Method for inhibiting or retarding hydrate formation or agglomeration in a production effluent
US5981816A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 1997 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | May 15, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L3/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The inhibiting or retarding hydrate formation, growth and/or agglomeration in a fluid comprising water and gases, is accomplished by addition of at least one hydrosoluble homopolymer or copolymer derived from at least one nitrogen-containing monomer selected from cationic monomers, for example those containing at least one quaternary ammonium moiety, amphoteric monomers, for example those containing at least one quaternary ammonium moiety and at least one carboxylate or sulphonate moiety, and various neutral monomers, said hydrosoluble homopolymer or copolymer being neutral or anionic, or consisting of a polyampholyte. The homopolymer, copolymer or mixture of polymers optionally mixed with an alcohol is generally incorporated into the fluid to be treated at a concentration of 0.05% to 5% by weight with respect to the quantity of water in the medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.