US4153575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for transportation of viscous hydrocarbons by pipeline
Assignee: Texaco Inc
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Filing: 1978-01-11
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Granted: 1979-05-08
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Expires: 1998-01-11
Abstract
Abstract A method of transporting viscous hydrocarbons which involves introducing into a pipeline or well-bore with the viscous hydrocarbons a solution containing an oxyalkylated anionic surfactant such as sodium nonyl phenol polyoxyethylene sulfonate or a mixture of such surfactants and, optionally, with an alkalinity agent thereby forming a low-viscosity, salt-tolerant oil-in-water emulsion.
Inventors
- 👤 George Kalfoglou
- 👤 Kenoth H. Flournoy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:57
CPC Classifications
F; F17; F17D; F17D1/00; F17D1/08; F17D1/16; F17D1/17; C; C09; C09K; C09K23/00; C09K23/12; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/02; Y10S516/03; Y10S516/905; Y10S516/909; Y10S516/91; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
An aqueous solution for use in forming oil-in-water emulsions comprising 0.01 to about 2.5 weight percent of a surfactant of the formula: R.sub.c O(C.sub.2 H.sub.4 O).sub.r --(C.sub.3 H.sub.6 O).sub.s --(C.sub.2 H.sub.4 O).sub.t CH.sub.2 CH.sub.2 SO.sub.3 M, wherein R c is selected from the group consisting of alkyl of from 10 to 25 carbon atoms; ##STR8## wherein R d is alkyl of from 8 to 25 carbon atoms, and ##STR9## wherein R e is alkyl of from 8 to 25 carbon atoms, r is an integer of from 2 to about 10; s is an integer of from 1 to about 8; t is an integer of from 2 to about 10, and the sum of r+s+t is not more than 20, wherein at least 60 percent of the oxyalkylene units are oxyethylene units and wherein M is selected from the group consisting of sodium, potassium, lithium and the ammonium ion and wherein the said aqueous solution contains from about 0.01 to about 1.0 weight percent of an alkalinity agent selected from the group consisting of sodium hydroxide, potassium hydroxide and lithium hydroxide.
Claim 2
Dependent Claim
182 words
An aqueous solution for use in forming oil-in-water emulsions comprising 0.01 to about 2.5 weight percent of a surfactant of the formula: R.sub.c O(C.sub.2 H.sub.4 O).sub.r --(C.sub.3 H.sub.6 O).sub.s --(C.sub.2 H.sub.4 O).sub.t CH.sub.2 CH.sub.2 SO.sub.3 M, wherein R c is selected from the group consisting of alkyl of from 10 to 25 carbon atoms; ##STR8## wherein R d is alkyl of from 8 to 25 carbon atoms, and ##STR9## wherein R e is alkyl of from 8 to 25 carbon atoms, r is an integer of from 2 to about 10; s is an integer of from 1 to about 8; t is an integer of from 2 to about 10, and the sum of r+s+t is not more than 20, wherein at least 60 percent of the oxyalkylene units are oxyethylene units and wherein M is selected from the group consisting of sodium, potassium, lithium and the ammonium ion and wherein the said aqueous solution contains from about 0.01 to about 1.0 weight percent of an alkalinity agent selected from the group consisting of sodium hydroxide, potassium hydroxide and lithium hydroxide.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-05-07 | 1982-11-06 | 1983-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-07 | 1986-11-06 | 1987-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-07 | 1990-11-06 | 1991-05-08 | $7700.00 | Window Closed / Lapsed |