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公开(公告)号：US20190233711A1
公开(公告)日：2019-08-01
申请号：US15885207
申请日：2018-01-31
IPC分类号： C09K8/532 , C01G49/12 , C07C321/14 , C07C63/06 , C07C53/08 , C07C53/02 , C01G9/00 , C01G37/00
CPC分类号： C09K8/532 , C01G9/00 , C01G37/00 , C01G49/12 , C07C53/02 , C07C53/08 , C07C63/06 , C07C321/14 , C09K8/528 , C09K2208/20 , C23G1/088
摘要： An aqueous iron sulfide dissolver including zinc, chromium, a methoxybenzoic acid, formic acid, acetic acid, and hydrochloric acid. The iron sulfide dissolver is made by combining these components, and dissolves compounds including iron sulfide upon contact. Evolved hydrogen sulfide reacts with the methoxybenzoic acid to yield solubilized methanethiol as an intermediate product, which is further oxidized to yield dissolved dimethyl disulfide.
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公开(公告)号：US20190040300A1
公开(公告)日：2019-02-07
申请号：US15670826
申请日：2017-08-07
发明人： Hejian Sun , Leiming Li , Feng Liang
CPC分类号： C09K8/532 , C09K8/54 , C09K2208/20 , C09K2208/32 , C23G1/088 , E21B37/06
摘要： A low-corrosivity composition suitable for dissolving scale on metals. The scale includes iron sulfide scale. The composition includes an aqueous hydrogen peroxide solution comprising hydrogen peroxide; and an acidic solution comprising at least one acid, where the hydrogen peroxide and acid are present at concentrations such that the hydrogen peroxide does not break down to form visible bubbles at about room temperature, where the hydrogen peroxide and acid are present at concentrations such that iron sulfide scale is removed from a metal with iron sulfide scale, after the composition contacts the metal and iron sulfide scale at an elevated temperature greater than room temperature, and where the hydrogen peroxide and acid are present at concentrations such that pitting is not caused on the metal, the metal comprising carbon steel.
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公开(公告)号：US20180245004A1
公开(公告)日：2018-08-30
申请号：US15445707
申请日：2017-02-28
申请人： Ecolab USA Inc.
发明人： Brett Geissler , Ashish Dhawan
CPC分类号： C10G29/28 , A01N31/08 , C02F1/68 , C02F2101/101 , C09K8/532 , C09K2208/20 , C09K2208/32
摘要： The present invention generally relates to the use of aryl sulfonium salts for lowering sulfide concentrations and for preventing growth of microbes in a water injection system, a hydrocarbon extraction system, or a hydrocarbon production system. Treating oilfield injection and produced fluids containing high levels of microbes with aryl sulfonium salts can significantly decrease the amount of hydrogen sulfide produced, which can be used to measure sulfidogenesis. The treatment can also decrease the number of active microbes in the injection and produced fluids. Thus, these aryl sulfonium salts can be effectively used as inhibitors of hydrogen sulfide generation and as biocides in oilfield fluids.
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44.发明申请公开(公告)号：US20180170752A1
公开(公告)日：2018-06-21
申请号：US15737112
申请日：2016-08-17
发明人： BRETT CHANDLER , RONALD PLASIER
CPC分类号： C01B11/024 , C09K8/52 , C09K8/532 , C09K2208/20 , E21B37/06
摘要： Various methods are disclosed for pumping sodium chlorite with the simultaneous addition of methanesulfonic acid (MSA) in a conventional acid stimulation. This allows for the delayed generation of chlorine dioxide to address iron sulfide and polysulfides in combination with biofilms and carbonate scales.
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公开(公告)号：US20180148632A1
公开(公告)日：2018-05-31
申请号：US15827466
申请日：2017-11-30
申请人： Ecolab USA Inc.
CPC分类号： C09K8/54 , C09K8/524 , C09K8/532 , C09K2208/32 , C11D1/00 , C23F11/04 , C23F11/10 , C23F11/126 , C23F11/149 , C23F11/161 , C23G1/061 , C23G1/065 , C23G1/088
摘要： A composition for inhibiting corrosion and/or removing hydrocarbonaceous deposits in oil and gas applications is provided. The composition comprises an iron sulfide dissolver, an organic solvent, and a corrosion inhibitor.
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公开(公告)号：US20180105732A1
公开(公告)日：2018-04-19
申请号：US15562852
申请日：2016-03-01
发明人： Cyril Emeka OKOCHA , Jonathan Wylde
IPC分类号： C09K8/532
CPC分类号： C09K8/532 , C02F5/10 , C02F5/12 , C02F5/14 , C02F2101/101 , C02F2103/10 , C02F2303/22 , C09K8/528 , C09K2208/20 , C09K2208/32
摘要： The present invention provides a composition useful as a sulfide scale inhibitor for application in oilfield operations, comprising 1) at least one copolymer that comprises as monomers a) 0.1 to 10 mol-%, of structural units derived from vinylphosphonic acid and/or of a salt thereof, b) 40 to 80 mol-% of structural units derived from compounds of the formula (1) c) 1 to 50 mol-% of structural units derived from compounds of the formula (2) in which X is OH or NR3R4, and R3 and R4, independently of one another, are H or C1-C4-alkyl, 2) at least one of tris (hydroxymethyl) phosphine or a tetrakis(hydroxymethyl)phosphonium salt, 3) at least one surfactant, 4) at least one amine or ammonium salt.
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公开(公告)号：US20180100096A1
公开(公告)日：2018-04-12
申请号：US15573783
申请日：2016-03-21
发明人： Jonathan James Wylde
IPC分类号： C09K8/532 , C07F3/06 , C07C15/113 , C07D255/02
CPC分类号： C09K8/532 , C07C15/113 , C07D255/02 , C07F3/06 , C09K2208/20 , C09K2208/32
摘要： This invention relates to a composition comprising 1.) a metal carboxylate, wherein the metal M is selected from the group consisting of Ag, Cn, Hg, Pb, Sn, Ni, Co, Ca, Fe, Zn and Mn, those metals being present as ions in a +2 or +3 charge state, and wherein the carboxylate anion is derived from a hydrocarbyl monocarboxylic acid having 5 to 20 carbon atoms, or a mixture of such acids, 2.) a solvent selected from the group consisting of water, glycol ethers having from 4 to 15 carbon atoms, alkyl alcohols having from 1 to 10 carbons, and aromatic hydrocarbon solvents having from 6 to 30 carbons, and 3.) an emulsion breaker which is a polymeric nonionic surfactant.
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公开(公告)号：US09920236B2
公开(公告)日：2018-03-20
申请号：US14630244
申请日：2015-02-24
发明人： Stephen D. Matza , Martha T. Smith , Jack G. Frost
CPC分类号： C09K8/532 , C09K8/52 , C09K2208/20 , C10G27/04 , C10G29/04 , C10G29/20 , C10G2300/1033 , C10G2300/202 , C10G2300/207 , C10G2300/807 , E21B36/00 , E21B43/38
摘要： A method and system remove hydrogen sulfide from a sour liquid. In an embodiment, the method for removing hydrogen sulfide from a hydrocarbon containing fluid includes contacting a methylmorpholine-N-oxide solution with the sour liquid. The method also includes allowing the methylmorpholine-N-oxide to react with the hydrogen sulfide to remove the hydrogen sulfide.
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公开(公告)号：US20170355895A1
公开(公告)日：2017-12-14
申请号：US15527147
申请日：2014-12-23
发明人： Yang Peng , Zhiwei Yue , Chunfang Fan , Johnathan Scott Hazlewood
CPC分类号： C09K8/532 , C09K8/03 , C09K8/528 , C09K2208/20 , E21B37/06
摘要： The present disclosure relates to methods and compositions to control inorganic sulfide scale formations in oilfield applications, including flow lines, wellbores, and subterranean formations. An embodiment of the present disclosure is a method comprising: providing a treatment fluid comprising: a base fluid, a scale inhibitor, and a water clarifying agent; introducing the treatment fluid into a target region, wherein an inorganic cation and a sulfide anion are present in the target region; allowing the inorganic cation and the sulfide anion to form a sulfide precipitate; and using the treatment fluid to remove at least a portion of the sulfide precipitate from the target region.
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公开(公告)号：US20170335188A1
公开(公告)日：2017-11-23
申请号：US15528186
申请日：2014-12-23
发明人： Liu Shi , Funian Zhao , Liangwei Qu , Michael Harless , Ron Hoppe
IPC分类号： C09K15/06 , C09K8/54 , B01D19/00 , C02F1/20 , C09K8/52 , C02F103/10 , C02F101/10
CPC分类号： C09K15/06 , B01D19/0005 , C02F1/20 , C02F2101/101 , C02F2103/10 , C09K8/52 , C09K8/532 , C09K8/54 , C09K2208/20 , Y02W10/37
摘要： Composition for the removal or inactivation of hydrogen sulfide or soluble sulfide ion other species comprising ionizable sulfur (e.g., mercaptans, thiols, etc.) using compositions containing acrylate and/or derivatives thereof are provided. Methods for the removal or inactivation of hydrogen sulfide or other sulfur species in oilfield sites and other related applications using compositions containing acrylate and/or derivatives thereof are provided.
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