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Evaluation of hydrocarbon prospects by the use of 3D seismic data at the Cretaceous formations in Jade field, Matruh Basin, North Western Desert, Egypt
Arabian Journal of Geosciences Pub Date : 2021-09-22 , DOI: 10.1007/s12517-021-08335-1
El Sayed I Selim 1, 2 , Mohamed A. Omran 2 , Esraa El-Twargy 2
Affiliation  

Alam El Bueib Formation is one of the most prolific oil-producing reservoirs in the Matruh Basin, Khalda Concession. The Jade oil field is located in the Matruh Basin in the northern part of the Western Desert, Egypt. The primary goal of this project is to learn more about the Alam El Bueib (AEB) Formation’s hydrocarbon presence and entrapment conditions. The analysis of 3D seismic and well log data can help attain these goals. The 3D seismic data interpretation resulted in the identification of a number of significant continuous reflectors that dominated the study region and controlled the major and minor faults. The identified reflectors comprise the following reflectors arranged in ascending order (young to old) as follows: top Alamein Dolomite, AEB-1, AEB-3G, AEB-4, AEB-6, and Masajid and Khatatba formations respectively. The identified reflectors have been correlated using well log data to age the Khatatba and Masajid of the Upper Jurassic. The other reflectors of AEB-1, AEB-3G, AEB-4, and AEB-6 have an age of Lower Cretaceous. The petrophysical characteristics show Alam El Bueib-3G and Alam El Bueib-6 members are mainly composed of sandstone. These members have a good porosity value range from 12.5 to 16%. The hydrocarbon saturation reaches up to 80% and the movable hydrocarbon volume reaches 15%, whereas the water saturation values range between 4 and 22% with a shale volume ranging from 8 to 14%. A master fault with NE-SW trend has been identified splitting the investigated area. On the downthrown side of the master fault, the fault blocks between the normal faults create half grabens. Direct hydrocarbon indicators (DHI) were discovered in seismic data in the form of a bright spot representing the gas-water contact (GWC), which represents evidence of hydrocarbon accumulations in the AEB-3G member at 10,280 ft and the GWC at 12,225 ft in the AEB-6 member.



中文翻译:

利用埃及西北沙漠马特鲁盆地玉田白垩纪地层的 3D 地震资料评价油气前景

Alam El Bueib 组是 Khalda 特许权区 Matruh 盆地最多产的产油油藏之一。翡翠油田位于埃及西部沙漠北部的马特鲁盆地。该项目的主要目标是更多地了解 Alam El Bueib (AEB) 地层的碳氢化合物存在和截留条件。对 3D 地震和测井数据的分析有助于实现这些目标。3D 地震数据解释导致确定了许多重要的连续反射体,这些反射体主导了研究区域并控制了主要和次要断层。识别出的反射层包括以下按升序排列的反射层(从年轻到老):顶部 Alamein Dolomite、AEB-1、AEB-3G、AEB-4、AEB-6 以及 Masajid 和 Khatatba 地层。已识别出的反射体已使用测井数据对上侏罗统的 Khatatba 和 Masajid 进行年龄关联。AEB-1、AEB-3G、AEB-4 和 AEB-6 的其他反射层的年龄为下白垩纪。岩石物理特征表明,Alam El Bueib-3G 和Alam El Bueib-6 段主要由砂岩组成。这些成员具有良好的孔隙率值,范围为 12.5 至 16%。油气饱和度高达 80%,可动油气体积达到 15%,而含水饱和度值在 4% 到 22% 之间,页岩体积在 8% 到 14% 之间。已经确定了一个具有 NE-SW 趋势的主断层分裂了调查区域。在主断层的下降侧,正常断层之间的断块形成半地堑。

更新日期:2021-09-23
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