[특허]Water-based formulation of H2S/mercaptan scavenger for fluids in oilfield and refinery applications

Baker Hughes Incorporated

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Water-based formulation of H2S/mercaptan scavenger for fluids in oilfield and refinery applications

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C10G-029/26 C02F-001/68 C10G-019/02 C10G-019/04 C10G-029/20 C10G-029/22 B01D-053/48 B01D-053/52 C02F-101/10 C02F-103/36 B01D-053/14
출원번호	US-0172370 (2011-06-29)
등록번호	US-9708547 (2017-07-18)
발명자 / 주소	Ramachandran, Sunder Jovancicevic, Vladimir Tsang, Ying H. Squicciarini, Michael P. Prince, Philippe Yang, Jianzhong Cattanach, Kyle C.
출원인 / 주소	Baker Hughes Incorporated
대리인 / 주소	Mossman, Kumar & Tyler, P.C.
인용정보	피인용 횟수 : 0 인용 특허 : 14

초록
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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 embodim...

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1. A method for scavenging hydrogen sulfide from a fluid comprising: contacting the fluid with an effective amount of a protic composition to reduce the amount of hydrogen sulfide as compared to an identical method absent the protic composition, the protic composition consisting of: a protic solvent;optionally a base selected from the group consisting of sodium hydroxide, potassium hydroxide and combinations thereof; anda non-nitrogen-based compound having a formula selected from the group consisting of: 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, an alkyl ester, an aryl ester, an alkyl ether, an aryl ether, a hydroxymethyl, an anhydride, and a sulfide, and where the fluid is selected from the group consisting of: an aqueous phase,a gaseous phase,a mixture of an aqueous phase and a gaseous phase,a mixture of an aqueous phase and a hydrocarbon phase, anda mixture of an aqueous phase, a gaseous phase and a hydrocarbon phase. 2. The method of claim 1 where the protic composition has a pH of greater than 9. 3. The method of claim 1 where the protic composition has a pH of from about 11 to about 13. 4. The method of claim 1 where the base is present at a concentration effective to give the composition a pH of greater than 9. 5. The method of claim 1 where the method scavenges H2S from a fluid selected from the group consisting of an aqueous phase and mixtures of an aqueous phase and a hydrocarbon phase and the compound is present in the protic composition at a concentration of from about 50 to about 1000 ppm by mass. 6. The method of claim 5 where the method is practiced in a refinery. 7. The method of claim 1 where the method scavenges H2S from a gaseous phase and the method is practiced by a process selected from the group consisting of: contacting the gaseous phase with droplets of the protic composition; andpassing the gaseous phase through the protic composition, where the compound is present in the protic composition in a concentration of at least 50 vol%. 8. A method for scavenging hydrogen sulfide from a fluid comprising: contacting the fluid with from about 50 weight % to about 99 weight % of a protic composition to reduce the amount of hydrogen sulfide therein, the protic composition consisting of: a protic solvent;optionally a base selected from the group consisting of sodium hydroxide, potassium hydroxide and combinations thereof; anda non-nitrogen-based compound having a formula selected from the group consisting of: 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, an alkyl ester, an aryl ester, an alkyl ether, an aryl ether, a hydroxymethyl, an anhydride, and a sulfide where the protic composition has a pH of greater than 9 and the protic composition contains at least about 50 ppm by mass of the compound, and where the fluid is selected from the group consisting of: an aqueous phase,a gaseous phase,a mixture of an aqueous phase and a gaseous phase,a mixture of an aqueous phase and a hydrocarbon phase, anda mixture of an aqueous phase, a gaseous phase and a hydrocarbon phase. 9. The method of claim 8 where the composition has a pH of from about 11 to about 13. 10. The method of claim 8 where the base is present at a concentration effective to give the composition a pH of greater than 9. 11. The method of claim 8 where the method scavenges H2S from a fluid selected from the group consisting of an aqueous phase and mixtures of an aqueous phase and a hydrocarbon phase. 12. The method of claim 11 where the method is practiced in a refinery. 13. The method of claim 8 where the method scavenges H2S from a gaseous phase and the method is practiced by a process selected from the group consisting of: contacting the gaseous phase with droplets of the protic composition; andpassing the gaseous phase through the protic composition, where the compound is present in the protic composition in a concentration of at least 50 vol %. 14. A method for scavenging hydrogen sulfide from a fluid consisting of: contacting the fluid with from about 50weight % to about 99 weight % of a protic composition to reduce the amount of hydrogen sulfide therein, the protic composition consisting of: a protic solvent;a base selected from the group consisting of sodium hydroxide, potassium hydroxide and combinations thereof; anda non-nitrogen-based compound having a formula selected from the group consisting of: 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, an alkyl ester, an aryl ester, an alkyl ether, an aryl ether, a hydroxymethyl, an anhydride, and a sulfide where the protic composition has a pH of from about 11 to about 13 and the protic composition contains at least about 50 ppm by mass of the compound, and where the fluid is selected from the group consisting of: an aqueous phase,a gaseous phase,a mixture of an aqueous phase and a gaseous phase,a mixture of an aqueous phase and a hydrocarbon phase, anda mixture of an aqueous phase, a gaseous phase and a hydrocarbon phase. 15. The method of claim 14 where the method scavenges H2S from a fluid selected from the group consisting of an aqueous phase and mixtures of an aqueous phase and a hydrocarbon phase. 16. The method of claim 15 where the method is practiced in a refinery. 17. The method of claim 14 where the method scavenges H2S from a gaseous phase and the method is practiced by a process selected from the group consisting of: contacting the gaseous phase with droplets of the protic composition; andpassing the gaseous phase through the protic composition, where the compound is present in the protic composition in a concentration of at least 50 vol %.

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Water-based formulation of H2S/mercaptan scavenger for fluids in oilfield and refinery applications

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Water-based formulation of H2S/mercaptan scavenger for fluids in oilfield and refinery applications

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