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Advances in Natural Gas Engineering II

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A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "H: Geo-Energy".

Deadline for manuscript submissions: closed (31 May 2023) | Viewed by 4034

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Prof. Dr. Stanislaw Nagy

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Gas Engineering Department, Faculty of Drilling, Oil and Gas, AGH University of Science and Technology, 30-059 Kraków, Poland
Interests: natural gas engineering; unconventional gas; applied thermodynamics; renewable energy; reservoir engineering and simulation; carbon sequestration; phase behavior; geothermal systems and resources; sustainable geothermal resources
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Dr. Łukasz Klimkowski

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Guest Editor

Gas Engineering Department, Faculty of Drilling, Oil and Gas, AGH University of Science and Technology, 30-059 Kraków, Poland
Interests: natural gas engineering; unconventional gas; applied thermodynamics; renewable energy; reservoir engineering and simulation; carbon sequestration; phase behavior
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We solicit articles from a wide range of scientific disciplines focused on new advances in natural gas engineering. Decarbonization and the transition of the economy to a neutral and low-emission model in the next few decades indicate that natural gas will play an important role in the near future. We observe an increasing demand for natural gas and LNG for the substitution processes in the power generation sector based upon lignite and hard coal. Natural gas is complementary to renewable energy in those areas where renewable sources cannot be effectively applied. Given the rapid increase in the greenhouse effect and global warming, we all should make efforts to diversify energy sources.

In this Special Issue of Energies, we would like to present papers on the natural gas chain process: gas exploration, production, processing, and transmission. We also seek key review papers from renowned experts in the industry and academia.

We call for theoretical and empirical papers that focus on one or more of the following topics:

natural gas/hydrocarbon reservoir classification;
natural/unconventional gas resources and exploration;
natural gas drilling and completion technologies;
natural gas reservoir stimulation;
natural gas reservoir modeling and simulation;
rock mechanics in gas reservoirs;
natural gas reservoir production and management;
enhanced gas recovery and CO₂/flue gas injection;
coal bed methane technologies;
gas hydrates and extraction;
natural gas processing and plant optimization;
phase behavior aspects of wet and retrograde gases;
LNG technology and LNG supply;
biomethane/biogas and hydrogen production (‘energy’ gas);
natural gas and hydrogen/natural gas pipelines, transportation, and distribution;
underground gas and energy storage;
carbon capture, utilization, and sequestration;
natural gas markets;
natural gas and ‘energy’ gas utilization;
natural gas risks, safety, and security; and
environmental aspects of the use of natural gas.

Prof. Dr. Stanislaw Nagy
Dr. Łukasz Klimkowski
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

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19 pages, 9122 KiB

Open AccessFeature PaperArticle

Numerical Simulation Study on Underground Gas Storage with Cushion Gas Partially Replaced with Carbon Dioxide

by Jan Kowalski, Lukasz Klimkowski and Stanislaw Nagy

Energies 2023, 16(14), 5248; https://doi.org/10.3390/en16145248 - 08 Jul 2023

Cited by 1 | Viewed by 1442

Abstract

Carbon dioxide capture, use, and storage (CCUS) issues are currently gaining more attention due to climate change. One of the CCUS methods may be the use of

C O_{2}

as cushion gas in underground gas storage (UGS). Typically, high-permeability structures are preferable [...] Read more.

Carbon dioxide capture, use, and storage (CCUS) issues are currently gaining more attention due to climate change. One of the CCUS methods may be the use of

C O_{2}

as cushion gas in underground gas storage (UGS). Typically, high-permeability structures are preferable for gas storage purposes. High permeability ensures good flow in reservoirs and well bottom-hole pressure maintenance. However, in the case of the use of

C O_{2}

as a part of the cushion gas, it mixes with natural gas within the reservoir pore space, and high permeability, with the resulting “ease of flow”, can accelerate the migration of

C O_{2}

to the near-well zone. For this reason, the analysis of the effect of permeability on

C O_{2}

content in withdrawal gas and the overall performance of UGS seems to be of high importance. In this study, we used a compositional numerical simulator to evaluate the effects of not only permeability but also pore structure on gas storage of this type. The simulations covered depletion of the reservoir and 10 cycles of UGS operation. Our results show that the structure (and thus permeability) has a great influence on the migration of

C O_{2}

within a reservoir, the mixing zone, and

C O_{2}

content in withdrawal gas. Full article

(This article belongs to the Special Issue Advances in Natural Gas Engineering II)

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19 pages, 1549 KiB

Open AccessArticle

Use of a New Gas Ejector for a TEG/TREG Natural Gas Dehydration System

by Marcin Bernat, Stanisław Nagy and Rafał Smulski

Energies 2023, 16(13), 5011; https://doi.org/10.3390/en16135011 - 28 Jun 2023

Viewed by 1213

Abstract

Glycol dehydration is the most common and economical water removal method from natural gas streams. However, dehydration of low-pressure natural gas requires the use of higher concentration TEG (Triethylene Glycol) or TREG (Tetraethylene Glycol). This article describes how the ejector can be used to create a vacuum in the glycol reboiler to achieve a higher concentration of L-TEG/L-TREG (Lean Triethylene Glycol/Lean Tetraethylene Glycol). Process simulations of the gas dehydration and glycol regeneration units were carried out in Chemcad software. Simulations were performed for decreasing values of gas working pressure and TEG/TREG regeneration pressures. Dehydration unit efficiency was tested for two values of glycol flow rates. Ejector performance simulations were executed for two positions in the process flow line. The influence of pressure reduction in the glycol reboiler on the concentration of L-TEG/L-TREG and the water dewpoint of natural gas has to be found significant. The increase in glycol flow rate has a greater impact on TREG than for TEG. Creating a vacuum with an ejector in a TEG/TREG reboiler has been shown to be an attractive way to improve the efficiency of natural gas dehydration. The position of the ejector at the end of the vapor flow line, downstream to the condensed water separator, allows for a significant reduction in motive gas consumption. Full article

(This article belongs to the Special Issue Advances in Natural Gas Engineering II)

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14 pages, 2564 KiB

Open AccessArticle

Precipitation of Barium Sulphate during the Waterflooding Process in Polish Offshore Oilfields—Case Analysis

by Michał Gruszka and Stanisław Nagy

Energies 2023, 16(8), 3345; https://doi.org/10.3390/en16083345 - 10 Apr 2023

Viewed by 1113

Abstract

The fundamentals of scaling during waterflooding of an oilfield are presented. Mineral precipitation is described using both the kinetics approach, with the corresponding equations given, and the thermodynamic models’ theoretical foundation discussed—mainly specific ion interaction and Pitzer models. This paper focuses on the process of mixing incompatible waters during both water injection and production from an oilfield, as this was identified as a primary reason for barium sulphate precipitation. Two methods of minimizing the risk of solid phase deposition during the mixing of water using the addition of inhibitors and removal of sulfur compounds through a membrane system before water injection into the bed are shown. In addition, formation damage to the near-well zone is discussed with its implications for field operators. Using thermodynamics, especially equations based on the HKF-SRK modified model, this paper describes typical conditions for barium sulphate precipitation during hydrocarbon production on a Polish offshore oilfield. The case study is presented using scaling tendency (ST) and solid concentration values to distinguish the most vulnerable places of solid deposition, both topside and subsurface. The importance of avoiding the mixing of incompatible waters is documented and shown in comparison to a non-mixing scenario. Full article

(This article belongs to the Special Issue Advances in Natural Gas Engineering II)

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