
AMM (ABANDONED METHANE MINE) TECHNIQUES APPLICABLE TO MINING OPERATIONS DURING THE CLOSING OF THE JIU VALLEY
(STEF92 Technology, 2026, Cornel Boanta, Doru Cioclea, Florin Radoi, Cristian Cioara)
Now showing 1 - 50 of 90

(STEF92 Technology, 2026, Cornel Boanta, Doru Cioclea, Florin Radoi, Cristian Cioara)

(STEF92 Technology, 2026, Samal Muratova, Volodymyr Khomenko, Olena Yavorska, Elmira Omirzakova, Kuanysh Tavassarov)

(STEF92 Technology, 2026, Samal Muratova, Arailym Zhanggirkhanova, Ravshan Zokirov, Irmukhamat Kholismatov, Kuanysh Tavasarov)

(STEF92 Technology, 2026, Valentin Sirbu, Sorin Radu, Mihai Magyari, Dragos Fotau, Sorin Zsido)

(STEF92 Technology, 2026, Catalin-Mihai Popa, Florin Adrian Paun, Mirela Ancuta Radu, Sorin Rasnoveanu)

(STEF92 Technology, 2026, Colda Cosmin, Sorin BURIAN, Danut GRECEA, Gheorghe MARC, Marius Darie)

(STEF92 Technology, 2026, Sorin BURIAN, Danut Grecea, Cosmin COLDA, Alexandru BELDIMAN, Gabriela PUPAZAN)

(STEF92 Technology, 2026, Madiyar Aliakbar, Nursulu Tovbassarova, Manshuk Sarbopeyeva, Zhadyra Suleimenova, Madina Ganikhanova)

(STEF92 Technology, 2026, Krzysztof Labus)

(STEF92 Technology, 2026, Boranbay Ratov, Mars Narbaev, Akerke Muzapparova, Zamanbek Utepov)

(STEF92 Technology, 2026, Aidar Kuttybayev, Shynar Baimukasheva, Zhanna Kenzhegaliyeva, Zamanbek Utepov, Tolegen Kylyshbayev)
Directional drilling operations involve complex mechanical and hydraulic interactions that often lead to inefficient weight transfer, excessive torque and drag, vibration-induced dysfunctions, and inadequate hole cleaning, thereby reducing drilling efficiency and increasing operational costs. Polycrystalline diamond compact (PDC) bits with optimized tungsten-carbide cutter geometry provide an effective solution for improving drilling performance in high-angle and extended-reach wells. This study investigates the i...

(STEF92 Technology, 2026, Marcel-Daniel Rad, Mihai Magyari, Lucian Moldovan, Dragos Fotau, Diana Salasan)

(STEF92 Technology, 2026, LORAND TOTH, Artur George Gaman, Daniel Pupazan, Cristian Nicolescu, Cosmin Ilie)

(STEF92 Technology, 2026, Samal Muratova, Volodymyr Khomenko, Oleksandr Pashchenko, Abat Zhailiyev, Arailym Zhanggirkhanova)

(STEF92 Technology, 2026, Tiberiu Csaszar, Gabriela Pupazan, Marius Darie, Adriana Andris, Alexandru Beldiman)

(STEF92 Technology, 2026, Cristian Percembli, Andrei Laurentiu Niculae, Lucian Miron, Radu Chiriac)

(STEF92 Technology, 2026, Diana Salasan, Lucian Moldovan, Marcel Daniel Rad, Valentin Constantin Sirbu, Sorin Zsido)

(STEF92 Technology, 2026, Gulzada Umirova, Aidar Kuttybayev, Maria Tokareva, Arthur Kosminov, Nursulu Tovbassarova)

(STEF92 Technology, 2026, Mustafa Shayto)

(STEF92 Technology, 2026, Alecsa Cristina)

(STEF92 Technology, 2025-08-15, Dănuț Grecea, Cosmin Colda, Gabriela Pupăzan, Adriana Andriş, Alexandru Beldiman)

(STEF92 Technology, 2025-08-15, Marius Darie, Tiberiu Csaszar, Sorin Burian, Cosmin Colda, Danus Grecea)

(STEF92 Technology, 2025-08-15, Adrian Jurca, Florin Păun, Mirela-Ancuta Radu)

(STEF92 Technology, 2025-08-15, Lorand Toth, Daniel Pupăzan, Cristian Nicolescu, Cosmin Ilie, Andrei Gireadă)

(STEF92 Technology, 2025-08-15, Adrian Bogdan Şimon-Marinică, Emilian Ghicioi, Nicolae Ioan Vlasin, Zoltan Vass, Laurensiu Munteanu)

(STEF92 Technology, 2025-08-15, Florin Păun, Dan Gabor, Mirela Ancuța Radu, Sorin Rasnoveanu)

(STEF92 Technology, 2025-08-15, Catalin-Mihai Popa, Dan Gabor, Sorin Rasnoveanu, Anamaria Daroczi)

(STEF92 Technology, 2025-08-15, Aydar A. Akhmadiyarov, Аrtem А. Petrov, Dmitrii A. Emelianov, Ilnaz T. Rakipov, Mikhail A. Varfolomeev)

(STEF92 Technology, 2025-08-15, Gheorghe-Daniel Florea, Adrian Bogdan Şimon-Marinică, Vlad Mihai Păsculescu, Ligia Ioana Tuhuţ, Cristian Raul Cioară)

(STEF92 Technology, 2025-08-15, Diana Sălășan, Valentin S rbu, Lucian Moldovan, Marcel Rad, Dragoş Fotău)

(STEF92 Technology, 2025-08-15, Valentin S rbu, Diana Sălășan, Mihai Magyari, Marcel Rad, Dragoş Fotău)

(STEF92 Technology, 2025-08-15, Gulzada Umirova, Andrіi Sudakov, Aliya Togasheva, Mukhamejan Seksenbay, Yuldashbay Daribaev)

(STEF92 Technology, 2025-08-15, Tiberiu Csaszar, Marius Darie, Gabriela Pupăzan, Adriana Andriş, Alexandru Beldiman)

(STEF92 Technology, 2025-08-15, G.K. Umirova, Andrіi Sudakov, Aliya Togasheva, Akshyryn Zholbasarova, Ryskol Bayamirova)

(STEF92 Technology, 2024-12-15, Dmitry Skobelev, Maria Dobrokhotova, Natalia Popadko, Yuliya Ukhina, Rauf Ismayilov)

(STEF92 Technology, 2024, Odi Fawwaz Alrebei)

(STEF92 Technology, 2024-12-15, A. I. Nakhutin, Nikita Popov, Vladimir Berdin, А. А. Миронов, Anastasia Uledova, Daria Kozlova)

(STEF92 Technology, 2024-12-15, Alberto Maria Gambelli, Jessica Di Mario, Enrico Gigliotti)

(STEF92 Technology, 2024-12-15, Alberto Maria Gambelli, Jessica Di Mario, Giovanni Gigliotti)

(STEF92 Technology, 2024-12-15, Stefan-Mircea Mustata, Cristian Vidan, Ionut-Mihai Nacu)

(STEF92 Technology, 2024-12-15, И. О. Тихонова)

(STEF92 Technology, 2024-12-15, Przemyslaw Ziemba, Ewa Knapik)

(Stef92 Technology, 2011-06-20, Nikola Botoucharov)

(Stef92 Technology, 2011-06-20, D. K. Baiseit)

(Stef92 Technology, 2011-06-20, Orhan Kavak)

(Stef92 Technology, 2011-06-20, Petraq Naco)

(Stef92 Technology, 2011-06-20, Е.Ф. Захарова)

(Stef92 Technology, 2011-06-20, Artur Gabdrakhmanov)

(Stef92 Technology, 2011-06-20, Mehmet Altunsoy)

(Stef92 Technology, 2011-06-20, Е.Ф. Захарова)
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