Detection of sedimentary structural elements using formation micro imager technique, a case study from South Mansoura-1 well, Nile Delta, Egypt

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• 作者：Ahmed G. Abd El-Wahed ; ^{agomaa.eg@gmail.com} ; Tarek I. Anan
• 关键词：Cross bedding ; FMI ; Truncation ; South Mansoura-1 ; Nile Delta ; Egypt
• 刊名：NRIAG Journal of Astronomy and Geophysics
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：5
• 期：2
• 页码：413-434
• 全文大小：19083 K
• 卷排序：5

文摘

A detailed structure and sedimentology interpretation was performed for the South Mansoura-1 well. The Formation Micro Imager (FMI) is recorded and interpreted over the interval 9100–8009 ft. This interval belongs to Sidi Salem and Qawasim Formations. Based on azimuth trend of manually picked dips (bed boundaries), the interval can be divided into 4 structural dip zones (Zone 1 (9100–8800 ft), variable azimuth direction with the major trends mainly to SW≠ Zone 2 (8800–8570 ft), bedding dip azimuth is mainly to the NW; Zone 3 (8570–8250 ft), bedding dip azimuth is mainly to the NE; and Zone 4 (8250–8009 ft), bedding dip azimuth is mainly to the NW). Lamination identified over the interval shows a dominant dip azimuth trend toward North North-West direction. The interbedded shale units are highly laminated and show little evidence of bioturbation. Sand exhibits abundant cross bedding showing a dominant dip azimuth trends toward NNE and NE and more locally to the E. Sixteen truncations identified over the interval show variable azimuth trend with the major trend mainly to the North North-West.