论文部分内容阅读
塔里木盆地北部的库车坳陷经过燕山和喜山运动的强烈挤压，并受第三系盐岩蠕变和侏罗系煤层滑脱的控制，形成深、中、浅层截然不同的变形样式和组合，平面展布也有不同特点。本文依变形机制和特点划分出三层构造变形层序：即浅层构造变形层序，以第三系盐岩底界为界面，变形受盐岩蠕变与挤压的联合作用，构造高点的迁移变化较大；中层以第三系盐岩－侏罗系煤层为主体，主要受挤压滑脱控制，构造成带性较好；深层属弱变形层序。中层盐下构造有断层自深部输导油气，且本身构造的完整性与成带性较好，又有盐岩封盖，成藏条件最好，是勘探找油的重点层系。
The Kuqa depression in the northern part of the Tarim Basin was strongly crushed by the Yanshan and Himalayan movements and controlled by the Tertiary saltstone creep and the Jurassic coal seam slippage, forming distinct deformation modes of deep, medium and shallow layers and Combination, plane spread also has different characteristics. According to deformation mechanism and characteristics, this paper classified three layers of deformation sequence: the shallow deformation sequence, the third line of salt rock bottom boundary as the interface, the deformation by salt rock creep and extrusion joint action, the construction of high The middle part of the middle part is mainly composed of Tertiary salt rock and Jurassic coal seam, controlled mainly by extrusion and slippage, and is structurally zonal with good strata. The deep layer is a weak deformation sequence. The middle sub-salt structure has a fault that conducts oil and gas from the deep, and has the integrity and zoning of its own structure and the salt rock capping. It has the best hydrocarbon accumulation conditions and is the key strata for exploration and oil prospecting.