Results 241 to 250 of about 127,095 (306)

Disorder‐Driven Fast Na+ Transport: From Crystalline to Amorphous Networks in the Mixed‐Anion NaTaOxCl6−2x Oxychlorides

Advanced Energy Materials, EarlyView.
Oxygen substitution in NaTaOxCl6‐2x drives structural evolution from isolated [TaCl6]– octahedra, through oxygen‐bridged [Ta2OCl10]2– dimers, toward extended trans‐[TaO2Cl4]3– chain‐like arrangements. At intermediate compositions, zero‐dimensional corner‐sharing motifs are proposed to create a flexible, disordered framework that peaks ionic ...
Justin Leifeld, Abigail C. Parsons, Alexandra Morscher, Xabier Martinez de Irujo‐Labalde, Marvin A. Kraft, Oskar G. Soulas, Bibek Samanta, Wiebke Zielasko, Neelam Yadav, Kyra Strotmann, Niina Jalarvo, Bruno V. M. Rodrigues, Adam Slabon, Philipp Adelhelm, Michael Ryan Hansen, David O. Scanlon, Wolfgang G. Zeier, Alexander G. Squires   +17 more
wiley   +1 more source

Redox Complexity in Sodium Manganese Hexacyanomanganate and Its Influence on Sodium‐Ion Storage Performance

Advanced Energy Materials, EarlyView.
The role of each Mn site in the Na3‐xMn[Mn(CN)6]·zH2O compounds’ redox activity was investigated using a combined experimental–computational approach, which shows that only the low‐spin Mn‐C site undergoes redox changes (Mn1+ to Mn4+), while high‐spin Mn‐N remains unchanged. The study confirms the presence of the Mn1+ intermediate and newly reveals its
Zhenying Li, Nilanka M. Keppetipola, Yu Wang, Gwenaëlle Rousse, Romain Dugas, Anatolii V. Morozov, Artem M. Abakumov, Héloïse Pages, Mouna Ben Yahia, Marie‐Liesse Doublet, Ozlem Sel, Jean‐Marie Tarascon   +11 more
wiley   +1 more source

Preparation of Low-Molecular-Weight Polyacrylamide as the Delayed Crosslinking Plugging Agent for Drilling Fluid. [PDF]

Gels
Wang Q, Zhou C, Zhang H, Zhang X, Wen X, Bai J, Mao H.   +6 more
europepmc   +1 more source

Engineering Aspects of the Implied Covenant to Protect Against Drainage [PDF]

, 2000
Coutret, Henry C., Jr.
core   +2 more sources

Preparation and Performance Evaluation of Ionic Liquid Copolymer Shale Inhibitor for Drilling Fluid Gel System. [PDF]

Gels
Dai Z, Sun J, Xiu Z, Huang X, Lv K, Liu J, Sun Y, Dong X.   +7 more
europepmc   +1 more source

Non-metal cocatalyst CNT-modified emerging g-C₃N₄ for enhanced treatment of waste drilling fluid filtrate. [PDF]

RSC Adv
Li W, Wang X, Chen Y, Wu P, Li Z, Wang Z, Gu D.   +6 more
europepmc   +1 more source

Development and Application of the Anti-High-Temperature Delayed Crosslinking Polymer as a Gel Plugging Additive for Drilling Fluid. [PDF]

Gels
Wang Q, Cai J, Wang J, Zhou C, Wen X, Zhang J, Mao H.   +6 more
europepmc   +1 more source

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Computer Analysis of Drilling Fluids

SPE Annual Technical Conference and Exhibition, 1980
ABSTRACT A computer program has been developed which analyzes drilling fluids by using the information given on the standard API Drilling Mud Report. The program incorporates the latest drilling fluid engineering technology, coupled with years of field experience.
James Sampey, Richard Cottingham
openaire   +1 more source

Solids Control In A Drilling Fluid

SPE Symposium on Formation Damage Control, 1978
Abstract The higher costs of drilling today as well as the increased depths required are forcing operators and contractors around the world to become knowledgeable of the benefits, techniques, and equipment available to control solids effectively in a drilling fluid.
William Marshall, Louis Brandt
openaire   +1 more source

A Novel Drilling Fluid for Underbalanced Drilling

Proceedings, 2009
Interest in underbalanced drilling is growing worldwide. UBD, when properly designed, eliminates problems associated with the invasion of particulate matter into the formation. However, experience has indicated it is difficult to maintain a condition of continuous underbalance pressure throughout the complete drilling operation, resulting in fluid ...
E. Karimyan, H. Dashtian, K. Shahbazi
openaire   +1 more source