Delineation of Organic Richness and Thermal History of the Lower Cretaceous Thamama Group, East Abu Dhabi: A Modeling Approach for Oil Exploration
Delineation of Organic Richness and Thermal History of the Lower Cretaceous Thamama Group, East Abu Dhabi: A Modeling Approach for Oil Exploration
复制标题
东阿布扎比下白垩统 Thamama 群的有机丰富度和热历史描述：石油勘探的建模方法
作者：
A. Taher
利用测井资料识别了阿布扎比东部下白垩统Thamama群的烃源岩。该技术已应用于33口井，提供了一种采样良好的生油岩分布和厚度新的区域格局。塔玛群在阿普提-舒艾巴陆架内盆地相中含有丰富的烃源岩，在致密层中，尤其是纳斯尔组底部的烃源岩潜力中等。埋藏史和地热史的重建表明，成熟的Thamama厨房主要位于阿布扎比东部，毗邻前深盆地，从始新世开始达到最佳成熟水平。从这些厨房向西的迁移主要是横向和向上向阿布扎比中部的主要Thamama产气田迁移。油气横向运移的结论得到了油源对比和油气在储层中的垂直分布的支持。
The source rocks of the Lower Cretaceous Thamama Group in east Abu Dhabi were identified by using wireline logs. This technique was applied to 33 wells which provided a well-sampled new regional pattern of source rock distribution and thickness. The Thamama Group includes rich source rocks in the Aptian Shu’aiba intra-shelf basin facies and a moderate source rock potential in the dense layers, especially those in the basal part of the Nasr Formation. The reconstruction of the burial and thermal histories indicates that the mature Thamama kitchens are mainly located in the eastern part of Abu Dhabi, adjacent to the foredeep basin and reached optimum maturity levels starting in the Eocene. Westward migration from these kitchens is mainly lateral and updip toward the main Thamama producing fields in central Abu Dhabi. The conclusion that the hydrocarbons migrated laterally is supported by oil to source rock correlation and the vertical distribution of hydrocarbons in the reservoirs.