Investigation of Surakhani light crude oil compounds as a case study using modern spectroscopic techniques

IF 2.4 4区工程技术 Q3 ENERGY & FUELS Journal of Petroleum Exploration and Production Technology Pub Date : 2023-09-20 DOI:10.1007/s13202-023-01702-6

Ulviyya Yolchuyeva, Rena Japharova, Matlab Khamiyev, Fakhranda Alimardanova

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Abstract

Abstract The complex application of modern analysis methods (FT-IR, NMR, GC–MS and UV/Vis) allowed us to study in detail the composition of the crude Surakhani light oil with a complex composition. An accurate and comprehensive study of the composition of crude oils makes it easier to find the necessary field of application for them. For this purpose, the studied crude oil was separated into two fractions, such as paraffinic–naphthenic and aromatic (groups 1st, 2nd, 3rd and tar), by absorption column chromatography. The results show that Surakhani light oil is a paraffin–naphthene-based oil that contains 74% of paraffin–naphthene, 11.15% of aromatic hydrocarbons and 14.8% of gases. It has been shown that the aromatic group of compounds is mainly composed of mono- and bicyclic compounds and has alkyl chains with different lengths and branches (with the presence of methylene and methine groups). Based on the parameters of the structural group, it was found that the portion of H atoms in the aromatic nucleus and alkyl chain was 4.4–20.1% and 79.9–95.6%, respectively. The degree of aromaticity of the separated aromatic group is approximately 50%, which proves that these compounds are alkylated. The structure of the isolated paraffin–naphthene fraction has also been investigated by spectroscopic techniques, and it has been determined that this fraction is composed of iso- and cycloalkanes with alkyl chains of different lengths. As it is seen from the obtained results, unlike the other oils existing on the Absheron Peninsula, Surakhani light oil consists of one- and two-ring naphthene and isostructured paraffinic hydrocarbons. The composition of this petroleum mainly consists of isosubstituted alkyl cycloalkanes and relict, viz. biologically active hydrocarbons such as sterane and hopane used in medicine. It seems that the methodology developed for the petroleum industry can be used in other fields such as medicine. Graphical abstract

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以现代光谱技术研究苏拉哈尼轻质原油化合物为例

摘要:现代分析方法(FT-IR, NMR, GC-MS和UV/Vis)的复杂应用使我们能够详细研究具有复杂成分的苏拉哈尼原油轻质油的组成。对原油成分进行准确而全面的研究，可以更容易地为它们找到必要的应用领域。为此，采用吸收柱色谱法将所研究的原油分离成石蜡环烷基和芳烃(1、2、3和焦油)两个组分。结果表明，苏拉哈尼轻油为石蜡环烷基油，石蜡环烷含量为74%，芳烃含量为11.15%，气体含量为14.8%。结果表明，化合物的芳香基团主要由单环和双环化合物组成，并具有不同长度和分支的烷基链(亚甲基和甲基的存在)。根据结构基团的参数，发现H原子在芳核和烷基链中的比例分别为4.4-20.1%和79.9-95.6%。分离的芳基芳香度约为50%，证明这些化合物是烷基化的。分离的石蜡-环烷馏分的结构也用光谱技术进行了研究，确定了该馏分由不同长度的烷基链的异烷烃和环烷烃组成。从所得结果可以看出，与Absheron半岛上存在的其他石油不同，Surakhani轻油由一环和双环环烷烃和同构烷烃组成。该石油的组成主要由异取代烷基环烷烃和残馀物，即医学上使用的甾烷和藿烷等生物活性烃组成。看来，为石油工业开发的方法可以用于其他领域，如医药。图形抽象

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来源期刊

Journal of Petroleum Exploration and Production Technology Multiple-

CiteScore

5.90

自引率

4.50%

发文量

151

审稿时长

13 weeks

期刊介绍： The Journal of Petroleum Exploration and Production Technology is an international open access journal that publishes original and review articles as well as book reviews on leading edge studies in the field of petroleum engineering, petroleum geology and exploration geophysics and the implementation of related technologies to the development and management of oil and gas reservoirs from their discovery through their entire production cycle. Focusing on: Reservoir characterization and modeling Unconventional oil and gas reservoirs Geophysics: Acquisition and near surface Geophysics Modeling and Imaging Geophysics: Interpretation Geophysics: Processing Production Engineering Formation Evaluation Reservoir Management Petroleum Geology Enhanced Recovery Geomechanics Drilling Completions The Journal of Petroleum Exploration and Production Technology is committed to upholding the integrity of the scientific record. As a member of the Committee on Publication Ethics (COPE) the journal will follow the COPE guidelines on how to deal with potential acts of misconduct. Authors should refrain from misrepresenting research results which could damage the trust in the journal and ultimately the entire scientific endeavor. Maintaining integrity of the research and its presentation can be achieved by following the rules of good scientific practice as detailed here: https://www.springer.com/us/editorial-policies