skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: 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):
5,639,925
Application Number:
PAN: 8-358,140
Assignee:
Colorado School of Mines, Golden, CO (United States) PTO; SCA: 032000; 022000; PA: EDB-97:110156; SN: 97001827936
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, E.D. Jr., 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, E.D. Jr., 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, E.D. Jr., 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, E.D. Jr. 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}
}