Most recent issue published online in the International Journal of Oil, Gas and Coal Technology.
International Journal of Oil, Gas and Coal Technology
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International Journal of Oil, Gas and Coal Technology
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http://www.inderscience.com/browse/index.php?journalID=242&year=2024&vol=35&issue=2
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Metal naphthenate precipitation modelling framework
http://www.inderscience.com/link.php?id=136545
One of the important challenges faced during production, transport and processing of acidic crude is metal naphthenate formation and subsequent flow assurance issues. But currently there are no commercial simulation tools available to determine the risk of naphthenate precipitation over the life cycle for an asset. The objective of our paper is to propose a thermodynamic modelling approach to predict metal naphthenate occurrence in real crude oil system at field condition. Modelling considerations and framework details are presented. The algorithms are then used to predict naphthenic acid salts' occurrences and magnitude, for impact on emulsion stability and scaling tendency. A field example of metal naphthenate formation modelling is showcased in a real crude oil system for the first time in literature. The modelling result matches field observation. This model can be used for providing guidance to workflows involving metal naphthenate formation and help prevent or mitigate the issue. [Received: February 24, 2023; Accepted: July 5, 2023]
Metal naphthenate precipitation modelling framework
Sai R. Panuganti; Caleb J. Sisco; Ivy Chai C. Hsia; Noorazlenawati Borhan; Marya Cokar
International Journal of Oil, Gas and Coal Technology, Vol. 35, No. 2 (2024) pp. 117 - 135
One of the important challenges faced during production, transport and processing of acidic crude is metal naphthenate formation and subsequent flow assurance issues. But currently there are no commercial simulation tools available to determine the risk of naphthenate precipitation over the life cycle for an asset. The objective of our paper is to propose a thermodynamic modelling approach to predict metal naphthenate occurrence in real crude oil system at field condition. Modelling considerations and framework details are presented. The algorithms are then used to predict naphthenic acid salts' occurrences and magnitude, for impact on emulsion stability and scaling tendency. A field example of metal naphthenate formation modelling is showcased in a real crude oil system for the first time in literature. The modelling result matches field observation. This model can be used for providing guidance to workflows involving metal naphthenate formation and help prevent or mitigate the issue. [Received: February 24, 2023; Accepted: July 5, 2023]]]>
10.1504/IJOGCT.2024.136545
International Journal of Oil, Gas and Coal Technology, Vol. 35, No. 2 (2024) pp. 117 - 135
Sai R. Panuganti
Caleb J. Sisco
Ivy Chai C. Hsia
Noorazlenawati Borhan
Marya Cokar
Petroliam Nasional Berhad (PETRONAS), KLCC, Kuala Lumpur, Malaysia ' ENNOVA LLC, Greenbriar Dr., Stafford, Texas, USA ' Petroliam Nasional Berhad (PETRONAS), KLCC, Kuala Lumpur, Malaysia ' Petroliam Nasional Berhad (PETRONAS), KLCC, Kuala Lumpur, Malaysia ' ENNOVA LLC, Greenbriar Dr., Stafford, Texas, USA
naphthenate
flow assurance
precipitation
thermodynamic
modelling
framework
crude oil
field
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135
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Sequential thermal dissolution and oxidative depolymerisation of Cheji coal
http://www.inderscience.com/link.php?id=136543
Organic matter in soft coal (SC) and hard coal (HC) from the same mine was extracted by sequential thermal dissolution (TD) followed by oxidative depolymerisation (OD) to obtain soluble components, which were studied using both gas chromatography/mass spectrometry (GC/MS) and Orbitrap-MS to acquire detailed molecular structure information. Toluene (TOL), tetrahydrofuran (THF), and methanol (ME) were the three solvents used in sequential TD. TOL relaxes the macromolecular structure in coals and exhibits a good solubilisation effect on arenes, THF further destroys non-covalent bonds through swelling, and ME weakens hydrogen bonds among macromolecules and attacks the weak -C-O- bridged bonds. With a higher coalification degree, soluble components from HC show more aromatised structure compared to SC. After the OD treatment, aromatic compounds with a higher degree of condensation were detected in the OD products, and HC contains more fused aromatic rings. [Received: 13 March 2023; Accepted: 28 August 2023]
Sequential thermal dissolution and oxidative depolymerisation of Cheji coal
Wen-Han Wei; Xiang Bai; Xing Fan; Zhen-Yu Gao; Ran-Ran Hou; Guo-Ming Zhao; Qing Liu; Hai-Feng Zhou; Peng Liang
International Journal of Oil, Gas and Coal Technology, Vol. 35, No. 2 (2024) pp. 136 - 158
Organic matter in soft coal (SC) and hard coal (HC) from the same mine was extracted by sequential thermal dissolution (TD) followed by oxidative depolymerisation (OD) to obtain soluble components, which were studied using both gas chromatography/mass spectrometry (GC/MS) and Orbitrap-MS to acquire detailed molecular structure information. Toluene (TOL), tetrahydrofuran (THF), and methanol (ME) were the three solvents used in sequential TD. TOL relaxes the macromolecular structure in coals and exhibits a good solubilisation effect on arenes, THF further destroys non-covalent bonds through swelling, and ME weakens hydrogen bonds among macromolecules and attacks the weak -C-O- bridged bonds. With a higher coalification degree, soluble components from HC show more aromatised structure compared to SC. After the OD treatment, aromatic compounds with a higher degree of condensation were detected in the OD products, and HC contains more fused aromatic rings. [Received: 13 March 2023; Accepted: 28 August 2023]]]>
10.1504/IJOGCT.2024.136543
International Journal of Oil, Gas and Coal Technology, Vol. 35, No. 2 (2024) pp. 136 - 158
Wen-Han Wei
Xiang Bai
Xing Fan
Zhen-Yu Gao
Ran-Ran Hou
Guo-Ming Zhao
Qing Liu
Hai-Feng Zhou
Peng Liang
College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China ' Key Laboratory of Chemistry and Chemical Engineering on Heavy Carbon Resources of Yili Kazakh Autonomous Prefecture, Yili Normal University, Yining, Xinjiang 835000, China ' College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China; Key Laboratory of Chemistry and Chemical Engineering on Heavy Carbon Resources of Yili Kazakh Autonomous Prefecture, Yili Normal University, Yining, Xinjiang 835000, China; State Key Laboratory of Coal Mining and Clean Utilization, Beijing 100013, China ' College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China ' College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China ' College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China ' College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China ' College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China ' College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China
sequential thermal dissolution
oxidative depolymerisation
Orbitrap-MS
coal
2024-02-06T23:20:50-05:00
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The maximum installation depth for a pre-drilled liner with floating inner tubing in horizontal well in tectonically deformed coal seams
http://www.inderscience.com/link.php?id=136542
A horizontal completion technology of outer liner with inner tubing has been proposed to solve the problems of wellbore collapse, friction resistance and sticking in tectonically deformed coal seams. However, there is no study on the maximum installation depth of this dual-pipe structure. First, a hydraulic model of dual annulus is established to calculate the hydraulic parameters and interpret the influencing factors. Second, a quantitative prediction model of maximum installation depth for the pre-drilled liner with floating inner tubing (PL&FIT) is deduced by coupling mechanics and hydraulics. At last, a horizontal well is taken to calculated the installation depth of PL&FIT by finite difference method. The results indicate that the maximum installation depth of the PL&FIT adopts maximum reach limited by mechanics or hydraulics, which depends on the dual annulus equivalent diameter ratio (<i>λ</i>). The maximum reach envelope is deduced for the PL&FIT. [Received: 28 October 2022; Accepted: 2 September 2023]
The maximum installation depth for a pre-drilled liner with floating inner tubing in horizontal well in tectonically deformed coal seams
Yansen Bi; Deli Gao; Baoan Xian
International Journal of Oil, Gas and Coal Technology, Vol. 35, No. 2 (2024) pp. 159 - 181
A horizontal completion technology of outer liner with inner tubing has been proposed to solve the problems of wellbore collapse, friction resistance and sticking in tectonically deformed coal seams. However, there is no study on the maximum installation depth of this dual-pipe structure. First, a hydraulic model of dual annulus is established to calculate the hydraulic parameters and interpret the influencing factors. Second, a quantitative prediction model of maximum installation depth for the pre-drilled liner with floating inner tubing (PL&FIT) is deduced by coupling mechanics and hydraulics. At last, a horizontal well is taken to calculated the installation depth of PL&FIT by finite difference method. The results indicate that the maximum installation depth of the PL&FIT adopts maximum reach limited by mechanics or hydraulics, which depends on the dual annulus equivalent diameter ratio (<i>λ</i>). The maximum reach envelope is deduced for the PL&FIT. [Received: 28 October 2022; Accepted: 2 September 2023]]]>
10.1504/IJOGCT.2024.136542
International Journal of Oil, Gas and Coal Technology, Vol. 35, No. 2 (2024) pp. 159 - 181
Yansen Bi
Deli Gao
Baoan Xian
MOE Key Laboratory of Petroleum Engineering, China University of Petroleum, Beijing, No. 18, Fuxue Road, Changping District, Beijing, China ' MOE Key Laboratory of Petroleum Engineering, China University of Petroleum, Beijing, No. 18, Fuxue Road, Changping District, Beijing, China ' Institute of Resource & Environment, Henan Polytechnic University, No. 2001, Shiji Road, Shanyang District, Jiaozuo, China
CBM
horizontal well
dual-pipe structure
tubing floating
liner installation depth limit
2024-02-06T23:20:50-05:00
Copyright © 2024 Inderscience Enterprises Ltd.
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Influence of small organic molecules on methane adsorption on coal: a molecular simulation study
http://www.inderscience.com/link.php?id=136544
To explore the influence mechanism of small organic molecules on coal adsorptions of methane, the effects of small molecular composition and content on the adsorption of methane by coal were studied by molecular simulation method, and the mechanism of the effect of small molecules on the adsorption of methane by coal was clarified. The results show that the adsorption of methane by coal varies with the change of small molecular weight. When small molecules interact with methane, the interaction energy between methane and toluene is the highest, which is 4.96 kJ/mol. There are two main effects of small molecules on methane adsorption in coal. On the one hand, the presence of small molecules changes the pore structure of coal and affects the adsorption capacity of coal. On the other hand, the interaction between small molecules and methane changes the charge of methane and the force between methane and coal. [Received: April 25, 2023; Accepted: August 17, 2023]
Influence of small organic molecules on methane adsorption on coal: a molecular simulation study
Ju Liu; Huaijun Ji; Xianqi Peng; Yingnan Mao; Zebin Wang
International Journal of Oil, Gas and Coal Technology, Vol. 35, No. 2 (2024) pp. 182 - 204
To explore the influence mechanism of small organic molecules on coal adsorptions of methane, the effects of small molecular composition and content on the adsorption of methane by coal were studied by molecular simulation method, and the mechanism of the effect of small molecules on the adsorption of methane by coal was clarified. The results show that the adsorption of methane by coal varies with the change of small molecular weight. When small molecules interact with methane, the interaction energy between methane and toluene is the highest, which is 4.96 kJ/mol. There are two main effects of small molecules on methane adsorption in coal. On the one hand, the presence of small molecules changes the pore structure of coal and affects the adsorption capacity of coal. On the other hand, the interaction between small molecules and methane changes the charge of methane and the force between methane and coal. [Received: April 25, 2023; Accepted: August 17, 2023]]]>
10.1504/IJOGCT.2024.136544
International Journal of Oil, Gas and Coal Technology, Vol. 35, No. 2 (2024) pp. 182 - 204
Ju Liu
Huaijun Ji
Xianqi Peng
Yingnan Mao
Zebin Wang
School of Engineering and Technology, China University of Geosciences (Beijing), Beijing 100083, China; Consulting Center, China National Coal Association, Beijing 100083, China ' School of Engineering and Technology, China University of Geosciences (Beijing), Beijing 100083, China; Key Laboratory of Deep Geodrilling Technology, Ministry of Land and Resources, China University of Geosciences (Beijing), Beijing 100083, China ' School of Engineering and Technology, China University of Geosciences (Beijing), Beijing 100083, China ' School of Engineering and Technology, China University of Geosciences (Beijing), Beijing 100083, China ' School of Engineering and Technology, China University of Geosciences (Beijing), Beijing 100083, China
molecular simulation
small organic molecules
methane
adsorption
interaction energy
2024-02-06T23:20:50-05:00
Copyright © 2024 Inderscience Enterprises Ltd.
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204
2024-02-06T23:20:50-05:00
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Effect of COVID-19 crisis on crude oil price and the world economy - a state-of-art review
http://www.inderscience.com/link.php?id=136546
Fluctuating oil prices have profound implications on the economies of oil-exporting nations and the global economy. A historic oil price crash from $18 to -$38/barrel occurred in April 2020 during the global COVID-19 pandemic and negative oil prices were observed. This study explores the drivers of oil price fluctuations including geopolitical factors, environmental concerns, clean energy initiatives, and surplus oil supply. It also delves into the transformative influence of the COVID-19 crisis on oil prices and the global economy. The study emphasises the future of oil prices and industry efforts to recover the oil market while offering insights into potential long-term solutions for stable petroleum prices. This research sheds light on the significant impact of COVID-19 on the energy market and various aspects of daily life, paving the way for discussions on remedial actions to stabilise oil prices and the world economy in the context of the COVID-19 pandemic. [Received: November 22, 2022; Accepted: July 16, 2023]
Effect of COVID-19 crisis on crude oil price and the world economy - a state-of-art review
Shubham Saraf; Achinta Bera
International Journal of Oil, Gas and Coal Technology, Vol. 35, No. 2 (2024) pp. 205 - 240
Fluctuating oil prices have profound implications on the economies of oil-exporting nations and the global economy. A historic oil price crash from $18 to -$38/barrel occurred in April 2020 during the global COVID-19 pandemic and negative oil prices were observed. This study explores the drivers of oil price fluctuations including geopolitical factors, environmental concerns, clean energy initiatives, and surplus oil supply. It also delves into the transformative influence of the COVID-19 crisis on oil prices and the global economy. The study emphasises the future of oil prices and industry efforts to recover the oil market while offering insights into potential long-term solutions for stable petroleum prices. This research sheds light on the significant impact of COVID-19 on the energy market and various aspects of daily life, paving the way for discussions on remedial actions to stabilise oil prices and the world economy in the context of the COVID-19 pandemic. [Received: November 22, 2022; Accepted: July 16, 2023]]]>
10.1504/IJOGCT.2024.136546
International Journal of Oil, Gas and Coal Technology, Vol. 35, No. 2 (2024) pp. 205 - 240
Shubham Saraf
Achinta Bera
Department of Petroleum Engineering, School of Energy Technology, Pandit Deendayal Energy University, Gandhinagar, Gujarat-382426, India ' Department of Petroleum Engineering, School of Energy Technology, Pandit Deendayal Energy University, Gandhinagar, Gujarat-382426, India
crude oil
negative oil price
geopolitical issues
COVID-19
global economy
future of oil price
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Copyright © 2024 Inderscience Enterprises Ltd.
35
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205
240
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