Integrated geomechanical, petrographical and petrophysical study of the sandstones of the Wajid Group, SW Saudi Arabia 机翻标题: 暂无翻译,请尝试点击翻译按钮。

来源
Journal of African earth sciences
年/卷/期
2018 / 143 / Jul.
页码
162-177
ISSN号
1464-343X
作者单位
Geosciences Department, College of Petroleum Engineering and Geosciences, King Fahd University of Petroleum & Minerals;Geosciences Department, College of Petroleum Engineering and Geosciences, King Fahd University of Petroleum & Minerals;Geosciences Department, College of Petroleum Engineering and Geosciences, King Fahd University of Petroleum & Minerals;Geosciences Department, College of Petroleum Engineering and Geosciences, King Fahd University of Petroleum & Minerals;Geosciences Department, College of Petroleum Engineering and Geosciences, King Fahd University of Petroleum & Minerals;
作者
Mohammed Benaafi;Mustafa Hariri;Abdulaziz Al-Shaibani;Osman Abdullatif;Mohammed Makkawi;
摘要
The Cambro-Permian siliciclastic succession in southwestern Saudi Arabia is represented by the Wajid Group, which consists mainly of fluvial, shallow marine, aeolian, and glacial sandstones. The Wajid Group comprises the Dibsiyah, Sanamah, Qalibah, Khusayyayn, and Juwayl Formations. It is exposed in the Wadi Al-Dawasir area and extends to Najran City. The sandstones of the Wajid Group serve as groundwater aquifers in the Wadi Al-Dawasir and Najran areas and host hydrocarbon (mainly gas) reservoirs in the Rub’ Al-Khali Basin. This study aims to characterize the geomechanical properties (rock strength and Young's modulus) of the sandstones of the Wajid Group using field and experimental techniques. A further objective is to investigate the relationships between the geomechanical properties and the petrographical and petrophysical properties of the studied sandstones. The geomechanical properties of the studied sandstones vary from glacial to non-glacial sandstones, as the glacial sandstones display high values of the geomechanical properties with high variability indices. Four geological factors including grain size, cement content, porosity and permeability were observed as the main controls on the geomechanical behaviour of the studied sandstones except for the Khusayyayn sandstone, where the mineral composition was also important. Significant correlations were observed between the petrographical and petrophysical properties and the geomechanical properties of the glacial sandstones. Predictive models of the geomechanical properties (RN, UCS, and E) were generated using regression analysis to account for the glacial sandstones.
机翻摘要
暂无翻译结果,您可以尝试点击头部的翻译按钮。
关键词/主题词
Wajid group;Sandstones;Geomechanical properties;Rub' Al-Khali Basin;Saudi Arabia;
若您需要申请原文,请登录。

最新评论

暂无评论。

登录后可以发表评论

意见反馈
返回顶部