Method of increasing the permeability of subterranean reservoirs

Details Method of increasing the permeability of subterranean reservoirs Method of increasing the permeability of subterranean reservoirs

1978-10-26

1980-03-25

Novosad, Stephen J.

Wells

Processes

Placing fluid into the formation

166308, 166193, E21B 4326, E21B 4327

Patent

active

041945662

ABSTRACT:
A method of acidizing and/or fracturing a subterranean reservoir with a minimum of damage to the reservoir by the displacement fluid used to displace the acidizing or fracturing fluid into the reservoir and by the fluid used to kill the well wherein a restriction means having a seat for a closure means is located in a well conduit above a point of fluid entry into the reservoir, a slug of acidizing and/or fracturing fluid is injected into the reservoir, a slug of displacement fluid containing the closure means is injected down the well conduit, and a slug of weighted kill fluid is injected down the well conduit, said injection continuing until the closure means seats in the seat.

REFERENCES:
patent: 2186349 (1940-01-01), Simmons
patent: 2796130 (1957-06-01), Huber
patent: 2973035 (1961-02-01), Brown
patent: 3028914 (1962-04-01), Flickinger
patent: 3219113 (1965-11-01), Ward
patent: 3289762 (1966-12-01), Schell et al.
patent: 3299955 (1967-01-01), Page, Jr.
patent: 3547197 (1970-12-01), Chevalier et al.
patent: 3547198 (1970-12-01), Slusser
Kimmel, J. W., "A New Deep Gas Well Design which Permits Use of the Most Advanced Completion Techniques," 18th Annual Southwest Short Course Assoc. Meeting Proceedings, pp. 15-26, (1971).

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