Method of using polymerized lignosulfonates for mobility control

Details Method of using polymerized lignosulfonates for mobility control Method of using polymerized lignosulfonates for mobility control

1979-08-30

1981-02-24

Leppink, James A.

Wells

Processes

Heating, cooling or insulating

166273, 166274, E21B 4382

Patent

active

042521947

ABSTRACT:
An improved method for mobility control application in viscous oil reservoirs including (a) heating a lignosulfonate solution, prior to injection into an oil bearing formation, for a period of time sufficient to produce a more viscous lignosulfonate solution (e.g., 8% sodium lignosulfonate held at 375.degree. F. for 50 hours yielding a 86 cp fluid @ 84 sec.sup.-1 measured at room temperature), (b) cooling the resulting heat treated lignosulfonate fluid to a reservoir condition and (c) injecting this fluid into the formation. Fluids produced in this manner are useful as mobility buffers during a waterflood or a micellar flood process.

REFERENCES:
patent: 3168511 (1965-02-01), King et al.
patent: 3402137 (1968-09-01), Fischer et al.
patent: 3476188 (1969-11-01), Harvey
patent: 3897827 (1975-08-01), Felber et al.
patent: 4006779 (1977-02-01), Kalfoglou
patent: 4074757 (1978-02-01), Felber et al.
patent: 4172498 (1979-10-01), Kalfoglou

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