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首页> 外文期刊>International Journal of Geosciences >Geochemical Evaluation for the Hydrocarbon Potential of Source Rocks in the Anza Basin
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Geochemical Evaluation for the Hydrocarbon Potential of Source Rocks in the Anza Basin

机译：ANZA盆地烃源岩烃潜力的地球化学评价

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Anza basin is located in the extensional arm of the central African rift system in the North-Eastern part of Kenya. Cretaceous sedimentary rocks were sampled from the four wells namely, Chalbi-3, Sirius-1, Ndovu-1 and Kaisut-1. Anza basin occurs on a fault block within a Paleocene - Cretaceous rift basin. T he methodological approach used for the evaluation of source rocks i ncluded petrophysical and geochemical methods to ascertain their potential. Well sections with a higher shale-volume ratio were sampled for geochemical screeni ng to determine the organic richness and thermal maturity of poten tial source rocks, respectively. Source rock with organic richness ≥ 0.5 % were evaluated further for their petroleum potential using Rock-Eval pyrolysis to determine their thermal maturity, organo-facies and in-situ generated hydrocarbons present in sedimentary facies. The geochemical evaluation of rock samples from the drilled wells’ sections of Chalbi-3 and Sirius-1 confirmed both oil and gas potential. Gas Chromatography and Mass Spectrometry (GCMS) were used to characterize the biomarker signatures and oil-oil correlation of Sirius-1 samples. A predictive model was developed to integrate the petrophysical and geochemical data to reveal hydrocarbons’ potential in the Anza basin.
机译：Anza Basin位于肯尼亚东北部的中非裂谷系统的延伸臂中。从四个井中取样白垩纪沉积岩即，Chalbi-3，Sirius-1，Ndovu-1和Kaisut-1。 ANZA盆地发生在古典茂 - 白垩纪裂缝盆内的故障块上。用于评估来源岩石的方法论方法，我纳入岩石物理和地球化学方法，以确定其潜力。对具有较高页岩体积比的孔部分被取样用于地球化学筛选，以分别确定Poten Tial源岩的有机丰富度和热成熟度。源岩，有机丰富≥0.5＆amp;＃37;使用岩石 - 醇热解进一步评估其石油潜力，以确定其在沉积相中存在的热成熟度，有机面和原位生成的烃。 Chalbi-3和Sirius-1的钻井孔部分岩石样品的地球化学评价证实了石油和气体潜力。气相色谱和质谱（GCMS）用于表征Sirius-1样品的生物标志物签约和油油相关。开发了一种预测模型，以将岩石物理和地球化学数据集成，以揭示anza盆地中的碳氢化合物潜力。

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