| US 7,461,694 B2 | ||
| Methods for recovering oil from an oil reservoir | ||
| Manilal S. Dahanayake, Princeton Junction, N.J. (US); Bruno Langlois, Paris (France); and Paul-Joel Derian, Villennes sur Seine (France) | ||
| Assigned to Rhodia Inc., Cranbury, N.J. (US) | ||
| Filed on Nov. 16, 2005, as Appl. No. 11/280,896. | ||
| Prior Publication US 2007/0107897 A1, May 17, 2007 | ||
| Int. Cl. E21B 43/22 (2006.01) | ||
| U.S. Cl. 166—270.1 [166/275; 166/401; 166/271; 166/305.1] | 11 Claims |
| 1. A method for enhancing the recovery of oil from a reservoir, comprising:
a) introducing a flooding fluid into the reservoir, wherein the fluid has the following:
i) water and
ii) an amount of erucyl amidopropyl betaine sufficient to provide the flooding fluid with an oil/water interfacial surface
tension of about 1 mNm or less and a viscosity of about 10 cPs or more;
b) extracting the oil through a wellbore at a location different than the point of introduction of the flooding fluid into
the reservoir.
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