Wells – Processes – Cyclic injection then production of a single well
Patent
1980-09-26
1983-10-11
Novosad, Stephen J.
Wells
Processes
Cyclic injection then production of a single well
166271, 166274, E21B 4320, E21B 4327
Patent
active
044086644
ABSTRACT:
A method of oil recovery from subterranean formations, and especially water wet sand formation, comprising the steps of sequentially establishing a rate of oil production for the formation as a function of formation characteristics, such as perosity, permeability, depth of formation and past production from the formation. Second, injecting into the formation a bank of chilled water solution containing carbon dioxide gas and citric acid and phosphoric acid. Third, driving the bank of water solution from the injection well by any suitable means to the production well and withdrawing oil from the production well at the established rate of oil production. The method is especially adapted as a tertiary oil recovery method and effectively provides a 70% horizontal and vertical sweep of the formation.
REFERENCES:
patent: 1899497 (1933-02-01), Doherty
patent: 2669307 (1954-02-01), Mulholland et al.
patent: 2765039 (1956-10-01), Bond et al.
patent: 2823751 (1958-02-01), Offeringa
patent: 2875833 (1959-03-01), Martin
patent: 3076762 (1963-02-01), Dill
patent: 3135326 (1964-06-01), Santee
patent: 3279538 (1966-10-01), Doscher
patent: 3948324 (1976-04-01), Lybarger
patent: 4044833 (1977-08-01), Volz
McAfee Catherine A.
Novosad Stephen J.
Santee Jack H.
Santee Robert P.
Suchfield George A.
LandOfFree
Secondary oil recovery method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Secondary oil recovery method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Secondary oil recovery method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1270558