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Energies
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Enhanced Oil and Gas Recovery from Conventional and Unconventional Reservoirs
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Enhanced Oil and Gas Recovery from Conventional and Unconventional Reservoirs

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

Deadline for manuscript submissions: closed (3 November 2023) | Viewed by 20848

Special Issue Editors

Dr. Roman V. Klyuev

E-Mail Website
Guest Editor
Moscow Polytechnic University, 38 B. Semenovskaya Str., Moscow 107023, Russia
Interests: metals extraction; renewable energy; quality of electrical energy; reliability of power supply; relay protection
Special Issues, Collections and Topics in MDPI journals
Dr. Nikita V. Martyushev

E-Mail Website
Guest Editor
Department of Advanced Technologies, Tomsk Polytechnic University, 634050 Tomsk, Russia
Interests: non ferrous alloys; 3D printing with metals and alloys; additive technologies; steel; teaching activities; modern learning technologies
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue is dedicated to methods and technologies for increasing oil and gas production from conventional and unconventional reservoirs.

The need for energy is one of the most pressing issues for the functioning and development of the industry. During times of crisis, there is a reduction in the cost of exploration of new oil and gas fields. In this regard, the issues of intensifying the extraction of resources and increasing the productivity of wells are extremely relevant. In this Special Issue, we aim to highlight the most pressing technical issues that are preventing oil and gas production from accelerating. Significant attention will be paid to the creation of new combined environmentally friendly and efficient technologies for intensifying oil production, which will provide an increase in the oil recovery factor, significant savings in material resources, and a reduction in the impact on the environment, including the diagnostics of oil and gas equipment and an increase in its operational reliability.

In this Special Issue we will also present a comparative analysis of existing technologies, and new technologies will be shown to increase the production of these resources.

Topics of interest for publication in this Special Issue include (but are not limited to):

  • Methods for increasing the oil and gas recovery factor during production from traditional and unconventional reservoirs;
  • Reservoir characteristics of traditional and unconventional deposits;
  • Geomechanical and drilling aspects of conventional and unconventional reservoirs;
  • Problems of hydraulic fracturing;
  • Increasing the economic efficiency of oil and gas production;
  • Rock: physical analysis of traditional and unconventional reservoirs;
  • Technologies stimulating oil and gas production;
  • Environmental problems and challenges associated with the intensification of oil and gas production;
  • Optimization of the management structure of the oil and gas complex;
  • Improving the operational reliability of oil and gas equipment.

Dr. Roman V. Klyuev
Dr. Nikita V. Martyushev
Guest Editors

Manuscript Submission Information

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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.

Keywords

  • oil production technology
  • gas production technology
  • optimization of the control structure, process reliability, equipment failures, equipment diagnostics
  • equipment for oil and gas complexes

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Published Papers (6 papers)

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Research

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16 pages, 3430 KiB  
Article
Substantiation of Drilling Parameters for Undermined Drainage Boreholes for Increasing Methane Production from Unconventional Coal-Gas Collectors
by Boris V. Malozyomov, Vladimir Ivanovich Golik, Vladimir Brigida, Vladislav V. Kukartsev, Yadviga A. Tynchenko, Andrey A. Boyko and Sergey V. Tynchenko
Energies 2023, 16(11), 4276; https://doi.org/10.3390/en16114276 - 23 May 2023
Cited by 69 | Viewed by 2252
Abstract
Decarbonization of the mining industry on the basis of closing the energy generation, on the basis of cogeneration of coal mine methane, and on the internal consumption of the mine is a promising direction in ensuring sustainable development. Known problems of deep underground [...] Read more.
Decarbonization of the mining industry on the basis of closing the energy generation, on the basis of cogeneration of coal mine methane, and on the internal consumption of the mine is a promising direction in ensuring sustainable development. Known problems of deep underground mining do not allow for realizing the potential of man-made gas reservoirs due to the deterioration of the conditions of development of reserves of georesources. The aim of the work was to improve recommendations for the substantiation of drilling parameters for undermined drainage boreholes for increasing methane production from unconventional coal-gas collectors. The authors’ approach innovation lies in the possibility of using the established patterns of better natural stability of undermined boreholes to optimize them as spatial orientation parameters in an existing drilling passport for the improvement of methane extraction productivity. For this purpose, smoothing (LOESS) of the experimental data of two similar types of wells was used; then deterministic interpolation methods in combination with a three-dimensional representation of the response function in “gnuplot” were used. As a result, it was found that the increase in the inclination angle from 40° to 60° leads to a significant transformation of the model of the studied process, accompanied by a decline in the dynamics of methane emission and a decrease in the distance of the productive work zone of this type of well from 13 to 5 m before the roof landing, which then is replaced by a sharp increase in the productive work zone up to 35 m ahead of the longwall face. This allows under specific conditions for recommending increasing the productivity of methane capex from technogenic disturbed coal-gas reservoir replacement of wells with a smaller angle of rise to the transition to a more frequent grid of clusters from wells #4. Full article
(This article belongs to the Special Issue Enhanced Oil and Gas Recovery from Conventional and Unconventional Reservoirs)
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16 pages, 5067 KiB  
Article
Pyrolysis of Oils from Unconventional Resources
by Burl Donaldson, Brian Hughes, Eric N. Coker and Nadir Yilmaz
Energies 2023, 16(8), 3455; https://doi.org/10.3390/en16083455 - 14 Apr 2023
Cited by 1 | Viewed by 1511
Abstract
In this study, oils from various sources were subjected to pyrolysis conditions; that is, without oxidizer, as the samples were heated to 500 °C, and held at that temperature. The oils studied included: (1) heavy oil from Grassy Creek, Missouri; (2) oil from [...] Read more.
In this study, oils from various sources were subjected to pyrolysis conditions; that is, without oxidizer, as the samples were heated to 500 °C, and held at that temperature. The oils studied included: (1) heavy oil from Grassy Creek, Missouri; (2) oil from tar sands of Asphalt Ridge in Utah; (3) mid-continent oil shales of three formations (two of Chattanooga formation, Pennsylvanian (age) formation, and Woodford formation); and (4) a Colorado Piceance Basin shale. Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) with either gas chromatography (GC) or mass spectrometry (MS) were used to quantify the produced gases evolved in the tests. Purge gases of helium, argon, and humid carbon dioxide were utilized. Larger scale pyrolysis tests were conducted in a tube furnace coupled to a MS and a GC. The results consistently showed that pyrolysis occurred between 300 °C and 500 °C, with the majority of gases being mainly hydrogen and light alkanes. This behavior was essentially consistent, regardless of the oil source. Full article
(This article belongs to the Special Issue Enhanced Oil and Gas Recovery from Conventional and Unconventional Reservoirs)
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15 pages, 3776 KiB  
Article
Study of Chelating Agent—Surfactant Interactions on the Interphase as Possibly Useful for the Well Stimulation
by Timur Ildarovich Yunusov, Lyutsia Faritovna Davletshina, Lyubov Abdulaevna Magadova and Mikhail Alexandrovich Silin
Energies 2023, 16(4), 1679; https://doi.org/10.3390/en16041679 - 8 Feb 2023
Cited by 3 | Viewed by 2590
Abstract
Chelating agents’ application for EOR and well stimulation is fast growing nowadays. However, reagents of this class have some drawbacks, with high values of interfacial tension (IFT) being among them. IFT may be lowered with the addition of surfactants; however, the simultaneous application [...] Read more.
Chelating agents’ application for EOR and well stimulation is fast growing nowadays. However, reagents of this class have some drawbacks, with high values of interfacial tension (IFT) being among them. IFT may be lowered with the addition of surfactants; however, the simultaneous application of chelating agents and surfactants has not yet been widely studied. This paper focuses on the experimental and theoretical investigation of the interaction between chelating agent (ethylenediaminetetraacetic acid, EDTA) and surfactants of anionic and cationic types (sodium dodecyl sulfate, SDS, and dodecyl trimethynlammonium bromide, DTAB). IFT measurement was performed at ambient conditions, with normal octane being as the reference hydrocarbon to eliminate the temperature and salinity effects and compare surfactant-containing systems. The experimental results show that chelating agents’ addition to the solutions of surfactants leads to a decrease in IFT value. Moreover, surfactants’ critical micelle concentration is lowered, whereas their effectiveness and efficiency are increased, which points to the salting-out nature of chelating agents. Molecular dynamics reveal that chelating agent addition causes closer packing of surfactant layer, the decrease in head groups’ hydration, and, at least in the case of SDS, specific surfactant–chelating agent attractive interaction. These molecular-level insights, experimental dependencies, and the combined methodology may be useful for the proper selection of fluids for real-field operations. Full article
(This article belongs to the Special Issue Enhanced Oil and Gas Recovery from Conventional and Unconventional Reservoirs)
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8 pages, 2208 KiB  
Article
Detailing the Pore Structure of Productive Intervals of Oil Wells Using the Color 3D Imaging
by Vladislav B. Zaalishvili, Adalat B. Hasanov, Elmeddin Y. Abbasov and Dildar N. Mammadova
Energies 2023, 16(1), 217; https://doi.org/10.3390/en16010217 - 25 Dec 2022
Cited by 4 | Viewed by 1292
Abstract
The article describes an approach to expanding the methodology for applying hydraulic fracturing in oil fields by adding the possibilities of 3D modeling with color imaging of the pore structure of the productive intervals of wells. As an applied example, the geological and [...] Read more.
The article describes an approach to expanding the methodology for applying hydraulic fracturing in oil fields by adding the possibilities of 3D modeling with color imaging of the pore structure of the productive intervals of wells. As an applied example, the geological and geophysical section of the productive level of one of the wells of the Moscudinskoye oil field, with known data on the integrated interpretation of the results of well-logging and microcomputer tomography, was chosen. According to well-logging data, the productive reservoir in the analyzed section of the section is characterized by a high degree of heterogeneity. Tomographic studies of a full-size core made it possible to identify four lithotypes here with different pore structure features. Accounting for the identified reservoir heterogeneity, as well as data on the thickness and other characteristics of reservoir properties of individual lithotypes that make up the section, made it possible to significantly increase the detail of the final geological model of the wellbore section. A distinctive feature of this final geological model is the use of the method of enlargement of the initial data array by adding intermediate values that were calculated theoretically. The visibility of the final geological model of the borehole walls is provided by color 3D imaging of the calculated data of the enlarged massif and makes it possible to judge the presence of areas with good and weak fluid conductivity on the lateral surface of the borehole walls. According to this model, intrastratal transverse and longitudinal fluid-conducting “corridors” are observed in the circumwell zone that determine the hydro-dynamic movements of natural and artificial fluids in the space of productive reservoirs. Full article
(This article belongs to the Special Issue Enhanced Oil and Gas Recovery from Conventional and Unconventional Reservoirs)
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11 pages, 5400 KiB  
Article
Geological Structure Features of Carbonate Formations and Their Impact on the Efficiency of Developing Hydrocarbon Deposits
by Vadim Aleksandrovich Grishchenko, Vyacheslav Sharifullovich Mukhametshin and Ruslan Uralovich Rabaev
Energies 2022, 15(23), 9002; https://doi.org/10.3390/en15239002 - 28 Nov 2022
Cited by 19 | Viewed by 1469
Abstract
The development of deposits with a complex geological structures is often accompanied by a set of problems associated with optimal decision making. The efficiency of the entire development system depends on the completeness and the quality of the analysis of reservoir parameters. This [...] Read more.
The development of deposits with a complex geological structures is often accompanied by a set of problems associated with optimal decision making. The efficiency of the entire development system depends on the completeness and the quality of the analysis of reservoir parameters. This paper presents methodological approaches for the study of carbonate deposits, and the development of further steps to increase the efficiency of reserve recovery. The secondary transformation of reservoir rocks, resulting in channels of increased conductivity, cracks, and caverns, plays a special role in the nature of the recovery of hydrocarbon reserves from such deposits. Secondary cavernosity leads to violations of the linear laws of fluid filtration in a porous medium, and complicates the field performance prediction based on geological and hydrodynamic modeling. The studied geological structure was detailed using the example of carbonate deposits composed of oil and water- saturated formations, taking into account the results of core studies and the interpretation of geophysical well studies. Furthermore, the parameters of production wells made it possible to confirm that the oil saturated and underlying water saturated formations have hydrodynamic connectivity due to the presence of vertical micro cracks. At the same time, the thickness of the bridge between the reservoirs directly affects the initial water cutting of well production, and further growth dynamics of the water ratio are associated with the structural factors determining the initial oil content of the reservoir. The combination of the obtained dependencies and the distribution model of the reservoir properties along the area made it possible to build a complex map reflecting the predicted development efficiency in certain areas. The integration of the results of various field studies on the injection well stock established that a significant part of the water flows was injected into the water saturated formation, which reduces the efficiency of formation pressure maintenance in the target formation. As a result, in order to reduce the low efficiency injection volume, switching to a more rigid waterflooding system, in terms of the ratio of production and injection wells, is proposed with a further decrease in the injection pressure inside the wells. Full article
(This article belongs to the Special Issue Enhanced Oil and Gas Recovery from Conventional and Unconventional Reservoirs)
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Review

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33 pages, 1827 KiB  
Review
Methods of Forecasting Electric Energy Consumption: A Literature Review
by Roman V. Klyuev, Irbek D. Morgoev, Angelika D. Morgoeva, Oksana A. Gavrina, Nikita V. Martyushev, Egor A. Efremenkov and Qi Mengxu
Energies 2022, 15(23), 8919; https://doi.org/10.3390/en15238919 - 25 Nov 2022
Cited by 78 | Viewed by 10778
Abstract
Balancing the production and consumption of electricity is an urgent task. Its implementation largely depends on the means and methods of planning electricity production. Forecasting is one of the planning tools since the availability of an accurate forecast is a mechanism for increasing [...] Read more.
Balancing the production and consumption of electricity is an urgent task. Its implementation largely depends on the means and methods of planning electricity production. Forecasting is one of the planning tools since the availability of an accurate forecast is a mechanism for increasing the validity of management decisions. This study provides an overview of the methods used to predict electricity supply requirements to different objects. The methods have been reviewed analytically, taking into account the forecast classification according to the anticipation period. In this way, the methods used in operative, short-term, medium-term, and long-term forecasting have been considered. Both classical and modern forecasting methods have been identified when forecasting electric energy consumption. Classical forecasting methods are based on the theory of regression and statistical analysis (regression, autoregressive models); probabilistic forecasting methods and modern forecasting methods use classical and deep-machine-learning algorithms, rank analysis methodology, fuzzy set theory, singular spectral analysis, wavelet transformations, Gray models, etc. Due to the need to take into account the specifics of each subject area characterizing an energy facility to obtain reliable forecast results, power consumption modeling remains an urgent task despite a wide variety of other methods. The review was conducted with an assessment of the methods according to the following criteria: labor intensity, requirements for the initial data set, scope of application, accuracy of the forecasting method, the possibility of application for other forecasting horizons. The above classification of methods according to the anticipation period allows highlights the fact that when predicting power consumption for different time intervals, the same methods are often used. Therefore, it is worth emphasizing the importance of classifying the forecast over the forecasting horizon not to differentiate the methods used to predict electricity consumption for each period but to consider the specifics of each type of forecasting (operative, short-term, medium-term, long-term). Full article
(This article belongs to the Special Issue Enhanced Oil and Gas Recovery from Conventional and Unconventional Reservoirs)
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