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公开(公告)号：US12077712B2
公开(公告)日：2024-09-03
申请号：US18007574
申请日：2021-06-01
CPC分类号： C09K8/532 , C09K2208/10
摘要： A method to reduce the deposition of solid sulfur (S8(s)) in a natural gas producing well is described where hydrophobic surface modified silica nanoparticles are added into the tubing string, and the hydrophobic surface modified silica nanoparticles interact with the gaseous sulfur (S8(g)) present in the gas resulting in the reduction of the deposition of solid sulfur (S8(s)), The hydrophobic surface modified silica nanoparticles are selected from the group that includes silica, alumina and silica-aluminate. The hydrophobic surface modified silica nanoparticles may be added to the tubing string either dry or mixed first into a carrier fluid, which carrier fluid may be a liquid or a gas.
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公开(公告)号：US20240224999A1
公开(公告)日：2024-07-11
申请号：US18286254
申请日：2022-04-15
申请人： MC (US) 3 LLC
发明人： Olivia Stenzel , Hiteshkumar Dave
CPC分类号： A01N43/42 , A01N37/28 , A01P1/00 , C02F1/50 , C09K8/035 , C09K8/532 , C02F2101/101 , C09K2208/20
摘要： Disclosed herewith is a method of using N-hydroxycarboxamide compound based metabolic inhibitor composition, which has demonstrated efficacy for controlling biofilms formed by sulfate reducing prokaryotes. This composition is suitable for use in downhole, drilling and exploration application environments and in equipment like rigs, semi-submersibles, storage and base structures. It can also be used in other harsh environment applications, including mining, industrial extraction of metals and sewage treatment, as well as non-harsh environment applications.
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公开(公告)号：US12006469B2
公开(公告)日：2024-06-11
申请号：US18007646
申请日：2021-06-01
CPC分类号： C09K8/532 , F16L58/14 , C09K2208/10
摘要： A method to reduce the deposition of solid sulfur (Ss(s)) in a natural gas producing well, is described wherein the inside of the pipes used in the well are coated with a coating comprising polar surface treated nanoparticles. The polar surface treated nanoparticles interact with the sulfur gas and interfere with the deposition of solid sulfur onto the surface of the pipe. The polar surface treated nanoparticles are selected from the group consisting of silica, alumina and silica-aluminate, metal sulfates and metal oxides.
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公开(公告)号：US11814576B2
公开(公告)日：2023-11-14
申请号：US17968164
申请日：2022-10-18
发明人： Yulia Mosina , Zhiwei Yue , Ronald Oliver Bosch
IPC分类号： C09K8/532
CPC分类号： C09K8/532 , C09K2208/20
摘要： Provided is a method of introducing a scavenger composition into a fluid contaminated with a sulfur contaminant, mixing the scavenger composition with the fluid in a vessel, and recovering the fluid containing a reduced amount of sulfur contaminant from the effluent. The scavenger composition comprises a hydrogen sulfide scavenger and a linear anionic polymer. The linear anionic polymer is present in an amount of about 0.1% to about 50% by weight of the scavenger composition and has a number average molecular weight of about 1.0×103 to about 2.0×104 Daltons.
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5.发明授权公开(公告)号：US11708517B1
公开(公告)日：2023-07-25
申请号：US17857411
申请日：2022-07-05
发明人： Sagheer A. Onaizi
CPC分类号： C09K8/16 , C09K8/532 , C09K2208/20
摘要： A method of drilling a subterranean geological formation is described. The method includes driving a drill bit to form a wellbore in the subterranean geological formation thereby producing a formation fluid including hydrogen sulfide. The method further includes injecting a drilling fluid into the subterranean geological formation through the wellbore. The drilling fluid includes an aqueous solvent, a hydrogen sulfide scavenger including particles of a manganese oxide supported on a porous support. The particles are suspended in the aqueous solvent. The method further includes reacting the hydrogen sulfide scavenger with the hydrogen sulfide present in the formation fluid to form a manganese sulfide.
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6.发明公开公开(公告)号：US20230227711A1
公开(公告)日：2023-07-20
申请号：US18007646
申请日：2021-06-01
CPC分类号： C09K8/532 , F16L58/14 , C09K2208/10
摘要： A method to reduce the deposition of solid sulfur (Ss(s)) in a natural gas producing well, is described wherein the inside of the pipes used in the well are coated with a coating comprising polar surface treated nanoparticles. The polar surface treated nanoparticles interact with the sulfur gas and interfere with the deposition of solid sulfur onto the surface of the pipe. The polar surface treated nanoparticles are selected from the group consisting of silica, alumina and silica-aluminate, metal sulfates and metal oxides.
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7.发明公开公开(公告)号：US20230220269A1
公开(公告)日：2023-07-13
申请号：US18007574
申请日：2021-06-01
IPC分类号： C09K8/532
CPC分类号： C09K8/532 , C09K2208/10
摘要： A method to reduce the deposition of solid sulfur (S8(s)) in a natural gas producing well is described where hydrophobic surface modified silica nanoparticles are added into the tubing string, and the hydrophobic surface modified silica nanoparticles interact with the gaseous sulfur (S8(g)) present in the gas resulting in the reduction of the deposition of solid sulfur (S8(s)), The hydrophobic surface modified silica nanoparticles are selected from the group that includes silica, alumina and silica-aluminate. The hydrophobic surface modified silica nanoparticles may be added to the tubing string either dry or mixed first into a carrier fluid, which carrier fluid may be a liquid or a gas.
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公开(公告)号：US20190218442A1
公开(公告)日：2019-07-18
申请号：US16359129
申请日：2019-03-20
CPC分类号： C09K8/08 , C09K8/032 , C09K8/532 , C09K2208/20 , E21B21/003 , E21B21/062 , E21B41/02 , E21B43/26
摘要： A drilling fluid composition comprising an aqueous base fluid, a viscosifier, and a H2S scavenger comprising copper nitrate, wherein the drilling fluid composition has a H2S sorption capacity from about 4.0 to about 6.0 gram per one milliliter of the drilling fluid composition; and a method of drilling a subterranean geological formation using thereof are provided. Various embodiments of the drilling fluid composition and the method are also provided.
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公开(公告)号：US20190185739A1
公开(公告)日：2019-06-20
申请号：US16283393
申请日：2019-02-22
CPC分类号： C09K8/536 , C09K8/524 , C09K8/528 , C09K8/532 , C09K2208/32 , E21B36/008 , E21B37/00 , E21B43/267
摘要： A cleanup fluid for reducing a viscosity of a residual viscous material in fractures of a hydrocarbon-bearing formation. The cleanup fluid includes an exothermic reaction component operable to generate heat, where the heat is operable to reduce a viscosity of the residual viscous material to create a reduced viscosity material, the reduced viscosity material operable to flow from the fractures.
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10.发明授权公开(公告)号：US09919348B2
公开(公告)日：2018-03-20
申请号：US15038721
申请日：2015-04-20
发明人： Yang Peng , Funian Zhao , Zhiwei Yue , Liu Shi , Liangwei Qu , Chunfang Fan
CPC分类号： B08B3/08 , C09K8/528 , C09K8/532 , C09K2208/20 , C11D7/32 , C11D11/0041 , C23G1/24
摘要： The present disclosure relates to compositions, systems and methods for removing iron sulfide scale from a solid object, such as an oilfield component. The compositions include a carbon-carbon (C—C) double bond with an electron withdrawing group bonded to at least one of the double-bonded carbons.
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