Reservoir Potential of Gombe Sandstone around Kalshingi Area, Northern Benue Trough, N-E, Nigeria.

Science Forum (Journal of Pure and Applied Sciences) Pub Date : 1900-01-01 DOI:10.5455/sf.19300

Nabage A, M. S., Yelwa A, A. M., M. Aliyu, Samson O

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Abstract

Granulometric and petrographic analyses were carried out on the Gombe Sandstone around Kalshingi area of the Gongola Basin, Northern Benue Trough with the aim of investigating its reservoir potential. Based on the granulometric analysis, the Gombe Sandstone in the study area consists of coarse to very fine grained, and poorly to moderately well sorted sandstone. According to the cumulative frequency curves and histograms, the sandstones are mostly negatively skewed with dominantly unimodal distribution which indicates accumulation from a single source. Based on the petrographic study, quartz, feldspar, muscovite, and rock fragments are the framework elements found in the sediments. The sandstones are arkosic to subarkosic, dominantly matrix supported, angular to sub-rounded (low sphericity) grains. These are indications that the sediments have suffered only short distance of transportation, thus making them of poor-moderate reservoir quality. ARTICLE INFO Article history: Received 30 November 2018 Received in revised form 14 May 2019 Accepted 15 May 2019 Published 06 June 2019 Available online 06 June 2019

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尼日利亚东北部贝努埃海槽北部Kalshingi地区Gombe砂岩储层潜力

对北贝努埃海槽贡戈拉盆地Kalshingi地区贡贝砂岩进行了颗粒学和岩石学分析，探讨了其储层潜力。通过粒度分析，研究区贡贝砂岩为粗粒至极细粒砂岩，分选差至中等。从累积频率曲线和直方图上看，砂岩多呈负偏态分布，以单峰分布为主，表明砂岩的成藏来源单一。岩石学研究表明，石英、长石、白云母和岩石碎屑是沉积物中的骨架元素。砂岩为粗砂岩至亚粗砂岩，以基质支撑为主，颗粒呈角状至亚圆形(低球度)。这说明沉积物的搬运距离较短，属于中差储层性质。文章信息文章历史:2018年11月30日收稿2019年5月14日收稿2019年5月15日接受2019年6月6日发布2019年6月6日在线发布

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Science Forum (Journal of Pure and Applied Sciences)

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