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作者等在新疆且末县其格勒克侏罗系地层剖面中发现了10层含油砂岩,累计厚达103m,这在塔里木盆地东南断陷尚属首次。该含油砂岩的油源属于浅海相成油母质,来自下伏古生界地层,其储层为中侏罗统洪积-河流相砂体,上侏罗统80余米的暗色泥岩为直接盖层,该含油组合在该拗陷内有一定的代表性,因而这一发现对该区的含油性评价、勘探目的层段的选择提供了方向。
The authors found 10 oil-bearing sandstones in the Jurassic stratigraphic section of the Qieluk, Qiemo County, Xinjiang, accumulating a total thickness of 103m, the first time in the southeast of the Tarim Basin. The oil source of this oil-bearing sandstone belongs to the shallow sea facies oil-gas parent material, derived from the underlying Paleozoic strata. Its reservoir is a middle-Jurassic alluvial-fluvial sand body. The upper Jurassic dark mudstone of 80 meters is a direct caprock. Oil-bearing assemblages are representative of this depression, and this finding provides an orientation for the oily evaluation of the area and the selection of the exploration target interval.