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西藏有中生代海相和新生代陆相两大勘查领域。在海相领域中,可进一步分为羌塘、拉萨、江孜三大目标区块,前者由于深部构造和盖层变形作用较其它两个区块稳定,因而具有较好的油气勘查前景。陆相领域主要包括两类不同性质的盆地,压陷盆地和走滑拉分盆地,其中,代表走滑拉分盆地的伦坡拉盆地已初获工业油气流,是目前西藏油气勘查的重点。作为喜山运动以来整体隆升背景下残留的各类高原盆地,是造山带盆地的一种特殊类型,能否形成地貌-构造-沉积盆地的统一体,是决定含油气前景的重要因素;盆地内部的油气氧化界面深度,是评价保存条件的关键。
Tibet has Mesozoic marine and Cenozoic continental two prospecting areas. In the marine area, it can be further divided into three major target blocks: Qiangtang, Lhasa and Gyangze. The former has better prospects for oil and gas exploration due to the stability of the deep structure and the deformation of the caprock than the other two blocks. The continental field mainly consists of two types of basins, depression basins and strike-slip sub-basins. Among them, the Lunpola Basin, which represents the strike-slip sub-basin, has been the first to receive industrial oil and gas flows and is currently the focus of Tibetan oil and gas exploration. As a special type of orogenic belts, all kinds of plateau basins that remained after the whole uplift of the Himalayan movement could form a unified body of geomorphic-tectonic-sedimentary basins, which is an important factor in determining the prospects of oil and gas. Basin The depth of the internal oxidation of oil and gas interface, is the key to evaluate the preservation conditions.