive analysis of the attribute extraction from 3-D seismic data. The geological models of the zonation and multilevel differential deformation of the central Tarim uplift and its northern slope are to be established. And the differential distribution patterns of the strike-slip structures are to be set up. The differential deformation phases of the strike-slip structures are to be determined through analysis of the strike-slip fault displacement vector, testing the petrophysics and lithomechanics, numerical simulation of stress field, and physical modeling. The splice growth patterns and processes from deep to shallow level of the strike-slip fault are to be revealed. The differential evolution and deformation mechanisms of the strike-slip tectonics are to be determined. And the geodynamic models of the strike-slip tectonics in the central Tarim uplift and its northern slope are to be established. The processes and controlling factors of hydrocarbon accumulation in the central Tarim uplift and its northern slope are to be determined through analyzing the trap styles, fractured and karst reservoirs, oil-gas migration and accumulation related to strike-slip structures. Controlling mechanisms and models of the differential hydrocarbon accumulation and preservation associated to the differential strike-slip tectonic deformation in the central Tarim uplift and its northern slope are to be established. It is helpful to understand the mechanisms of the differential strike-slip deformation and effect on the hydrocarbon accumulation in the intra-cratonic paleo-uplifts and slopes.

通过对走滑构造地震剖面解释、野外地质调查和对比、三维地震资料属性提取分析，确定塔中隆起和塔中北坡走滑构造变形样式的多样性和差异性，建立走滑构造平面分区和纵向分层差异变形地质模型，揭示塔中隆起及其北坡走滑构造分布规律和差异展布模式。通过走滑断层位移矢量分析、岩石力学参数分析、应力场数值模拟、构造物理模拟实验研究等，确定走滑构造差异变形活动期次，揭示走滑构造自下往上穿越滑脱层的叠接生长方式和过程，确定走滑构造差异演化过程和差异变形机理，建立塔中隆起和塔中北坡走滑构造差异变形动力学模型。通过走滑构造相关圈闭样式分析及对裂缝储层和岩溶储层、油气运聚成藏控制作用研究，揭示塔中隆起和塔中北坡走滑构造油气成藏过程和主控因素，建立走滑构造差异变形对油气差异聚集成藏和保存的控制机理和模式。项目研究有助于确定克拉通内古隆起和古斜坡走滑构造差异变形机理及其油气成藏效应，具有重要的科学意义和广阔的应用前景。

通过走滑构造地震剖面解释、野外地质调查、三维地震资料属性提取分析，初步确定了塔中隆起和塔中北坡走滑构造变形样式的多样性和差异性，建立了走滑构造平面分区和纵向分层差异变形地质模型，揭示了塔中隆起及其北坡走滑构造分布规律和差异展布模式。通过走滑断层位移矢量分析、岩石力学参数分析、应力场数值模拟、构造物理模拟实验研究等，确定了走滑构造差异变形活动期次，揭示了走滑构造自下往上穿越滑脱层的叠接生长方式和过程，确定了走滑构造差异演化过程和差异变形机理，建立了塔中隆起和塔中北坡走滑构造差异变形动力学模型。通过走滑构造相关圈闭样式分析及对裂缝储层和岩溶储层、油气运聚成藏控制作用研究，揭示了塔中隆起和塔中北坡走滑构造油气成藏过程和主控因素，建立了走滑构造差异变形对油气差异聚集成藏和保存的控制机理和模式，有助于确定克拉通内古隆起和古斜坡走滑构造差异变形机理及其油气成藏效应，具有重要的科学意义和广阔的应用前景。