埃及西北沙漠abu gharadig盆地周围的地球物理研究

IF 0.6 4区地球科学 Q4 GEOCHEMISTRY & GEOPHYSICS

Exploration Geophysics Pub Date : 2022-09-21 DOI:10.1080/08123985.2022.2123736

Belal Mohamed Abdelhamed, Sultan Awad Sultan Araffa, T. Abdelhafeez

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引用次数: 0

摘要

本研究旨在确定Abu Gharadig盆地的基底构造和基底相关结构元素我们通过对势场和地震反射数据的综合解释，描绘了影响研究区储层配置的地下特征。研究区位于埃及西北部沙漠，Qattara凹陷以东，北纬29°00'至30°00'，东经28°00'和30°00'E。重力数据解释描绘了浅层特征，NNE-SSW为主要趋势，NW-SE为次要趋势。考虑到欧拉结构指数近似为零，这些趋势可能代表了具有陡峭倾角和大倾角的主要断层，这些断层将具有对比磁化的相当大厚度的岩石并置。另一方面，在更深层次盛行的最常见的构造趋势是NEN-SWS和NW-SE作为主要趋势，而ENE-WSW作为次要趋势。同时，欧拉解的主导构造趋势是NNW-SSE为主，NNE-SSW和WNW-ESE为辅。磁性数据的解释表明，研究区域划分为不同的趋势，其中浅层特征的趋势是NNW-SSE为主要趋势，E-W为次要趋势。另一方面，最常见的深层构造趋势是NNE-SSW和WNW-ESE为主要趋势，E-W、ENE-WSW、NEN-SWS和NWN-SES为次要趋势。同时，欧拉解的主导构造趋势是南北向为主，NW-SE和NE-SW为次要趋势。在研究区域，基岩顶部的深度范围为1731.7 m至4736.6以上 m.根据地震解释，主要断层只影响下白垩统和上白垩统序列，并且似乎有两种趋势，即NW-SE和NWN-SES。这些构造趋势影响了研究区的油藏配置。根据在螺柱区域钻探的钻孔，研究区域包含有价值的储层。

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Geophysical studies around abu gharadig basin, North Western desert, Egypt

The current study aims to determine the basement configuration and basement-related structural elements of the Abu Gharadig basin.: We delineated subsurface features that affect the configuration of reservoirs in the study area using an integrated interpretation of potential field and seismic reflection data. The study area lies in the North-Western Desert of Egypt to the east of the Qattara Depression, between latitudes 29° 00’ and 30° 00’ N and longitudes 28° 00’ and 30° 00’ E. Gravity data interpretation delineates shallow features, with NNE-SSW as the major trend and NW-SE as the minor trend. Given that the Euler structural index is approximately zero, these trends probably represent major faults with steep dips and large throws, which juxtapose considerable thicknesses of rocks with contrasting magnetization. On the other hand, the most common tectonic trends prevailing in the deeper levels are the NEN-SWS and NW-SE as the major trends and ENE-WSW as a minor trend. At the same time, the dominant tectonic trend from the Euler solution is NNW-SSE as a major trend and NNE -SSW and WNW-ESE as minor trends. The interpretation of magnetic data indicates the study area dissect by different trends where the trends of shallow features are NNW-SSE as a major trend and E-W as a minor trend. On the other hand, the most common tectonic trends prevailing in the deeper levels are the NNE-SSW and WNW-ESE as major trends and E-W, ENE-WSW, NEN-SWS, and NWN-SES as minor trends. At the same time, the dominant tectonic trend from the Euler solution is N-S as a major trend and NW-SE and NE-SW as minor trends. In the study area, the depth to the top of the basement rocks ranges from 1731.7 m to more than 4736.6 m. Main faults only affect the Lower and Upper Cretaceous sequences, according to seismic interpretation, and appear to be in two trends, the NW-SE and NWN-SES. These structural trends affect the configuration of oil reservoirs in the study area. The study area contains valuable reservoirs according to boreholes drilled in the stud area.

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来源期刊

Exploration Geophysics 地学-地球化学与地球物理

CiteScore

2.30

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Exploration Geophysics is published on behalf of the Australian Society of Exploration Geophysicists (ASEG), Society of Exploration Geophysics of Japan (SEGJ), and Korean Society of Earth and Exploration Geophysicists (KSEG). The journal presents significant case histories, advances in data interpretation, and theoretical developments resulting from original research in exploration and applied geophysics. Papers that may have implications for field practice in Australia, even if they report work from other continents, will be welcome. ´Exploration and applied geophysics´ will be interpreted broadly by the editors, so that geotechnical and environmental studies are by no means precluded. Papers are expected to be of a high standard. Exploration Geophysics uses an international pool of reviewers drawn from industry and academic authorities as selected by the editorial panel. The journal provides a common meeting ground for geophysicists active in either field studies or basic research.