埃及西部沙漠贝尼苏埃夫盆地石油系统评估

IF 2.2 4区 地球科学 Q2 GEOSCIENCES, MULTIDISCIPLINARY Journal of African Earth Sciences Pub Date : 2024-07-08 DOI:10.1016/j.jafrearsci.2024.105345
Sherif Farouk , Mohamed Arafat , Mohamed S. Fagelnour , Khaled Al-Kahtany , Thomas Gentzis
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引用次数: 0

摘要

在埃及西北部沙漠地区,贝尼苏伊夫盆地是最重要的油气盆地之一。经过 50 多年的勘探和生产,目前面临的主要挑战是找到油气产量丰富的新区域。这项研究旨在通过整合地球化学方法、一维和二维盆地建模、测井记录分析、地震解释和碳氢化合物迁移路径,确定潜在的钻探地点。研究结果表明,下哈里塔页岩含有可生成石油和天然气的角质,其生成潜力从一般到非常好不等。根据一维盆地建模,下哈里塔页岩中的源岩已经成熟(主要石油窗口),转化率高达 60%。模拟的二维玻璃光泽反射率图显示,贝尼苏伊夫油田北部和南部的碳氢化合物生成深度超过 10850 英尺(3306 米),玻璃光泽反射率值大于 0.65%。对两个主要储层进行了研究。下部 Bahariya 和上部 Kharita 储层由分选良好至中等的砂岩组成。绘制了地下结构图、储层图、源图和充填模型图,以显示迁移路径和积聚区。共确定了三个积聚区。第一积聚区位于主要正断层的高构造上倾段,迁移方向为西北。第二和第三个积聚区位于低构造和正断层的下倾段,碳氢化合物从东南方向迁移。后两个区域应在未来进行钻探测试。
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Petroleum system assessment of the Beni Suef Basin, Western Desert, Egypt

Within the northwestern Desert of Egypt, the Beni Suef Basin is one of the most significant hydrocarbon basins. After over 50 years of exploration and production, the main challenge today is to locate new areas that are prolific to oil and gas production. The study aims to identify potential drilling locations by integrating geochemical methods, 1D and 2D basin modelling, well log analysis, seismic interpretation, and hydrocarbon migration pathways. Results show that the Lower Kharita shale contain both oil and gas generating kerogen with generating potential that ranges from fair to very good. The source rocks within the Lower Kharita are mature (main oil window) and have a transformation ratio of up to 60% based on 1D basin modeling. The modelled 2D vitrinite reflectance map showed that hydrocarbon generation occurred at depths greater than 10850 ft (3306 m) with vitrinite reflectance values greater than 0.65% in both the northern and southern parts of the Beni Suef Field. Two main reservoirs were studied. The lower Bahariya and upper Kharita reservoirs are composed of well to moderately sorted sandstone. The subsurface structural maps, reservoirs, source, and charge modeling maps have been constructed to show the migration pathways and accumulation areas. There are three accumulation areas identified. The first accumulation area is located in the high structure up-dip section of the major normal fault, and migration direction is from northwest. The second and third accumulation areas are located in the low structure and down-dip from the normal fault, with migration of hydrocarbons from southeast. The latter two areas should be tested by drilling in the future.

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来源期刊
Journal of African Earth Sciences
Journal of African Earth Sciences 地学-地球科学综合
CiteScore
4.70
自引率
4.30%
发文量
240
审稿时长
12 months
期刊介绍: The Journal of African Earth Sciences sees itself as the prime geological journal for all aspects of the Earth Sciences about the African plate. Papers dealing with peripheral areas are welcome if they demonstrate a tight link with Africa. The Journal publishes high quality, peer-reviewed scientific papers. It is devoted primarily to research papers but short communications relating to new developments of broad interest, reviews and book reviews will also be considered. Papers must have international appeal and should present work of more regional than local significance and dealing with well identified and justified scientific questions. Specialised technical papers, analytical or exploration reports must be avoided. Papers on applied geology should preferably be linked to such core disciplines and must be addressed to a more general geoscientific audience.
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