Fred H Poettmann
Engineers at Eagle Dr, Littleton, CO
License number
Colorado 6151
Issued Date
Apr 24, 1965
Renew Date
Jan 1, 1994
Expiration Date
Dec 31, 1995
Type
Professional Engineer
Address
Address
47 Eagle Dr, Littleton, CO 80123
Professional information
Apparatus And Method For Determining Minimum Miscibility Pressure
US Patent:
5505074, Apr 9, 1996
Filed:
Jul 7, 1994
Appl. No.:
8/271927
Inventors:
I. Metin Mihcakan - Istanbul, TR
Fred H. Poettmann - Littleton CO
Richard L. Christiansen - Littleton CO
Fred H. Poettmann - Littleton CO
Richard L. Christiansen - Littleton CO
Assignee:
Marathon Oil Company - Findlay OH
International Classification:
G01N 700, G01N 3326
US Classification:
73 6445
Abstract:
An apparatus and method for determining the minimum miscibility pressure of a system comprising a gas and a liquid. A liquid-filled tube is equilibrated at a predetermined temperature and initial pressure, and pressure changes are determined as a single gas bubble is launched, rises through the tube, and stabilizes in the liquid. The measurements are repeated with fresh liquid at a series of different predetermined pressures. The minimum miscibility pressure is obtained either by finding the final pressure at which the time between launch and stabilization is constant or by evaluating the derivative of an empirically derived relationship between initial pressure and final pressure.