Miscible-type waterflooding: the Maraflood oil recovery process
Conference
·
OSTI ID:6382573
The Maraflood oil recovery process is a new method for producing oil under both secondary and tertiary conditions. The process can accommodate wide variations in reservoir pressure, temperature, and oil viscosity. Micellar solutions (also known as microemulsions, swollen micelles, and soluble oils) displace oil in the process. These solutions are desirable because of: (1) a 100% displacement of oil in the reservoir contacted; (2) controllable mobility; (3) the capability of being driven through the reservoir with water; and (4) stability in the presence of reservoir water and rock. Basic components of the micellar solutions include surfactants and hydrocarbons ranging from liquefied petroleum gas to crude oil. A salient feature of the process is the capability for mobility control. Slug mobility is made equal to or less than the combined oil and water mobility. Mobility control continues with a mobility buffer which prevents drive water from contracting the micellar solution. Results indicate that surfactant losses by adsorption are minimal when micellar solutions are used. Movement of surfactant through the reservoir is considered a significant achievement in the process. (19 refs.)
- OSTI ID:
- 6382573
- Country of Publication:
- United States
- Language:
- English
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