Method and apparatus for testing and treating well formations

Details Method and apparatus for testing and treating well formations Method and apparatus for testing and treating well formations

1976-07-23

1977-06-28

Novosad, Stephen J.

Wells

Processes

Sampling well fluid

166184, 166315, 166307, 166317, 166318, E21B 4300, E21B 4327, E21B 4700

Patent

active

040319571

ABSTRACT:
A single trip method of testing and treating a down hole formation in which conventional drill stem testing can be carried out followed by acidizing or other treatment of the formation without the need to remove the drill stem test string, the method employing a well tool in the operating tool string which allows reverse circulation to clean out the tool string following the initial drill stem test, allows the introduction of acidizing fluid into the formation and permits a second reverse circulation following acidizing and subsequent testing, the well tool being operative without the necessity for rotation of the tool string.

REFERENCES:
patent: 2947363 (1960-08-01), Sackett et al.
patent: 3134439 (1964-05-01), Shields, Jr.
patent: 3351135 (1967-11-01), Jensen
patent: 3353609 (1967-11-01), Jensen
patent: 3358755 (1967-12-01), Chisholm
patent: 3358767 (1967-12-01), Reardon
patent: 3388745 (1968-06-01), Cole
patent: 3422896 (1969-01-01), Nutter
patent: 3850240 (1974-11-01), Conover
patent: 3976136 (1976-08-01), Farley et al.

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