Abstract To better understand reservoir quality in a major oil-producing limestone unit, the Thamama-B zone of the Lower Cretaceous (Barremian) Kharaib Formation, this study compiles and analyzes average values of porosity and permeability measured on 330 well cores in both onshore and offshore areas of the Abu Dhabi Emirate. Most average and individual values plot along a single porosity-permeability trend, which is unaffected by porosity-preserving early oil emplacement and only moderately influenced by texture and clay content. The main trend corresponds with the established field for mud-dominated, microporous limestones, but a subordinate proportion, termed “hi-K” plug samples, have significantly higher permeability-for-given-porosity. The hi-K samples are more abundant in the southwestern part of the study area and also show spatial clustering within individual oilfields. The present macro-scale view of Thamama-B reservoir quality is a new resource that can be useful for both exploration and production planning.

中文翻译：

---

阿布扎比Thamama-B油藏渗透率区域变化

摘要 为了更好地了解下白垩统 (Barremian) Kharaib 组 Thamama-B 区一个主要产油石灰岩单元的储层质量，本研究编制并分析了陆上和 330 个井芯测得的孔隙度和渗透率平均值。阿布扎比酋长国的近海地区。大多数平均值和单个值都沿着单一的孔隙度-渗透率趋势绘制，不受早期保孔隙度石油侵位的影响，仅受质地和粘土含量的适度影响。主要趋势与已建立的以泥浆为主的微孔石灰岩油田一致，但称为“hi-K”塞样品的次要部分具有显着更高的给定孔隙度渗透率。hi-K 样品在研究区的西南部更为丰富，并且在单个油田内也显示出空间聚类。目前 Thamama-B 储层质量的宏观视图是一种新资源，可用于勘探和生产规划。