Issaran oil field is a major heavy oil field in the Western shoreline of the Gulf of Suez, Egypt, which is facing challenges in field development and operations. Therefore, it is under development for many years to identify the required parameters to improve the quality of the produced oil. Identifying the source of groundwater mixing with heavy oil during the production process is a prerequisite. Geoelectric resistivity survey is suggested to identify aquifer characteristics, as well as the distribution of structural elements affecting the groundwater aquifer in Issaran oil field. A total of 94 Vertical Electrical Resistivity Soundings (VESs) were conducted to evaluate the groundwater aquifer. The recorded VESs were corrected and modeled to create two-dimensional profiles (2D) and areal contour maps throughout the studied site. Geoelectric modeling revealed five distinct resistivity subsurface layers. The top three layers are corresponding to dry friable gravelly sand and alluvial sediments of a total thickness of about 15–70 m and resistivity values ranging from 15 to 200 Ω m. The fourth layer represents the groundwater bearing horizon and is characterized by high degree of saline water saturation, where resistivity ranged from 0.5 to 15 Ω m. Finally, the lower stratigraphic layer is characterized by its relatively high resistivity (greater than 70 Ω m), and it is not observed through all the conducted VESs. The findings shows that the groundwater bearing horizon is structurally controlled and is mainly affected by the Red Sea structural regime, which could act as seawater passages to the oil field area.

伊萨兰油田是埃及苏伊士湾西部海岸线的主要重油油田，在油田开发和运营中面临着挑战。因此，确定改善油的质量的必要参数已经进行了多年的开发。先决条件是确定生产过程中地下水与重油混合的来源。建议通过地电电阻率调查来确定含水层特征以及影响伊萨兰油田地下水含水层的结构元素的分布。总共进行了94次垂直电阻率测深（VES）评估地下水含水层。对记录的VES进行校正和建模，以在整个研究站点中创建二维轮廓（2D）和平面轮廓图。地电模型揭示了五个不同的电阻率地下层。最上面的三层对应于干燥的易碎碎石砂和冲积沉积物，总厚度约为15-70 m，电阻率值在15到200Ωm之间。第四层代表着地下水层，其特征是盐水饱和度高，电阻率范围从0.5到15Ωm。最后，下部地层的特征在于其相对较高的电阻率（大于70Ωm），并且在所有导电VES中均未观察到。研究结果表明，含地下水层系受到结构控制，并且主要受红海结构制度的影响，该制度可能会成为通往油田区域的海水通道。最上面的三层对应于干燥的易碎碎石砂和冲积沉积物，总厚度约为15-70 m，电阻率值在15到200Ωm之间。第四层代表着地下水层，其特征是盐水饱和度高，电阻率范围从0.5到15Ωm。最后，下部地层的特征在于其相对较高的电阻率（大于70Ωm），并且在所有导电VES中均未观察到。研究结果表明，含地下水层系受到结构控制，并且主要受红海结构制度的影响，该制度可能会成为通往油田区域的海水通道。最上面的三层对应于干燥的易碎碎石砂和冲积沉积物，总厚度约为15-70 m，电阻率值在15到200Ωm之间。第四层代表着地下水层，其特征是盐水饱和度高，电阻率范围从0.5到15Ωm。最后，下部地层的特征在于其相对较高的电阻率（大于70Ωm），并且在所有导电VES中均未观察到。研究结果表明，含地下水层系受到结构控制，并且主要受红海结构制度的影响，该制度可能会成为通往油田区域的海水通道。