Wells – Processes – With indicating – testing – measuring or locating
Patent
1984-05-01
1986-05-20
Novosad, Stephen J.
Wells
Processes
With indicating, testing, measuring or locating
166273, 166274, E21B 4316
Patent
active
045894868
ABSTRACT:
The disclosed invention is a method of recovering hydrocarbons by determining the critical concentrations of various crude oil components to carbon dioxide to achieve first contact miscibility of a mixture of said crude oil components and carbon dioxide with the underground hydrocarbons at formation temperature and a selected pressure substantially lower than first contact miscibility pressure of carbon dioxide with the hydrocarbons; injecting into the formation a premixed transition zone slug comprising carbon dioxide and said crude oil components at said critical concentrations, formation temperature and said selected pressure; and injecting a drive fluid into the formation after the premixed transition zone slug.
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Alves Gerald W.
Brown Alfred
Haynes Stewart
Lim Frank H.
Delhommer Harold J.
Kisliuk Bruce M.
Novosad Stephen J.
Park Jack H.
Priem Kenneth R.
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