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塔里木盆地沙雅隆起雅克拉地区钻遇三叠系深灰色泥岩、黑色炭质页岩,根据岩屑和岩心样品的地球化学分析结果认为,该区三叠系烃源岩有机质丰度达到较好—好烃源岩标准,以Ⅲ型和ⅡB型为主,并处于成熟—生油高峰阶段,具有一定的生烃潜力。可溶有机质具有高的姥鲛烷/植烷比值和低的二苯并噻吩/菲比值;C21/C23三环萜烷大于1.0,C27～C29甾烷系列的丰度呈反“L”字型分布等特征,明显不同于塔河油田原油和O3l奥陶系烃源岩。三叠系烃源岩中未检测出C30重排藿烷系列,也不同于库车坳陷侏罗系恰克马克组下段湖相泥岩。雅克拉地区三叠系烃源岩具有一定的资源潜力,是该地区潜在的烃源岩。
Triassic dark-gray mudstone and black carbonaceous shale have been drilled in the Yakela area, Shaya Uplift, Tarim Basin. According to the geochemical analysis of the cuttings and core samples, the organic matter abundance of the Triassic source rocks in this area is relatively good Good source rock standards, mainly Type III and Type IIB, and in the mature - peak oil production stage, with some potential for hydrocarbon generation. Soluble organic matter has a high pristane / phytane ratio and a low dibenzothiophene / phenanthrene ratio; the C21 / C23 tricyclic terpane is greater than 1.0 and the C27-C29 sterane series exhibits an inverse “L” Fonts and other characteristics, significantly different from the Tahe Oilfield and O3l Ordovician source rocks. No C30 rearranged hopane series were detected in the Triassic source rock and also different from the lacustrine mudstone in the lower part of the Jurassic Chakmak Formation in the Kuqa Depression. The Triassic source rocks in the Yakela region have potential resources and are potential source rocks in this area.