Scale removal treatment

Details Scale removal treatment Scale removal treatment

1985-11-21

1987-11-24

Suchfield, George A.

Wells

Processes

Cementing, plugging or consolidating

166312, 252 8552, E21B 3706

Patent

active

047082070

ABSTRACT:
A method for treating a subterranean formation, or a well penetrating the formation, comprises injecting into the well an aqueous composition containing an aminopolycarboxylic acid and water-soluble organosilicon compound. By use of the method, scale is removed from well equipment and/or openings in the formation, and fine particles within the formation are stabilized to prevent their subsequent movement, resulting in increased, more stable fluid flow through the formation and well.

REFERENCES:
patent: 2877848 (1959-03-01), Case
patent: 3793209 (1974-02-01), Thompson
patent: 4215000 (1980-07-01), De Jong et al.
patent: 4479543 (1984-10-01), Kalfayan et al.
patent: 4495996 (1985-01-01), Meyers et al.
patent: 4498538 (1985-02-01), Watkins et al.
C. M. Shaughnessy and W. E. Kline, "EDTA Removes Formation Damage at Prudhoe Bay," Journal of Petroleum Technology, Oct. 1983, pp. 1783-1791.
U.S. Patent Application Serial No. 750,319, filed Jun. 28, 1985, in names of David R. Watkins, Leonard J. Kalfayan, and Gregory S. Hewgill.

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