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准噶尔盆地磨拉式建造形成于海西地槽发展的结束时期。建造由粗碎屑岩、火山碎屑岩组成,砾岩、砂岩、泥岩是其特征性岩石组分,从盆地边缘至沉积拗陷中心具砾岩→砂岩→粉砂岩、粘土沉积→泥灰岩、灰岩的顺序;岩相由下而上出现海相、海陆交替相→山麓洪积相、湖相→河湖相的反旋回现象,这是盆地周缘褶皱山系不断加剧上升和向外推移,造成超补偿性沉积的结果。磨拉式建造具有良好的含油性,生油层、储集层发育,生储盖组合条件好,伴随磨拉式建造产生、发展的几大构造系对油气运移、聚集具有重要意义。中央地块和沉积拗陷间的隆起区及建造展布地带均是找油的重要领域。
The construction of the mill-pull type in the Junggar Basin was formed at the end of the development of Haixi Earth’s Trough. Constructed of coarse clastic rocks and volcaniclastic rocks, conglomerate, sandstone and mudstone are the characteristic rock components. From the margin of the basin to the center of sedimentary depression are conglomerate, sandstone, siltstone, clay sediment, marl , And limestone. The facies of marine facies, alternating phases of land and sea → the alluvial facies of the foothills and the lacustrine → lacustrine facies appear from bottom to top in the lithofacies. This is due to the fact that the fold-fold mountain system at the periphery of the basin is increasing and moving outward, The result of overcompensated deposits. Mola-type construction has good oil-bearing, oil-bearing layer, reservoir development, reservoir-cap combination conditions are good, along with the construction of the mill-pull construction and development of several major tectonic systems on the migration and accumulation of oil is of great significance. The uplifts between the central massif and the sedimentary depressions and the construction of the distribution belt are both important areas for oil discovery.