Results 41 to 50 of about 493,831 (303)

The Effect of Different Drilling Fluids on Mechanical Friction [PDF]

, 2017
A very important aspect in highly inclined wellbores is the mechanical friction. For extended reach drilling (ERD) and through tubing extended reach drilling (TTERD) this can be a limiting factor.
Saasen, Arild,, Golchin, Arash,, Ytrehus, Jan David,, Prakash, Braham,, Arild Saasen, Arash Golchin, Taghipour, Ali, Braham Prakash, Taghipour, Ali,, Ytrehus, Jan David, Golchin, Arash, Jan David Ytrehus, Ali Taghipour, Saasen, Arild, Prakash, Braham   +14 more
core   +1 more source

3D‐Printed Titanium Gyroid Scaffold Structure Integrated With Tough Hybrid Materials for Cartilage Replacement

Advanced Engineering Materials, EarlyView.
This study proposes a potential device design for joint cartilage replacement. Silica‐polytetrahydrofuran (SiO2‐PolyTHF) hybrids with customizable mechanical properties were developed to mimic the characteristics of a natural meniscus. These were synthesized through a two‐pot sol–gel hybrid process.
Yu‐Chien Lin, Gloria R. Young, Francesca Tallia, Reece N. Oosterbeek, Shaaz Ghouse, Edward Spiers, Nupur Kohli, Tom Briggs, Marc Masen, Siwei Li, Ren‐Jei Chung, Jonathan R. T. Jeffers, Julian R. Jones   +12 more
wiley   +1 more source

Barite-Free Muds for Drilling-in the Formations with Abnormally High Pressure

Fluids, 2022
This paper discusses problems associated with water-based drilling fluids used for drilling formations with abnormally high pressure. The available solutions are suitable for a narrow range of applications, especially when weighted muds should be used ...
Ekaterina Leusheva, Nazim Alikhanov, Valentin Morenov   +2 more
doaj   +1 more source

Microstructure‑Dependent Phase Transformations Under High‑Pressure Laser Heating in Additively Manufactured AlCrFe2Ni2

Advanced Engineering Materials, EarlyView.
Additively manufactured AlCrFe2Ni2 with contrasting BCC/B2‐dominant and lamellar FCC + BCC/B2 microstructures exhibits the same pressure‐induced BCC/B2 → HCP transformation. Under laser heating at high pressure, HCP is destabilized, and a cubic BCC/B2 + FCC assemblage is recovered, while the lower‐scan‐speed microstructure transforms at a lower ...
Raimundas Sereika, Hunter Kantelis, Yogesh K. Vohra, Shengbiao Zhang, Wuxian Yang, Wen Chen   +5 more
wiley   +1 more source

Electrospun Wood‐Derived Biopolymers as Electrodes in Electrochemical Energy Storage Technologies

Advanced Functional Materials, EarlyView.
Electrospinning transforms wood‐derived cellulose and lignin into architecturally defined, binder‐free carbon electrodes with tuneable porosity and functionality. This review shows how fibre design enables decoupled charge and mass transport, enhancing performance across battery systems, while identifying key challenges in spinnability, scalability ...
Michael W. Thielke, Hattie R. Chisnall, Jesus Vazquez Chavez, Ana B. Jorge Sobrido   +3 more
wiley   +1 more source

Enhancing pyrolysis efficiency of oil sludge with coconut shell insights into hydrocarbon recovery and heavy metal stabilization

Scientific Reports
This study investigates the effect of coconut shell (CS) addition on the pyrolysis behavior of oil sludge (OS) through co-pyrolysis experiments using bottom sludge from an oil refinery in Sichuan Province, China.
Mao-Ren Wang, Mao-Qi Liao, Xin Bai, Yu-Cheng Liu   +3 more
doaj   +1 more source

Preparation and Properties of Reversible Emulsion Drilling Fluid Stabilized by Modified Nanocrystalline Cellulose

Molecules
Reversible emulsion drilling fluids can concentrate the advantages of water-based drilling fluids and oil-based drilling fluids. Most of the existing reversible emulsion drilling fluid systems are surfactant-based emulsifier systems, which have the ...
Fei Liu, Yongfei Li, Xuewu Wang, Zhizeng Xia   +3 more
doaj   +1 more source

Implantable Ionic Memristors Based on Natural Polymer Heterojunctions

Advanced Functional Materials, EarlyView.
We report an implantable natural polymer‐based ionic memristor composed of hyaluronic acid, chitosan, and PDMS. The device achieved 98.94% accuracy in MNIST classification while reducing training time by 36.8% compared with a conventional artificial neural network (ANN).
Dong‐yup Lee, Byung Ik Park, Gihyeon Yim, Hyunjae Yoo, Sangjun Ma, Jundong Park, Jeong‐Yun Sun   +6 more
wiley   +1 more source

Nano Borophene as a Programmable 2D Scaffold for Organized DNA Assembly and Long‐Range Energy Transfer

Advanced Functional Materials, EarlyView.
Borophene is introduced as a programmable 2D bio‐interface that organizes DNA through dual boron–sulfur and nucleobase interactions. This molecular architecture enables efficient long‐range nanosurface energy transfer, establishing new design principles for functional nano–bio interfaces and amplification‐free optical biosensing.
Teresa Aditya, Pranay Saha, John M. Sansalone, Shraddha Krishnakumar, Matthew Molinaro, André J. van der Vlies, Nada Maher, Adrienne Griffiths, Zakhro Zakirova, Ketan Dighe, Narayana R. Aluru, Dipanjan Pan   +11 more
wiley   +1 more source

Investigation of the additive effect of nanoparticles on the hydrodynamic characteristics of drilling fluids [PDF]

, 2020
Investigations of the rheological properties of drilling fluids based on nanoparticles are carried out. The dependences of the effective viscosity and rheological parameters of fluids on the concentration, size and material of nanoparticles, and the ...
Матвеев, А. В., Жигарев, В. А., Неверов, А. Л., Кудрявцев, И. В., Михиенкова, Е. И.   +4 more
core   +2 more sources