Flooding method using salt-insensitive polymers for better mobility control
Abstract
To protect the back portion of an aqueous solution of a salt-sensitive polymer from degradation by the brine drive fluid, a salt-insensitive biopolymer slug was inserted between the salt-sensitive polymer flood and the brine. With this arrangement the brine may contain up to 100,000 ppM or more TDS and a greater concentration than 50 ppM of divalent cations. A Berea slab was saturated with brine, flooded with crude oil (viscosity 6 cp at ambient temperature), and waterflooded with brine. A micellar dispersion followed by a graded polymer flood of Dow 700 Pusher, then an aqueous biopolymer flood of Kelzan-M, all driven by a brine drive fluid (12,000 ppM TDS) recovered about 72 percent of the oil from the slag. The micellar slug was an aqueous solution of petroleum sulfonate (MW 420), crude oil (9 cp at ambient temperature), primary hexanol, and primary amyl alcohol.
- Inventors:
- Publication Date:
- OSTI Identifier:
- 7215976
- Patent Number(s):
- US 3707187
- Assignee:
- Marathon Oil Co.
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 02 PETROLEUM; MOBILITY; CONTROL; OIL WELLS; MICROEMULSION FLOODING; ENHANCED RECOVERY; MICROEMULSIONS; ORGANIC POLYMERS; PETROLEUM; COLLOIDS; DISPERSIONS; EMULSIONS; ENERGY SOURCES; FLUID INJECTION; FOSSIL FUELS; FUELS; MISCIBLE-PHASE DISPLACEMENT; ORGANIC COMPOUNDS; POLYMERS; WELLS; 020300* - Petroleum- Drilling & Production
Citation Formats
Knight, B L. Flooding method using salt-insensitive polymers for better mobility control. United States: N. p., 1972.
Web.
Knight, B L. Flooding method using salt-insensitive polymers for better mobility control. United States.
Knight, B L. 1972.
"Flooding method using salt-insensitive polymers for better mobility control". United States.
@article{osti_7215976,
title = {Flooding method using salt-insensitive polymers for better mobility control},
author = {Knight, B L},
abstractNote = {To protect the back portion of an aqueous solution of a salt-sensitive polymer from degradation by the brine drive fluid, a salt-insensitive biopolymer slug was inserted between the salt-sensitive polymer flood and the brine. With this arrangement the brine may contain up to 100,000 ppM or more TDS and a greater concentration than 50 ppM of divalent cations. A Berea slab was saturated with brine, flooded with crude oil (viscosity 6 cp at ambient temperature), and waterflooded with brine. A micellar dispersion followed by a graded polymer flood of Dow 700 Pusher, then an aqueous biopolymer flood of Kelzan-M, all driven by a brine drive fluid (12,000 ppM TDS) recovered about 72 percent of the oil from the slag. The micellar slug was an aqueous solution of petroleum sulfonate (MW 420), crude oil (9 cp at ambient temperature), primary hexanol, and primary amyl alcohol.},
doi = {},
url = {https://www.osti.gov/biblio/7215976},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 26 00:00:00 EST 1972},
month = {Tue Dec 26 00:00:00 EST 1972}
}