Results 51 to 60 of about 7,353,639 (302)

Proceedings of the Integrated Ocean Drilling Program 307: Modern Carbonate Mounds: Porcupine Drilling

, 2006
<p>Challenger Mound, a prominent mound structure covered with dead cold-water coral rubble on the southwest Irish continental margin, was the focus of 12 days of scientific drilling aboard the <em>JOIDES Resolution</em> during ...
Sasaki, Keiichi, Titschack, Jürgen, Foubert, Anneleen, Browning, Emily L., Gharib, Jamshid J., Frank, Tracy D., Bjerager, Morten, Andres, Miriam S., Li, Xianghui, Léonide, Philippe, Gaillot, Philippe, Abe, Kohei, Mangelsdorf, Kai, Huvenne, Veerle Ann Ida, Novosel, Ivana, Samarkin, Vladimir, Kano, Akihiro, Williams, Trevor, Fuwa, Yuji, De Mol, Ben, Spivack, Arthur J., Takashima, Chizura, Ferdelman, Timothy G., Cragg, Barry, Sakai, Saburo   +24 more
core   +1 more source

Shale problems and water-based drilling fluid optimisation in the Hassi Messaoud Algerian oil field [PDF]

, 2010
Drilling fluid formulation and properties play a fundamental role in drilling operations. Clay minerals behave initially as a beneficial rheological adjuvant in drilling muds.
Khodja, Mohamed, Bergaya, Faiza, Abdelbaki Benmounah, Faiza Bergaya, Jean Paul Canselier, Fourar, Karim, Karim Fourar, Malika Khodja, Nathalie Cohaut, Khodja, Malika, Benmounah, Abdelbaki, Cohaut, Nathalie, Canselier, Jean-Paul, Mohamed Khodja   +13 more
core   +1 more source

Gallium Microalloying in Bi–Sn Solders: Interfacial Phase Formation, Wettability, and Long‐Term Shear Reliability Under Isothermal Aging

Advanced Engineering Materials, EarlyView.
Gallium microalloying redirects interfacial reactions in low‐temperature Bi–Sn solders from Cu–Sn toward Cu–Ga intermetallic formation. The resulting Cu–Ga layer suppresses intermetallic growth during thermal aging, alters fracture pathways, and improves interfacial stability.
Iva Králová, Markéta Klimtová, Mohd Faizul Mohd Sabri, Yew Hoong Wong, Petr Veselý, Martin Plaček, Karel Dušek   +6 more
wiley   +1 more source

Evaluating the Effect of Stabilized Weight Transfer to the Bit on Mechanical Specific Energy in Horizontal Well Drilling

Eng
This study investigates the effect of stabilizing axial load transfer to the bit on mechanical-specific energy during horizontal well drilling. To analyze drilling regimes, field data on WOB, ROP, RPM, TOB, and MSE were used and processed using z-score ...
George Buslaev, Aleksandr Konoplyannikov, Elizaveta Smirnova   +2 more
doaj   +1 more source

Study on Bottom Hole Assembly and Drilling Parameter Optimization for Reaming While Drilling

Shiyou jixie, 2021
Domestic studies on bottom hole assembly(BHA)and drilling parameter optimization for reaming while drilling(RWD)are lack of the calculation model which considers three influence factors(i.e., geometric configuration of pilot bit and reamer, formation ...
Zhang Jiawei, Ji Guodong, Guo Weihong, Wang Haigei, Cui Meng, Hui Cheng   +5 more
doaj  

Optimization of the technology of hoisting operations when drilling oil and gas wells

IOP Conference Series: Earth and Environment
In the process of drilling deep wells, hoisting operations are, although unproductive, a necessary expenditure of working time and occupy 25-60% of the total time of well construction.
V. Khomenko, O. Pashchenko, B. Ratov, Roman Kirin, Serhii Svitlychnyi, A. Moskalenko   +5 more
semanticscholar   +1 more source

Drilling Process of GFRP Composites: Modeling and Optimization Using Hybrid ANN

Sustainability, 2022
This paper aims to optimize the machining parameters of the drilling process of woven-glass-fiber reinforced epoxy (WGFRE) composites. It will focus on modeling and optimizing drill spindle speed and feed with different laminate thicknesses, with respect
M. S. Abd-Elwahed
semanticscholar   +1 more source

Materials‐Driven Additive Manufacturing for Electrical Machines: Qualification‐Oriented Design Beyond Geometric Freedom

Advanced Engineering Materials, EarlyView.
This perspective reframes additive manufacturing for electrical machines as a qualification‐limited materials and architecture design problem. It links process–structure–property–performance relationships to magnetic, conducting, dielectric, and thermal property windows, highlighting where AM can enable segmented magnetic circuits, permanent magnet ...
Dénes Fodor, Loránd Szabó
wiley   +1 more source

SELF-SUPERVISED FOUNDATION MODELS FOR REAL-TIME DRILLING OPTIMIZATION: CROSS-MODAL KNOWLEDGE TRANSFER FROM WELL LOG REPRESENTATIONS

Journal of Problems in Computer Science and Information Technologies
The optimization of real-time drilling faces significant hurdles stemming from limited data availability, complex operational environments, and a lack of machine learning models that can transfer knowledge across different geological settings.
Yerzhan Koshkarov, Marzhan Yesmagambetova, Oksana Mulesa   +2 more
doaj   +1 more source

Optimization of Process Variables in the Drilling of LM6/B4C Composites through Grey Relational Analysis

Materials, 2022
The objective of this investigational analysis was to study the influence of process variables on the response during the drilling of LM6/B4C composite materials. Stir casting was employed to produce the LM6/B4C composites.
C. Rubi, J. Prakash, R. Čep, Muniyandy Elangovan   +3 more
semanticscholar   +1 more source