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首页> 外文期刊>Journal of African Earth Sciences >Tectonostratigraphic evolution of the new frontier Foram Basin and implications for hydrocarbon potential, Western Desert, Egypt
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Tectonostratigraphic evolution of the new frontier Foram Basin and implications for hydrocarbon potential, Western Desert, Egypt

机译：新的前沿福林盆地的构造论力演变与碳沙漠西部沙漠潜力的影响

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摘要

The Western Desert of Egypt is an important hydrocarbon province as it consists of many petroliferous sedimentary basins. The researchers and petroleum companies are interested in exploring the new frontier sedimentary basins and evaluating their hydrocarbon potential. Given this point of view, the current study attempts to assess the new frontier sedimentary basin in the Western Desert of Egypt, named Foram Basin (FB), using various geophysical and geological methods, including the magnetic, gravity, and seismic methods in addition to the petroleum system and basin analysis modeling. The magnetic data analysis uses various techniques, including power spectrum and source parameter image, total magnetic intensity (TMI), reduction to the pole (RTP), regional-residual separation, and tilt derivative. The used techniques in the interpretation of gravity data include Bouguer gravity, power spectrum, regional-residual separation of Bouguer gravity, tilt derivative of the Bouguer gravity and gravity inversion, and 2D gravity modeling, in addition to the tentative basement depth based on the gravity inversion and 2D gravity modeling for the nine profiles. The main results of these techniques indicate that the main structural trend is NE-SW and the depth to the basement ranges from 1.8 to 5 km comprising two depocenters.Two-thirds of the sedimentary basin fill is a Paleozoic succession and one-third is a Mesozoic-Cenozoic succession. Therefore, the FB is thought to be a Paleozoic basin. The Paleozoic-Mesozoic stratigraphic framework of the FB was classified into six seismic sequences separated by the seven seismic boundaries. The main regional structural trend of the FB is NE-SW, the same trend as that of the Paleozoic Kufra Basin in Libya. In the FB, the major structural trend in the Early Paleozoic is NE-SW, whereas it is E-W in Late Paleozoic. Moreover, in Mesozoic Jurassic time, the dominant trends are E-W and ENE-WSW, and in Middle Cretaceous is ENE-WSW and in Upper Cretaceous are E-W and NE-SW. Regarding the tectonic subsidence rate, the FB passed three tectonic phases. The first tectonic phase has a high subsidence rate that occurred in the Paleozoic, resulting in the deposition of most of the sedimentary succession. The second and third tectonic phases occurred at a relatively low subsidence rate, resulting in the deposition of Mesozoic-Cenozoic deposits. The Paleozoic Silurian Kohla source rock passed the early generation phase in the Early Eocene (50 Ma) and reached a maximum generation rate of 2.77 (mg/gTOC^my) in Late Oligocene (27 Ma) that is considered a very low rate and did not allow for oil expulsion.
机译：埃及西部沙漠是一种重要的碳氢化合物省，因为它包括许多凡士酒沉积盆地。研究人员和石油公司有兴趣探索新的前沿沉积盆地和评估其碳氢化合物潜力。鉴于此观点来看，目前的研究试图评估埃及西部沙漠的新的前沿沉积盆地，命名为Foram盆地（FB），包括磁性，重力和地震方法石油系统和盆地分析建模。磁数据分析使用各种技术，包括功率谱和源参数图像，总磁强度（TMI），降低到极（RTP），区域剩余分离和倾斜衍生物。在重力数据的解释中的使用技术包括Bouguer重力，功率谱，Bouguer重力的区域剩余分离，倾斜衍生的Bouguer重力和重力反演，以及除了基于重力的暂定基底深度之外的2D重力建模。九个配置文件的反转和2D重力建模。这些技术的主要结果表明，主要结构趋势是NE-SW，地下室的深度为1.8至5km，包括两个沉积盆地的两三分之一是古生代的继承，三分之一是一个中生代古生代继承。因此，FB被认为是古生代盆地。将FB的古生代 - 中生代地层骨架分为六个被七个地震界限分开的六个地震序列。 FB的主要区域结构趋势是NE-SW，与利比亚古生代Kufra盆地的趋势相同。在FB中，早期古生代的主要结构趋势是NE-SW，而它在古生代是E-W。此外，在中生代侏罗纪时间，主导趋势是E-W和ENE-WSW，在中间白垩纪是ENE-WSW，并且在上白垩纪是E-W和NE-SW。关于构造沉降率，FB通过了三个构造阶段。第一构造阶段具有古生代中发生的高沉降率，导致大部分沉积连续的沉积。第二和第三构造相以相对较低的沉降率发生，导致中生型新生代沉积物沉积。古生代硅藻土源岩在早期何世季（50mA）中通过了早期发生阶段，达到了最大的2.77（mg / gtoc＆ ^ ^ ^ ^ ^＆我）的最大产生率被认为是非常低的速率，不允许油驱。

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