Additives and method for controlling clathrate hydrates in fluid systems
Abstract
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.
- Inventors:
- Issue Date:
- Research Org.:
- Colorado School of Mines, Golden, CO (United States)
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 512418
- Patent Number(s):
- 5639925
- Application Number:
- PAN: 8-358,140
- Assignee:
- Colorado School of Mines, Golden, CO (United States)
- DOE Contract Number:
- FG21-92MC29248
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 17 Jun 1997
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 03 NATURAL GAS; 02 PETROLEUM; GAS HYDRATES; PIPELINES; MITIGATION; NATURAL GAS; PETROLEUM; ADDITIVES; CHEMICAL COMPOSITION
Citation Formats
Sloan, Jr, E D, Christiansen, R L, Lederhos, J P, Long, J P, Panchalingam, V, Du, Y, and Sum, A K.W. Additives and method for controlling clathrate hydrates in fluid systems. United States: N. p., 1997.
Web.
Sloan, Jr, E D, Christiansen, R L, Lederhos, J P, Long, J P, Panchalingam, V, Du, Y, & Sum, A K.W. Additives and method for controlling clathrate hydrates in fluid systems. United States.
Sloan, Jr, E D, Christiansen, R L, Lederhos, J P, Long, J P, Panchalingam, V, Du, Y, and Sum, A K.W. Tue .
"Additives and method for controlling clathrate hydrates in fluid systems". United States.
@article{osti_512418,
title = {Additives and method for controlling clathrate hydrates in fluid systems},
author = {Sloan, Jr, E D and Christiansen, R L and Lederhos, J P and Long, J P and Panchalingam, V and Du, Y and Sum, A K.W.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {6}
}