Steam generation from low quality feedwater

Details Steam generation from low quality feedwater Steam generation from low quality feedwater

1981-01-07

1983-08-16

Novosad, Stephen J.

Wells

Processes

Separating material entering well

60653, 122 1R, 166 57, 166303, E21B 4324, F22B 3318

Patent

active

043986030

ABSTRACT:
Steam is produced from low quality feedwater. A feedwater stream and a superheated steam stream are introduced into a contactor vessel where the superheated steam is contacted with the feedwater thereby producing saturated steam in the contactor vessel and precipitating minerals from the feedwater in the contactor vessel. The produced steam is withdrawn from the contactor vessel and divided into a primary stream and a secondary stream. The primary stream of produced steam is flowed to a use terminal such as a well for injecting the same into a subsurface formation as part of a steam flood system or such as a steam turbine. The secondary stream of steam is superheated and recycled to the contactor vessel. Waste water containing the solid minerals precipitated from the feedwater within the contactor vessel is withdrawn from the contactor vessel through a waste water discharge conduit.

REFERENCES:
patent: 2756208 (1956-07-01), Axelrad et al.
patent: 2947689 (1960-08-01), Cain
patent: 3159145 (1964-12-01), Strohmeyer, Jr.
patent: 3410796 (1968-11-01), Hull
patent: 3483924 (1969-12-01), Blevins et al.
patent: 3881550 (1975-05-01), Barry
Dec., 1967, Journal of Petroleum Technology, pp. 1537-1540, "The Thermosludge Water Treating and Steam Generation Process".
ERDA Publication No. 10, "Enhanced Recovery of Oil & Gas", pp. 55-57.
Report No. 72 of the First International Conference on the "Future of Heavy Crude & Tar Sands", titled "The Vapor Therm Process for Recovery of Viscous Crude Oil", by F. S. Young, Jr. and R. W. Krajicek.
Esso Process, Application No. 770,866 to the Energy Resources Conservation Board, May, 1978, FIG. 6.30.

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