Search Results - "KELLAND, Malcolm A"

A Review of Kinetic Hydrate Inhibitors from an Environmental Perspective by Kelland, Malcolm A

“…Kinetic hydrate inhibitors (KHIs) have been used in the upstream petroleum industry for about 25 years to prevent plugging of flow lines with gas hydrates. The…”
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History of the Development of Low Dosage Hydrate Inhibitors by Kelland, Malcolm A

“…Low dosage hydrate inhibitors (LDHIs) are a recent and alternative technology to thermodynamic inhibitors for preventing gas hydrates from plugging oil and gas…”
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Carbamate Polymers as Kinetic Hydrate Inhibitors by Abrahamsen, Eirin, Kelland, Malcolm A

“…Formation of gas hydrates is a problem in the petroleum industry, where the gas hydrates can cause blockage of the flowlines. Kinetic hydrate inhibitors (KHIs)…”
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Poly(N-vinyl azacyclooctanone): A More Powerful Structure II Kinetic Hydrate Inhibitor than Poly(N-vinyl caprolactam) by Chua, Pei Cheng, Kelland, Malcolm A

“…Poly(N-vinyl azacyclooctanone) (PVACO) has been synthesized for the first time. Dependent upon the method of polymerization and polymer molecular weight, the…”
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High Cloud Point Polyvinylaminals as Non-Amide-Based Kinetic Gas Hydrate Inhibitors by Kelland, Malcolm A, Dirdal, Erik Gisle, Zhang, Qian

“…In recent years, we have explored non-amide-based classes of kinetic hydrate inhibitor (KHI) polymers to determine if the same level of performance can be…”
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A Study of Natural Proteins and Partially Hydrolyzed Derivatives as Green Kinetic Hydrate Inhibitors by Kelland, Malcolm A, Zhang, Qian, Chua, Pei Cheng

“…One of the first ideas explored for kinetic hydrate inhibitors (KHIs) for oil industry applications came from observing that some animals contain antifreeze…”
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Synthesis and Characterization of Modified Aliphatic Polycarbonates as Environmentally Friendly Oilfield Scale Inhibitors by Mady, Mohamed F, Charoensumran, Preeyarad, Ajiro, Hiroharu, Kelland, Malcolm A

“…Oilfield scale inhibitors have been used for many decades, mostly to fight carbonate and sulfate scaling. Many inhibitors are known, but only a few show good…”
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Nonpolymeric Kinetic Hydrate Inhibitors: Alkylated Ethyleneamine Oxides by Magnusson, Carlos D, Kelland, Malcolm A

“…In this work, we present the results of a rare class of nonpolymeric molecules that show significant performance as stand-alone kinetic gas hydrate inhibitors…”
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Critical Growth Rate of Hydrate Crystal Growth Inhibitors in the Low Growth Rate Region by Muraoka, Michihiro, Kelland, Malcolm A, Yamamoto, Yoshitaka, Suzuki, Kiyofumi

“…We tested poly­(N-vinylpyrrolidone) (PVP) K-12, K-15, K-30, K-90, poly­(N-vinylcaprolactam) (PVCap), tetrapentylammonium bromide (TPeAB), tetrabutylammonium…”
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Dependence of the Kinetic Hydrate Inhibition Effect of Poly(N‑vinylpyrrolidone) upon the Molecular Weight Is Influenced by Water Mobility in Millisecond Dynamics by Li, Dongfang, Laroui, Abdelatif, Ma, Shang, Wang, Jie, Wang, Dong, Kelland, Malcolm A, Dong, Jian

“…Explosive formation of a natural gas clathrate hydrate in production lines has been a technical bottleneck in ocean field natural gas drilling and gas…”
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Synergistic Gas Hydrate and Corrosion Inhibition Using Maleic Anhydride: N‑Isopropylmethacrylamide Copolymer and Small Thiols by Pomicpic, Janronel, Kelland, Malcolm A.

“…Kinetic gas hydrate inhibitors (KHIs) are often used in combination with film-forming corrosion inhibitors (CIs) in oilfield production flow lines. However,…”
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Tetrahydrofuran Hydrate Crystal Growth Inhibitor Performance and Mechanism of Quaternary Ammonium and Phosphonium Salts by Muraoka, Michihiro, Kelland, Malcolm A, Yamamoto, Yoshitaka, Tenma, Norio

“…To gain insight into the hydrate crystal growth inhibitor (HCGIs) mechanism, we have studied various quaternary ammonium ionic liquid salts (QAILs) and…”
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Inhibition of Gas Hydrate Nucleation and Growth: Efficacy of an Antifreeze Protein from the Longhorn Beetle Rhagium mordax by Perfeldt, Christine Malmos, Chua, Pei Cheng, Daraboina, Nagu, Friis, Dennis, Kristiansen, Erlend, Ramløv, Hans, Woodley, John M, Kelland, Malcolm A, von Solms, Nicolas

“…Antifreeze proteins (AFPs) are characterized by their ability to protect organisms from subfreezing temperatures by preventing tiny ice crystals in solution…”
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Non-Amide Polymers as Kinetic Hydrate InhibitorsMaleic Acid/Alkyl Acrylate Copolymers and the Effect of pH on Performance by Pomicpic, Janronel, Ghosh, Radhakanta, Kelland, Malcolm A

“…Kinetic hydrate inhibitors (KHIs) have been used for over 25 years to prevent gas hydrate formation in oil and gas production flow lines. The main component in…”
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Performance of Waterborne Polyurethanes in Inhibition of Gas Hydrate Formation and Corrosion: Influence of Hydrophobic Fragments by Pavelyev, Roman S, Zaripova, Yulia F, Yarkovoi, Vladimir V, Vinogradova, Svetlana S, Razhabov, Sherzod, Khayarov, Khasan R, Nazarychev, Sergei A, Stoporev, Andrey S, Mendgaziev, Rais I, Semenov, Anton P, Valiullin, Lenar R, Varfolomeev, Mikhail A, Kelland, Malcolm A

“…The design of new dual-function inhibitors simultaneously preventing hydrate formation and corrosion is a relevant issue for the oil and gas industry. The…”
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Nonpolymeric Citramide-Based Kinetic Hydrate Inhibitors: Good Performance with Just Six Alkylamide Groups by Ghosh, Radhakanta, Kelland, Malcolm A

“…The use of kinetic hydrate inhibitors (KHIs) is a well-known method for preventing gas hydrate formation in oil and gas production flow lines. The main…”
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Effect of Divalent Cations and Other Ions on the Tetrahydrofuran Crystal Inhibition of Quaternary Ammonium SaltsRelevance to the Efficiency of Gas Hydrate Quaternary Anti-agglomerants by Kelland, Malcolm A., Rønning, Kjetil Walter

“…Gas hydrate anti-agglomerants (AAs) are a class of low-dosage hydrate inhibitor that are used to prevent plugging of gas hydrates in oil and condensate…”
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Phosphonated Polyetheramine-Coated Superparamagnetic Iron Oxide Nanoparticles: Study on the Harsh Scale Inhibition Performance of Calcium Carbonate and Barium Sulfate by Karaly, Ali H., Kelland, Malcolm A., Mady, Mohamed F.

“…Harsh scale buildup, such as calcium carbonate (calcite) and barium sulfate (barite), poses significant challenges in the oil and gas industry. While various…”
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Kidney Stone Prevention: Dynamic Testing of Edible Calcium Oxalate Scale Inhibitors by Kelland, Malcolm A, Mady, Mohamed F, Lima-Eriksen, Rikke

“…We present results on dynamic testing for calcium oxalate (CaOx) crystal growth inhibition of many of the known polyprotic additives previously investigated by…”
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Kinetic Gas Hydrate Inhibition by Alternating Dipeptoids with Optimal Size and Shape N‑Substituents by Kelland, Malcolm A., Koyama, Yasuhito, Pomicpic, Janronel, Shinoda, Takuma

“…Current commercial kinetic hydrate inhibitors (KHIs) are all based on water-soluble polymers with amphiphilic alkylamide or lactam groups. The size and shape…”
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