Additives and method for controlling clathrate hydrates in fluid systems
Discussed is a process for preventing clathrate hydrate masses from detrimentally impeding the possible flow of a fluid susceptible to clathrate hydrate formation. The process is particularly useful in the natural gas and petroleum production, transportation and processing industry where gas hydrate formation can cause serious problems. Additives preferably contain one or more five member, six member and/or seven member cyclic chemical groupings. Additives include polymers having lactam rings. Additives can also contain polyelectrolytes that are believed to improve conformance of polymer additives through steric hindrance and/or charge repulsion. Also, polymers having an amide on which a C{sub 1}-C{sub 4} group is attached to the nitrogen and/or the carbonyl carbon of the amide may be used alone, or in combination with ring-containing polymers for enhanced effectiveness. Polymers having at least some repeating units representative of polymerizing at least one of an oxazoline, an N-substituted acrylamide and an N-vinyl alkyl amide are preferred.
- Research Organization:
- Colorado School of Mines, Golden, CO (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG21-92MC29248
- Assignee:
- Colorado School of Mines, Golden, CO (United States)
- Patent Number(s):
- US 5,639,925/A/
- Application Number:
- PAN: 8-358,140
- OSTI ID:
- 512418
- Resource Relation:
- Other Information: PBD: 17 Jun 1997
- Country of Publication:
- United States
- Language:
- English
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Method for controlling clathrate hydrates in fluid systems
Method for controlling clathrate hydrates in fluid systems