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公开(公告)号：US20210101095A1
公开(公告)日：2021-04-08
申请号：US17124676
申请日：2020-12-17
摘要： A scavenger comprising a formaldehyde sulfoxylate may be used to scavenge hydrogen sulfide (H2S) from systems that are brine or mixed production. Suitable formaldehyde sulfoxylates include, but are not necessarily limited to, sodium formaldehyde sulfoxylate, zinc formaldehyde sulfoxylate, and calcium formaldehyde sulfoxylate, potassium formaldehyde sulfoxylate, magnesium formaldehyde sulfoxylate, iron formaldehyde sulfoxylate, copper formaldehyde sulfoxylate, alkene aldehyde sulfoxylates, and combinations thereof.
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公开(公告)号：US20200347718A1
公开(公告)日：2020-11-05
申请号：US16863717
申请日：2020-04-30
摘要： This disclosure is directed to the use of a portable Surface Enhance Raman Spectroscopy method to detect, quantify, and/or monitor corrosion inhibitors that are present in fluids in a wide range of concentrations in order to manage corrosion treatment in oil and gas production and refining systems or other industrial systems and to reduce the amount of time spent in obtaining data that is reliable and useful for corrosion control.
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公开(公告)号：US11229860B2
公开(公告)日：2022-01-25
申请号：US17124676
申请日：2020-12-17
IPC分类号： B01D19/00 , C10G29/28 , C02F1/20 , B01D17/04 , C02F101/10
摘要： A scavenger comprising a formaldehyde sulfoxylate may be used to scavenge hydrogen sulfide (H2S) from systems that are brine or mixed production. Suitable formaldehyde sulfoxylates include, but are not necessarily limited to, sodium formaldehyde sulfoxylate, zinc formaldehyde sulfoxylate, and calcium formaldehyde sulfoxylate, potassium formaldehyde sulfoxylate, magnesium formaldehyde sulfoxylate, iron formaldehyde sulfoxylate, copper formaldehyde sulfoxylate, alkene aldehyde sulfoxylates, and combinations thereof.
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公开(公告)号：US10940407B2
公开(公告)日：2021-03-09
申请号：US16031876
申请日：2018-07-10
IPC分类号： B01D19/00 , C10G29/28 , C02F1/20 , B01D17/04 , C02F101/10
摘要： A scavenger comprising a formaldehyde sulfoxylate may be used to scavenge hydrogen sulfide (H2S) from systems that are brine or mixed production. Suitable formaldehyde sulfoxylates include, but are not necessarily limited to, sodium formaldehyde sulfoxylate, zinc formaldehyde sulfoxylate, and calcium formaldehyde sulfoxylate, potassium formaldehyde sulfoxylate, magnesium formaldehyde sulfoxylate, iron formaldehyde sulfoxylate, copper formaldehyde sulfoxylate, alkene aldehyde sulfoxylates, and combinations thereof.
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5.发明授权公开(公告)号：US10392712B2
公开(公告)日：2019-08-27
申请号：US15644755
申请日：2017-07-08
发明人： Zhengwei Liu , Sunder Ramachandran , Vaithilingam Panchalingam , Timothy Z. Garza , Paul Robert Stead , Stuart Edward Cook , Gordon T. Rivers , Vu Thieu , Heather McEachern
摘要： Pitting corrosion of stainless steel occurs in solutions of organic acid, such as tartaric acid, in an electrolyte solution with methanol. However, methanolic solutions containing at least one organic halide and at least one organic hydroxyl-acid and some water provide reduced pitting corrosion of stainless steel. The organic hydroxyacid may be a hydroxy acid containing 2 to 10 carbon atoms with at least one hydroxyl group and at least one carboxylic acid group, in a non-limiting example, glycolic acid. The pH of the methanolic solution may range from about 3.5 to about 8.
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6.发明申请公开(公告)号：US20190048712A1
公开(公告)日：2019-02-14
申请号：US16053087
申请日：2018-08-02
发明人： David Wayne Jennings , Paul Robert Stead , Michael J. Deighton , Sunder Ramachandran , Tudor C. Ionescu
摘要： A method for monitoring the quality, stability, and potential deposition of process treatment fluids pumped into subsea umbilical systems includes monitoring a resonator sensor in the subsea umbilical system having a fluid flowing therethrough, where the resonator sensor can be a torsional resonator or a symmetrical sensor, and the method also includes detecting a change in resonance of the resonator sensor indicating the deposition of a chemical species on the resonator sensor or significant change in process treatment fluid physical viscosity and density properties. The resonator sensor can also measure the amount of chemical species deposited. The fluid may be an organic and/or aqueous based fluid. The method includes performing at least one action in response to detecting the change, which action prevents or inhibits blockage of the subsea umbilical system.
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7.发明申请公开(公告)号：US20170306505A1
公开(公告)日：2017-10-26
申请号：US15644755
申请日：2017-07-08
发明人： Zhengwei Liu , Sunder Ramachandran , Vaithilingam Panchalingam , Timothy Z. Garza , Paul Robert Stead , Stuart Edward Cook , Gordon T. Rivers , Vu Thieu , Heather McEachern
CPC分类号： C23F11/124 , C09K8/52 , C09K8/54 , C09K2208/20 , C09K2208/22 , C09K2208/32 , C23F11/08 , C23F11/10 , C23F11/143
摘要： Pitting corrosion of stainless steel occurs in solutions of organic acid, such as tartaric acid, in an electrolyte solution with methanol. However, methanolic solutions containing at least one organic halide and at least one organic hydroxyacid and some water provide reduced pitting corrosion of stainless steel. The organic hydroxyacid may be a hydroxy acid containing 2 to 10 carbon atoms with at least one hydroxyl group and at least one carboxylic acid group, in a non-limiting example, glycolic acid. The pH of the methanolic solution may range from about 3.5 to about 8.
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8.发明申请公开(公告)号：US20170306247A1
公开(公告)日：2017-10-26
申请号：US15644745
申请日：2017-07-08
发明人： Sunder Ramachandran , Vladimir Jovancicevic , Ying H. Tsang , Michael P. Squicciarini , Philippe Prince , Jianzhong Yang , Kyle C. Cattanach
IPC分类号： C10G29/26 , B01D53/14 , B01D53/48 , B01D53/52 , C10G29/22 , C02F1/68 , C10G19/04 , C10G29/20 , C10G19/02 , C02F101/10 , C02F103/36
CPC分类号： C10G29/26 , B01D53/1468 , B01D53/1487 , B01D53/1493 , B01D53/48 , B01D53/52 , B01D2251/304 , B01D2251/306 , B01D2252/103 , B01D2252/20 , B01D2252/60 , B01D2257/304 , B01D2257/306 , C02F1/683 , C02F2101/101 , C02F2101/40 , C02F2103/365 , C10G19/02 , C10G19/04 , C10G29/205 , C10G29/22 , C10G2300/202 , C10G2300/207 , C10G2300/44
摘要： Hydrogen sulfide (H2S) and/or mercaptan scavengers are chemicals that remove H2S and/or mercaptans from gas, oil and water. Water-based formulations may be made and used employing scavenging compounds having the formulae: wherein each R1, R2, R3, and R4 are the same or different and are selected from the group consisting of hydrogen, an alkyl, an alkenyl, an aryl, an acyl, a halogen, a hydroxyl, a nitro, an alkyl ester, an aryl ester, an alkyl ether, an aryl ether, a hydroxymethyl, an anhydride group, an amino, and a sulfide. In one non-limiting embodiment the compounds (A) and (B) do not contain nitrogen atoms. Water-based formulations, such as those using a protic solvent with the above compounds, work well as H2S scavengers.
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公开(公告)号：US11359126B2
公开(公告)日：2022-06-14
申请号：US17244028
申请日：2021-04-29
IPC分类号： C09K8/32 , C09K8/54 , C09K8/528 , C23G1/26 , C23F11/10 , C23F14/02 , E21B37/06 , C10G75/02 , C23F11/167
摘要： The present disclosure provides a formulation and methods for simultaneously dissolving metal sulfide scales, inhibiting acid gas corrosion, and inhibiting the formation of calcite and barite in a system having low or high shear stress conditions due to fluid movement, in which the formulation contains a THP+salt, one or more corrosion inhibitors, one or more scale inhibitors, and one or more acid corrosion inhibitors. The formulation may be applied to the system in diluted or undiluted form, and continuously or in batch style.
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公开(公告)号：US20190015763A1
公开(公告)日：2019-01-17
申请号：US16031876
申请日：2018-07-10
摘要： A scavenger comprising a formaldehyde sulfoxylate may be used to scavenge hydrogen sulfide (H2S) from systems that are brine or mixed production. Suitable formaldehyde sulfoxylates include, but are not necessarily limited to, sodium formaldehyde sulfoxylate, zinc formaldehyde sulfoxylate, and calcium formaldehyde sulfoxylate, potassium formaldehyde sulfoxylate, magnesium formaldehyde sulfoxylate, iron formaldehyde sulfoxylate, copper formaldehyde sulfoxylate, alkene aldehyde sulfoxylates, and combinations thereof.
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