摘要 |
A method for inhibiting the formation of clathrate hydrates in a fluid having hydrate forming constituents is claimed. More specifically, the method can be used in treating a petroleum fluid stream such as natural gas conveyed in a pipe to inhibit the formation of a hydrate restriction in the pipe. The hydrate inhibitors used for practicing the method comprise substantially water soluble polymers having N-vinyl amide or N-allyl amide units. Specific examples of such copolymers include, N-vinyl-N-methylacetamide (VIMA) copolymerized with acryloylpyrrolidine (APYD) or acryloylpiperidine (APID), and more preferably, VIMA copolymerized with N-substituted methacrylamides, such as N-isopropylmethacrylamide (iPMAM) and methacryloylpyrrolidine (MAPYD) to produce inhibitors for practicing the claimed method. |
申请人 |
EXXON PRODUCTION RESEARCH CO., HOUSTON, TEX., US |
发明人 |
COLLE, KARLA SCHALL, HOUSTON, TEX., US;OELFKE, RUSSEL HARLAN, HOUSTON, TEX., US;BERLUCHE, ENOCK, PHILLIPSBURG, N.J., US;COSTELLO, CHRISTINE ANN, EATON, PA., US;TALLEY, LARRY DALTON, FRIENDSWOOD, TEX., US |