摘要
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。
There are two domains of petroleum exploration in Tibet-the Mesozoic marine domainand Cenozoic continental domain.The marine domain can be further divided into Qiangtang,Lasa and Jiangzi blocks. Among them,Qiangtang block has relatively favourable prospectsbecause the deep tectonic movement and the deformation of sedimentary cover in it are lessserious than the other two blocks. Continental domain mainly includes two kinds of basinswith different properties:compresso-depressed basins and strike-slip faulted basins. LunpolaBasin,a typical strike-slip faulted basin, is the focal target for oil and gas exploration in Tibet recently since commercial oil flow has been drilled in this basin.Various kinds of residual plateau basins developed in the region since Himalaya movement. They are a special kind of basins in orogenic zone. Wether a complex of geomorphicstructural-sedimental basin could form is an important factor to determine hydrocarbon potential of the plateau basins; the depth of oil oxidation surface in the basin is also a key factor in evaluation of preservation condition
出处
《石油与天然气地质》
EI
CAS
CSCD
北大核心
1996年第1期22-26,共5页
Oil & Gas Geology
