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Deep Well Drilling and Sustainable Practices in Petroleum Engineering

A special issue of Applied Sciences (ISSN 2076-3417).

Deadline for manuscript submissions: 20 February 2026 | Viewed by 1532

Special Issue Editors


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Guest Editor
Faculty of Mining, Geology and Petroleum Engineering, University of Zagreb, 10000 Zagreb, Croatia
Interests: drilling technology; drilling fluids; environmental protection; waste management; well control
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Faculty of Mining, Geology and Petroleum Engineering, University of Zagreb, 10000 Zagreb, Croatia
Interests: drilling technology; well cementing; drilling and completion fluids; environmental protection in petroleum engineering; waste management; deep well waste injection
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Deep well drilling represents one of the most technically demanding and resource-intensive operations in petroleum engineering. As drilling activities extend into deeper and more geologically complex formations, challenges related to pressure control, temperature resistance, wellbore stability, and environmental impact continue to grow. These complexities highlight the need for innovative and sustainable approaches that can improve the efficiency, safety, and environmental footprint of drilling operations. Recent research and industrial efforts have increasingly focused on implementing sustainable practices in well drilling—ranging from the development of energy-efficient technologies to the use of environmentally friendly materials and closed-loop systems that reduce waste and emissions. Additionally, digital solutions such as real-time monitoring, automation, and predictive analytics are proving essential for optimizing operations and minimizing risk.

This Special Issue invites researchers and professionals to submit original research papers and comprehensive reviews that explore recent advancements in the field of deep well drilling, particularly those that incorporate sustainable and responsible engineering practices. Contributions related to other well operations, such as well completion, workover, and stimulation—especially when approached from a sustainability perspective—are also welcome. Preferred topics include, but are not limited to: advanced drilling technologies, wellbore stability, sustainable materials, energy-efficient equipment, digitalization and automation, CO2 footprint reduction, waste minimization, well integrity, environmental risk management, regulatory approaches and others.

We look forward to your valuable contributions that will help shape a more sustainable future for petroleum engineering.

Dr. Petar Mijić
Prof. Dr. Nediljka Gaurina-Međimurec
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 250 words) can be sent to the Editorial Office for assessment.

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

  • deep well drilling
  • sustainable petroleum engineering
  • environmental impact
  • wellbore stability
  • energy-efficient technologies
  • biodegradable materials
  • digitalization in drilling
  • waste minimization
  • advanced drilling technologies
  • CO2 emissions reduction

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Published Papers (1 paper)

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Research

20 pages, 4242 KB  
Article
Regulation and Stabilization of Rheological Parameters in Bentonite-Based Drilling Fluids with Ground Mandarin Peel Waste
by Krzysztof Skrzypaszek, Przemysław Toczek, Tomasz Kowalski, Borivoje Pašić, Igor Medved and Petar Mijić
Appl. Sci. 2025, 15(18), 10260; https://doi.org/10.3390/app151810260 - 20 Sep 2025
Viewed by 1191
Abstract
This study evaluates ground mandarin peel (MP) as a low-cost modifier for sodium-bentonite water-based drilling fluids. Formulations with 2% (w/w) MP and 1–4% bentonite were prepared to locate the composition break point using segmented regression with the Davies test; [...] Read more.
This study evaluates ground mandarin peel (MP) as a low-cost modifier for sodium-bentonite water-based drilling fluids. Formulations with 2% (w/w) MP and 1–4% bentonite were prepared to locate the composition break point using segmented regression with the Davies test; the threshold was 2.5% bentonite (B/MP ≈ 1.25). Below this level, yield stress drops sharply, and American Petroleum Institute (API) fluid loss increases nonlinearly. Two 3% bentonite muds were then compared: a polymer-stabilized reference (0.3% xanthan gum (XCD), 1% low-viscosity carboxymethyl cellulose (CMC LV), 1% modified starch) and the same package plus 2% MP. Twelve-speed rheometry and API tests showed that adding MP left plastic viscosity essentially unchanged, increased yield stress to ~3.4 Pa, reduced API fluid loss from 9 to 5.5 mL per 30 min, and thinned the filter cake from 0.30 to 0.10 mm. Because MP is a zero-price waste stream, material cost remained essentially unchanged while performance improved. These results support a practical dosing window for MP and a polymer adjustment pathway; high temperature and high-salinity stability require further verification. Full article
(This article belongs to the Special Issue Deep Well Drilling and Sustainable Practices in Petroleum Engineering)
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