The Jurassic Arab-D reservoir hosts major oil-producing zone in Eastern Saudi Arabia with production from individual wells exceeding 25000 B/D. From a water supply perspective, Saudi water authorities consider it a minor aquifer with small yields of relatively high salinity; hence, it did not receive much attention in previous studies of aquifers. The present paper describes regional hydrogeological characteristics of the Arab-D in terms of groundwater flow, salinity and temperature, and discusses geological factors controlling these characteristics. Although high groundwater salinity in the Arab-D precludes it from being a potential water supply resource, studying the hydrogeology of Arab-D provides a hydrodynamic tool to oil exploration and development project. It also sets the stage for detailed studies of Arab-D aquifer potential use for industrial effluent disposal and as new geothermal energy source. Most of groundwater flow in Arab-D occurs in the porous and permeable grainy-textured upper zones. The top limit of the groundwater flow domain in Arab-D is the overlying massive Arab-D anhydrite unit. Trends in Arab-D hydraulic head, water salinity and temperature show gravity-driven flow towards the coastal region of Eastern Arabia. Major anomalies in these trends exist near the Ghawar, Summan, Jauf and Yabrin north-south faults. These anomalies are results of fault zone architecture that consists of sealing fault core zones surrounded by conductive fault damage zones. Depth, salinity, and temperature of the Arab-D between north Ghawar and Berri fields show that it has potential uses for industrial effluent disposal and geothermal energy projects.

侏罗纪阿拉伯-D油藏是沙特阿拉伯东部的主要产油区，单口井的产量超过25000 B / D。从供水的角度来看，沙特水务当局认为它是含水量较小，盐度相对较高的小含水层。因此，它在以前的含水层研究中并未受到太多关注。本文从地下水流量，盐度和温度的角度描述了Arab-D的区域水文地质特征，并讨论了控制这些特征的地质因素。尽管阿拉伯-阿拉伯地区的高盐度使其无法成为潜在的供水资源，但是研究阿拉伯-阿拉伯地区的水文地质学为石油勘探和开发项目提供了一种水动力工具。它还为详细研究阿拉伯-D含水层在工业废水处理和作为新的地热能源中的应用奠定了基础。阿拉伯-D地区的大部分地下水流发生在多孔且可渗透颗粒状纹理的上部区域。阿拉伯-D地区地下水流域的上限是覆盖的大量阿拉伯-D硬石膏单元。阿拉伯-D水力压头，水盐度和温度的趋势表明，重力驱动的水流流向了阿拉伯东部沿海地区。这些趋势的主要异常现象存在于Ghawar，Summan，Jauf和Yabrin南北断裂附近。这些异常是断层带构造的结果，断层带构造由密封的断层核心带和导电断层破坏带所包围。深度，盐度，