阿曼山区一次新的石油渗流及其地质、地球化学和石油系统背景

IF 1.8 4区地球科学 Q3 GEOSCIENCES, MULTIDISCIPLINARY

Journal of Petroleum Geology Pub Date : 2021-12-21 DOI:10.1111/jpg.12805

M. Al Kindi, M. Al-Ghammari, A. Heward, P. Taylor, G. Siavalas

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引用次数: 2

摘要

阿曼山脉的一处不太可能的环境中出现了轻微的天然石油渗漏。寄主岩石为异地Hawasina杂岩下部Hamrat-Duru群三叠纪-下侏罗系Matbat组下部的破碎远洋石灰岩。本文总结了阿曼已建立的石油家族和先前记录的石油渗漏文件，作为描述新渗漏、其地球化学和可能的烃源岩的背景。渗油与阿曼油田的渗油不同，可能来源于质量较差的中生代碎屑烃源岩，其中含有陆源和海洋有机质的混合物。最可能的来源似乎是Matbat组的Toarcian浊积上段，相当于阿拉伯地台的碎屑Mafraq组。尽管其商业意义尚待确定，但先前曾怀疑新特提斯-哈瓦西纳盆地异地沉积物中存在烃源岩。

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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A NEW OIL SEEPAGE IN THE OMAN MOUNTAINS AND ITS GEOLOGICAL, GEOCHEMICAL AND PETROLEUM SYSTEMS CONTEXT

A minor natural oil seepage is described from an unlikely setting in the Oman Mountains. The host rocks are fractured pelagic limestones of the lower member of the Triassic – Lower Jurassic Matbat Formation of the Hamrat Duru Group in the lower part of the allochthonous Hawasina Complex. This paper summarises Oman's established oil families and documents previously recorded oil seepages as context for describing the new seepage, its geochemistry, and possible source rock. The seep oil is different to those known from Oman's oil fields and probably derived from a poor quality, Mesozoic clastic source rock containing a mix of terrigenous and marine organic matter. The most likely source appears to be the Toarcian turbiditic upper member of the Matbat Formation, equivalent to the clastic Mafraq Formation of the Arabian Platform. The occurrence of source rocks in the allochthonous sediments of the NeoTethyan Hawasina Basin has been suspected previously, though their commercial significance remains to be established.

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来源期刊

Journal of Petroleum Geology 地学-地球科学综合

CiteScore

3.40

自引率

11.10%

发文量

审稿时长

6 months

期刊介绍： Journal of Petroleum Geology is a quarterly journal devoted to the geology of oil and natural gas. Editorial preference is given to original papers on oilfield regions of the world outside North America and on topics of general application in petroleum exploration and development operations, including geochemical and geophysical studies, basin modelling and reservoir evaluation.