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公开(公告)号：US20210179774A1
公开(公告)日：2021-06-17
申请号：US16713671
申请日：2019-12-13
摘要： A polymeric anti-agglomerant hydrate inhibitor useful for preventing the formation of hydrate agglomerates in a multi-phase oilfield fluid may be synthesized via a condensation reaction between a cyclic anhydride and a tertiary amine-diol in the presence of a condensation catalyst to form a polyester amine precursor and a reaction of the polyester amine polymer precursor with an organic acid.
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2.发明公开公开(公告)号：US20240034921A1
公开(公告)日：2024-02-01
申请号：US17877973
申请日：2022-07-31
IPC分类号： C09K8/52
CPC分类号： C09K8/52 , C09K2208/22
摘要： In gas hydrate inhibitor formulations used to prevent or inhibit the formation of gas hydrates in multi-phase fluids, such as hydrocarbon production fluids, conventional solvents can be largely replaced by at least one organic carbonate solvent, such as ethylene carbonate, propylene carbonate, and/or glycerol carbonate. The gas hydrate inhibitors in these formulations may be, but are not necessarily limited to, polyesteramides, polyvinylpyrrolidones, and the like. The use of an organic carbonate in the gas hydrate inhibitor formulation can improve the capability of the formulation for inhibiting or preventing gas hydrate formation in a multi-phase fluid.
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3.发明授权公开(公告)号：US12122959B2
公开(公告)日：2024-10-22
申请号：US17877973
申请日：2022-07-31
IPC分类号： C09K8/52
CPC分类号： C09K8/52 , C09K2208/22
摘要： A gas hydrate inhibitor formulation used to prevent or inhibit the formation of gas hydrates in multi-phase fluids, such as hydrocarbon production fluids, includes at least one gas hydrate inhibitor and at least one organic carbonate solvent, which may be an organic carbonate, a derivative of the organic carbonate, or a combination thereof. The at least one organic carbonate solvent may be ethylene carbonate, propylene carbonate, glycerol carbonate, an aromatic carbonate, a dialkyl carbonate, an alkyl carbonate, or a combination of the same. The at least one gas hydrate inhibitor may be polyesteramides, polyvinylpyrrolidones, a vinylcaprolactam/vinyl pyrrolidone copolymer, polyvinyl caprolactam or a combination thereof.
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