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北非Pelagian盆地是中、新生代含油气盆地,自侏罗系Jerba组到中新统Tazerka组均有储层发育,但下始新统顶部的货币虫滩坝灰岩是主力储集层,利比亚海上已发现储量的80%分布在货币虫灰岩储层中。Pelagian盆地C区块在构造高部位钻井2口,均因货币虫灰岩段的缺失而失利。通过正演、反演及地震多属性提取等技术手段,结合地质、钻井、测井、沉积古地貌等信息对下始新统Metlaoui群El Garia组货币虫灰岩进行了识别与预测。
Pelagian Basin in North Africa is a Mesozoic and Cenozoic petroliferous basin. Both the Jurassic Jerba Formation and the Miocene Tazerka Formation have reservoir development. However, the beetle dam on the top of the Lower Eocene is the main reservoir. Libya Eighty percent of the reserves found offshore are distributed in the currency worm limestone reservoir. Block C of the Pelagian Basin drilled two high-lying structures, both of which were lost due to the absence of the currency limestone section. Through the methods of forward modeling, inversion and multi-attribute seismic extraction, the authors identify and predict the currency of the El Garia currency of the Lower Paleocene Metlaoui Group by combining the information of geology, drilling, logging and sedimentary paleotopography.