Delving into the Jurassic sediments of the Matruh basin, Northwestern Desert, Egypt: A multidisciplinary approach using seismic data, stratigraphic analysis, and 3D facies modeling

IF 3.7 2区 地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY Marine and Petroleum Geology Pub Date : 2025-03-12 DOI:10.1016/j.marpetgeo.2025.107376
Amr M. Eid, Mohammed Amer, Walid M. Mabrouk, Ahmed El-khteeb, Ahmed Metwally
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Abstract

This study integrates multiscale datasets, including seismic interpretation, well-log analysis, and sequence stratigraphy, to evaluate reservoir potential and spatial distribution within the Khatatba Formation of the Obayied Oilfields, Northwestern Desert, Egypt. Seismic interpretation reveals NE-SW trending horsts, grabens, and step faults, segmenting the study area into eleven structural blocks. Structural cross-sections highlight lateral extensions, thickness variations, and fault-controlled reservoir compartmentalization. The Khatatba Formation is analyzed within the Masajid-Khatatba sequence (M.K. SQ), exhibiting mixed siliciclastic and carbonate lithofacies, distinct wireline-log signatures, and seismic reflections. Petrophysical analysis identifies the sandstone-rich LST-1 as a key reservoir zone, while the Masajid Formation offers limited potential. Advanced 3D facies models of the Upper and Lower Safa Members enhance insights into structuration and facies distribution. The Upper Safa Member exhibits porosity of 10–18 %, shale volume of 15–24 %, and water saturation of 18–53 %, while the Lower Safa Member shows porosity of 10–16 %, shale volume of 17–28 %, and water saturation of 15–47 %, with improved reservoir quality in the northeast and southeast, respectively. Geochemical analysis indicates Total Organic Carbon (TOC) values of 1–5 % in Jurassic formations, confirming moderate to good source rock potential. The Upper Jurassic Masajid Formation, with substantial carbonate content, serves as an effective seal rock, while faults from Late Cretaceous to Early Miocene inversion structures influence hydrocarbon migration and reservoir compartmentalization. These findings enhance understanding of hydrocarbon prospectivity, providing a foundation for optimized exploration and development strategies in the Obayied Field and the broader Matruh-Shushan Basin.
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本研究整合了多尺度数据集,包括地震解释、井录分析和层序地层学,以评估埃及西北沙漠奥巴耶德油田哈特巴地层的储层潜力和空间分布。地震解释揭示了东北-西南走向的地角、地堑和阶梯断层,将研究区域划分为 11 个构造区块。构造横断面凸显了横向延伸、厚度变化以及断层控制的储层分隔。在 Masajid-Khatatba 层序(M.K. SQ)中对 Khatatba Formation 进行了分析,该层序展示了硅质岩和碳酸盐岩的混合岩性、独特的线绳记录特征和地震反射。岩石物理分析表明,富含砂岩的 LST-1 是一个关键的储层区,而 Masajid 地层的潜力有限。萨法上统和萨法下统的先进三维岩相模型提高了对构造和岩相分布的认识。萨法上统孔隙率为 10-18%,页岩体积为 15-24%,含水饱和度为 18-53%;萨法下统孔隙率为 10-16%,页岩体积为 17-28%,含水饱和度为 15-47%,东北部和东南部的储层质量分别有所提高。地球化学分析表明,侏罗纪地层的总有机碳(TOC)值为 1-5%,证实了中等至良好的源岩潜力。含有大量碳酸盐的上侏罗统马萨吉德地层是有效的封隔岩,而从晚白垩世到早中新世的反转结构断层则影响着油气迁移和储层分隔。这些发现加深了人们对油气远景的了解,为优化奥巴耶德油田和更广阔的马特鲁-舒山盆地的勘探和开发战略奠定了基础。
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来源期刊
Marine and Petroleum Geology
Marine and Petroleum Geology 地学-地球科学综合
CiteScore
8.80
自引率
14.30%
发文量
475
审稿时长
63 days
期刊介绍: Marine and Petroleum Geology is the pre-eminent international forum for the exchange of multidisciplinary concepts, interpretations and techniques for all concerned with marine and petroleum geology in industry, government and academia. Rapid bimonthly publication allows early communications of papers or short communications to the geoscience community. Marine and Petroleum Geology is essential reading for geologists, geophysicists and explorationists in industry, government and academia working in the following areas: marine geology; basin analysis and evaluation; organic geochemistry; reserve/resource estimation; seismic stratigraphy; thermal models of basic evolution; sedimentary geology; continental margins; geophysical interpretation; structural geology/tectonics; formation evaluation techniques; well logging.
期刊最新文献
Editorial Board Delving into the Jurassic sediments of the Matruh basin, Northwestern Desert, Egypt: A multidisciplinary approach using seismic data, stratigraphic analysis, and 3D facies modeling Hydraulic and thermal controls on gas production from methane hydrate reservoirs Petrologic and geochemical evolution of carbonates of South Bruce region, Southwest Ontario: Dolomite petrogenesis and fluid flow evolution Analysis of the correlation between fracture topology and mechanical properties of rocks in fractured carbonate reservoirs: In Dehram group, Fars arc Zone (Southwest Iran)
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