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中上侏罗统是准噶尔盆地腹部重要的勘探目的层系,近年来取得了一系列重要的油气发现。利用钻井、测井和地震资料对腹部地区117口钻井进行分层,在砂体厚度、含砂率统计的基础上,编制了西山窑组、头屯河组和齐古组的砂体等厚图,并结合取心井的岩心观察,编制了相应层段的沉积相图。准噶尔盆地腹部,尤其是中石化区块中上侏罗统的沉积相,主要受燕山期形成的横跨准噶尔盆地的车—莫古隆起控制,车—莫古隆起的发育和演化为盆地腹部地区创造了独特的油气运聚背景,决定了腹部探区具有多期构造演化与多期成藏的特点。
Middle-upper Jurassic is an important exploration target strata in the abdomen of Junggar Basin. In recent years, a series of important hydrocarbon discoveries have been made. Based on the statistics of sand thickness and sand content, 117 drilling wells in the abdomen area were stratified by drilling, logging and seismic data. Sandstone body thicknesses of Xishanyao Formation, Toutunhe Formation and Qigu Formation were prepared The sedimentary facies map of the corresponding interval is compiled according to the core observation of coring well. The sedimentary facies of the Middle Jurassic in the Junggar Basin belly, especially in the Sinopec block, are controlled mainly by the Mooguang uplift across the Junggar Basin formed during the Yanshanian period. The development and evolution of the car-Moogu uplift are created in the belly of the basin The unique background of hydrocarbon migration and accumulation determines the characteristics of multi-phase tectonic evolution and multi-period hydrocarbon accumulation in the belly exploration area.