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New Technologies and Theories Applied in Oil and Gas Development Under Complex Conditions

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Earth Sciences".

Deadline for manuscript submissions: 20 June 2025 | Viewed by 1485

Special Issue Editors

School of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
Interests: well control; well integrity; well cleaning; gas hydrate

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Guest Editor
College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
Interests: drilling and completion technology in deep or deep-water wells; safety of oil and gas wells; petroleum machinery
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The advancement of new engineering scenarios has led to the creation of more complex conditions for oil and gas development, including ultra-deep formation, underground gas storage, tight/shale gas and oil, gas hydrate, CCUS, etc. These conditions have caused many serious accidents and engineering problems, such as gas invasion, casing/tubing strength failure, geologic hazards and well integrity failure. Therefore, it is necessary to innovate new technologies and theories for complex conditions and service environments.

The aim of this Special Issue is to collect original research, case studies or review articles on the latest theories and technologies related to oil and gas development under complex conditions, thus narrowing the gap between theoretical studies and engineering applications. Potential topics include, but are not limited to, the following:

  • Well structure optimization design;
  • Well control in complex formation;
  • Well integrity evaluation, detection and mitigation;
  • Drilling technologies and equipment to increase ROP;
  • Methods for the further enhancement of oil and gas recovery;
  • AI and big data applied in oil and gas development;
  • Wellbore cleaning in long horizontal well and large-size wellbore;
  • New materials applied in drilling, fracturing, production and cement;
  • The optimization of well construction for underground energy or CO2 storage.

Dr. Bo Zhang
Dr. Tengfei Sun
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. Applied Sciences 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 2400 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

  • well structure optimization design
  • well control in complex formation
  • well integrity evaluation, detection and mitigation
  • drilling technologies and equipment to increase ROP
  • methods for the further enhancement of oil and gas recovery
  • AI and big data applied in oil and gas development
  • wellbore cleaning in long horizontal well and large-size wellbore
  • new materials applied in drilling, fracturing, production and cement
  • the optimization of well construction for underground energy or CO2 storage

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Published Papers (3 papers)

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Research

19 pages, 9805 KiB  
Article
Numerical Simulation of Rock-Breaking Mechanism by Spherical Tooth Impact in Granite Formation
by Jing Zhou, Kunkun Li, Hao Wu, Yuan Dong and Bairu Xia
Appl. Sci. 2025, 15(7), 3649; https://doi.org/10.3390/app15073649 - 26 Mar 2025
Viewed by 219
Abstract
With the increasing depth of mining operations and the emergence of complex geological conditions, pneumatic down-the-hole (DTH) hammers have become an efficient drilling technology. This method utilizes high-pressure air to drive hammering actions for rock fragmentation. However, the layout and durability of tungsten [...] Read more.
With the increasing depth of mining operations and the emergence of complex geological conditions, pneumatic down-the-hole (DTH) hammers have become an efficient drilling technology. This method utilizes high-pressure air to drive hammering actions for rock fragmentation. However, the layout and durability of tungsten carbide buttons significantly affect the rate of penetration (ROP). This study focuses on optimizing the button arrangement for large-diameter reverse circulation pneumatic DTH hammers to improve drilling efficiency. A numerical model incorporating zero-thickness cohesive elements was developed to simulate rock fracturing. A comparative analysis of 16 mm and 22 mm buttons under varying drilling pressures (1–1.8 kN) and impact energies (20–40 J) was conducted. Key metrics, including penetration depth, fragmentation range, stress-affected zone, and specific energy consumption, were analyzed. The results indicate that 22 mm buttons under 35 J impact energy and 1.4 kN drilling pressure exhibit superior performance, with optimal circumferential (47.2 mm) and radial (51.2 mm) spacing determined through stress superposition analysis. This configuration enhances the weakened rock strength zone, providing critical guidance for DTH hammer design. Full article
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22 pages, 35452 KiB  
Article
Denudation Recovery and Prototype Basin Structural Pattern During the Faulting Period in the Southern Part of the Central Depression Area of the Songliao Basin
by Jiachang Zhang, Tao Li, Jia Hu, Hui Wang, Tong Yue, Jiayu Liu and Yuxun Cai
Appl. Sci. 2025, 15(6), 3149; https://doi.org/10.3390/app15063149 - 13 Mar 2025
Viewed by 459
Abstract
The Changling Depression, located in the southern part of the central depression zone of the Songliao Basin, is characterized by complex structures and has been shaped by multiple phases of tectonic activity. The strata in this region have undergone significant uplift and denudation, [...] Read more.
The Changling Depression, located in the southern part of the central depression zone of the Songliao Basin, is characterized by complex structures and has been shaped by multiple phases of tectonic activity. The strata in this region have undergone significant uplift and denudation, resulting in an incomplete understanding of the prototype basin and hindering progress in oil and gas exploration. To better understand the geological characteristics and exploration potential of the Changling Depression, this study begins with the reconstruction of denudation amounts. Using the stratigraphic trend extrapolation method, the denudation of strata during the faulting period of the Changling Depression is quantified. By combining the denudation thickness with the remaining strata thickness, the original strata thickness is restored. Employing MOVE 2018version and Petrel 2021version software, the paleogeomorphology of different geological periods is reconstructed. Through an analysis of the prototype basin’s structure, its evolution history, sedimentary filling patterns, and paleogeomorphological features, it is determined that the maximum depositional thickness and rate during the Huoshiling period occurred in the Shenzijing, Heidimiao, and Fulongquan areas, with strong central deposition that weakened toward the north and south. During the Shahezi period, depositional thickness and rates exhibited a pattern of weaker deposition in the south and stronger in the north. In the Yingcheng Formation–Denglouku Formation period, the basin entered a subsidence phase, with an expanded range of strata subsidence. During the Denglouku period, the Qianbei area experienced strong deposition, while the Heidimiao area saw even more pronounced deposition; in contrast, the Shenzijing area displayed very weak depositional activity. The study reveals a south-to-north migration of lateral subsidence centers over time, influenced by left-lateral tectonic forces, reflecting a shift in the dominant influence pattern. These findings clarify the morphology of the prototype basin and the distribution and migration of subsidence centers across different periods, providing valuable insights that will facilitate deeper oil and gas exploration efforts in the Changling Depression. Full article
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22 pages, 5719 KiB  
Article
A Multiscale Compositional Numerical Study in Tight Oil Reservoir: Incorporating Capillary Forces in Phase Behavior Calculation
by Junqiang Wang, Li Wu, Qian Sun, Ruichao Zhang, Wenbin Chen, Haitong Yang and Shuoliang Wang
Appl. Sci. 2025, 15(6), 3082; https://doi.org/10.3390/app15063082 - 12 Mar 2025
Viewed by 431
Abstract
Tight oil reservoirs offer significant development potential. Due to the pronounced capillary forces in their nanopores, phase behavior differs markedly from that in conventional reservoirs, challenging traditional equations of state and numerical simulation methods. This paper presents a multiscale compositional numerical simulation method [...] Read more.
Tight oil reservoirs offer significant development potential. Due to the pronounced capillary forces in their nanopores, phase behavior differs markedly from that in conventional reservoirs, challenging traditional equations of state and numerical simulation methods. This paper presents a multiscale compositional numerical simulation method that incorporates capillary forces, leveraging the parallel advantages of the multiscale finite volume method. The approach decouples the compositional model using a sequential format to derive pressure and transport equations, then solves the pressure equation iteratively in a multiscale format to enhance computational efficiency. Results show that the proposed method significantly improves simulation speed while maintaining accuracy. By considering capillary forces in phase equilibrium calculations, this model effectively characterizes phase behavior in tight oil reservoir development, making it highly relevant for Pressure Volume Temperature (PVT) simulation, development simulation, and forecasting development strategies. Full article
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