Journal ArticleDOI
History of the Development of Low Dosage Hydrate Inhibitors
TLDR
In this article, the authors present a review of the research and development of low dosage hydrate inhibitors with emphasis on the chemical structures that have been designed and tested, and the mechanisms of both kinetic inhibitors and anti-agglomerants.Abstract:
Low dosage hydrate inhibitors (LDHIs) are a recent and alternative technology to thermodynamic inhibitors for preventing gas hydrates from plugging oil and gas production wells and pipelines. LDHIs are divided into two main categories, kinetic inhibitors (KHIs) and anti-agglomerants (AAs), both of which are successfully being used in field applications. This paper reviews the research and development of LDHIs with emphasis on the chemical structures that have been designed and tested. The mechanisms of both KHIs and AAs are also discussed.read more
Citations
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Journal ArticleDOI
Fundamentals and Applications of Gas Hydrates
TL;DR: The state of the art in gas hydrate research is leading to new understanding of formation and dissociation phenomena that focuses on measurement and modeling of time-dependent properties of gas hydrates on the basis of their well-established thermodynamic properties.
Journal ArticleDOI
Gas hydrates in sustainable chemistry
Aliakbar Hassanpouryouzband,Aliakbar Hassanpouryouzband,Aliakbar Hassanpouryouzband,Edris Joonaki,Edris Joonaki,Mehrdad Vasheghani Farahani,Satoshi Takeya,Carolyn D. Ruppel,Jinhai Yang,Niall J. English,Judith M. Schicks,Katriona Edlmann,Hadi Mehrabian,Zachary M. Aman,Bahman Tohidi +14 more
TL;DR: This review summarizes the different properties of gas hydrates as well as their formation and dissociation kinetics and then reviews the fast-growing literature reporting their role and applications in the aforementioned fields, mainly concentrating on advances during the last decade.
Journal ArticleDOI
The chemistry of low dosage clathrate hydrate inhibitors
TL;DR: The review covers both kinetic hydrate inhibitors and anti-agglomerants from the point of view of structure-function relationships, focussing on recent refinements in mechanistic understanding and chemical design and the consequently evolving and increasingly fine-tuned properties of these fascinating compounds.
Journal ArticleDOI
Role of Surfactants in Promoting Gas Hydrate Formation
TL;DR: In this paper, a review of the existing literature on surfactants suggests that enhanced rate of hydrate nucleation and growth kinetics may not be directly linked to micelle formation.
Journal ArticleDOI
Recent advances in gas hydrate-based CO2 capture
TL;DR: In this paper, the effects of various chemical additives and mechanical methods on gas consumption, operating conditions, hydrate induction time and CO2 recovery are critically reviewed, in comparison with the conventional methods for CO2 capture also are discussed.
References
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Journal ArticleDOI
Effective kinetic inhibitors for natural gas hydrates
TL;DR: In this paper, a hydrate formation mechanism is reviewed to suggest the new inhibition method and two apparatuses are presented for the best kinetic inhibitors among approximately 1500 chemicals, including poly(N-vinylcaprolactam) (PVCAP), poly(n)-vinylpyrrolidone (N-PVC), N-dimethylaminoethyl-methacrylate (VC-713), and N-vinYL-poly(nvinylpolymorphic acid) (VP/VC).
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Mechanisms of gas hydrate formation and inhibition
TL;DR: In this article, the structural transformations of water around methane during methane hydrate formation have been studied using neutron diffraction with isotope substitution over the temperature range 4-18°C and at pressures of 3.4-14.5
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Molecular dynamics study of gas hydrate formation.
TL;DR: Long-time-scale molecular dynamics simulations are presented of the spontaneous formation of methane hydrate at a methane/liquid water interface and the hydrate clusters showed clear signatures of the type II hydrate structure even though the type I structure is the thermodynamically stable form.
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Hydrate inclusion compounds
TL;DR: There are three general classes of hydrate inclusion compounds: the gas, the peralkyl onium salt and the alkylamine hydrates as mentioned in this paper, and these classes are known as clathrates, ionic inclusion compounds, and semi-clathrates.
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Hydrate plug prevention by anti-agglomeration
TL;DR: In this paper, both commercially available surfactants and synthesized anti-agglomerants were tested in high-pressure apparatuses at typical pipeline conditions, and they were chosen based on their hydrophilic-lipophilic balance (HLB).