Title:
水和物の形成を抑制する方法
Document Type and Number:
Japanese Patent JP3902655
Kind Code:
B2
Abstract:
A method for inhibiting the formation of clathrate hydrates in a fluid having hydrate-forming constituents is disclosed. 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 inhibitor used for practicing the method is selected from the family of substantially water soluble copolymers formed from N-methyl-N-vinylacetamide (VIMA) and one of three comonomers, vinylpyrrolidone (VP), vinylpiperidone (VPip), or vinylcaprolactam (VCap). VIMA/VCap is the preferred copolymer. These copolymers may be used alone or in combination with each other or other hydrate inhibitors. Preferably, a solvent, such as water, brine, alcohol, or mixtures thereof, is used to produce an inhibitor solution or mixture to facilitate treatment of the petroleum fluid stream.
Inventors:
Call Carla Es
All Dandruff Russell H
Keland Markham A
All Dandruff Russell H
Keland Markham A
Application Number:
JP50318597A
Publication Date:
April 11, 2007
Filing Date:
June 06, 1996
Export Citation:
Assignee:
Exxon Mobil Upstream Research Company
International Classes:
C07C7/20; C08F226/02; F17D1/00; C08F226/06; C09K8/52; C10L3/10; F17D1/05
Domestic Patent References:
| JP62100508A | ||||
| JP61141712A | ||||
| JP9221515A | ||||
| JP9118800A |
Foreign References:
| US5491269 | ||||
| US5432292 |
Attorney, Agent or Firm:
Minoru Nakamura
Fumiaki Otsuka
Shishido Kaichi
Hideto Takeuchi
Toshio Imajo
Nobuo Ogawa
Village shrine Atsuo
Fumiaki Otsuka
Shishido Kaichi
Hideto Takeuchi
Toshio Imajo
Nobuo Ogawa
Village shrine Atsuo