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Geophysical studies around abu gharadig basin, North Western desert, Egypt
Exploration Geophysics ( IF 0.9 ) Pub Date : 2022-09-21 , DOI: 10.1080/08123985.2022.2123736
Belal Mohamed Abdelhamed 1 , Sultan Awad Sultan Araffa 2 , Tharwat Abdelhafeez 3
Affiliation  

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.



中文翻译:

埃及西北部沙漠 abu gharadig 盆地周围的地球物理研究

目前的研究旨在确定 Abu Gharadig 盆地的基底配置和基底相关结构元素。:我们使用位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沙漠,卡塔拉凹陷以东,北纬29°00'至30°00',东经28°00'至30°00'之间。重力数据解释圈定浅层特征,以​​ NNE-SSW 为主要趋势,NW-SE 为次要趋势。鉴于欧拉结构指数近似为零,这些趋势可能代表具有陡倾角和大落差的主要断层,这些断层将相当厚的岩石与对比磁化并列。另一方面,在更深层次上最常见的构造趋势是 NEN-SWS 和 NW-SE 作为主要趋势,ENE-WSW 作为次要趋势。同时,欧拉解的主导构造走向为北西-南东为主走向,北东-南南西向和西北-东东走向为次要走向。磁学资料解释表明研究区按不同趋势进行剖析,其中浅层特征趋势以NNW-SSE为主要趋势,EW为次要趋势。

另一方面,在更深层次上最常见的构造趋势是 NNE-SSW 和 WNW-ESE 作为主要趋势,EW、ENE-WSW、NEN-SWS 和 NWN-SES 作为次要趋势。同时,欧拉解的主导构造走向以南北向为主要走向,以北西-南东和北东-西南为次要走向。研究区基岩顶层深度为1731.7 m~4736.6 m以上。根据地震解释,主要断层仅影响下白垩纪和上白垩统层序,并且似乎呈两种趋势,即 NW-SE 和 NWN-SES。这些构造趋势影响着研究区油藏的配置。根据在螺柱区钻探的钻孔,研究区包含有价值的储层。

更新日期:2022-09-21
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