SURFACTANT BASED ENHANCED OIL RECOVERY AND FOAM MOBILITY CONTROL
Surfactant flooding has the potential to significantly increase recovery over that of conventional waterflooding. The availability of a large number of surfactant structures makes it possible to conduct a systematic study of the relation between surfactant structure and its efficacy for oil recovery. Also, the addition of an alkali such as sodium carbonate makes possible in situ generation of surfactant and significant reduction of surfactant adsorption. In addition to reduction of interfacial tension to ultra-low values, surfactants and alkali can be designed to alter wettability to enhance oil recovery. An alkaline surfactant process is designed to enhance spontaneous imbibition in fractured, oil-wet, carbonate formations. It is able to recover oil from dolomite core samples from which there was no oil recovery when placed in formation brine.
- Research Organization:
- Rice University (US)
- Sponsoring Organization:
- (US)
- DOE Contract Number:
- FC26-03NT15406
- OSTI ID:
- 823419
- Country of Publication:
- United States
- Language:
- English
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