Wells – Processes – Repairing object in well
Patent
1995-05-15
1996-04-02
Suchfield, George A.
Wells
Processes
Repairing object in well
166281, 166283, 166292, E21B 3313, E21B 33138
Patent
active
055032273
ABSTRACT:
The present invention relates to a method of terminating undesirable gas migration in a well through one or more passages such as channels and microannuli in the cement sheath holding the casing in the well bore. The methods basically comprise forming one or more lateral openings through the casing and the cement sheath into a substantially gas impermeable formation penetrated by the well bore. One or more horizontal fractures are created in the formation extending from the lateral openings, and a fluid which sets into a substantially gas impermeable solid is deposited in the openings and fractures. The fluid is permitted to set into a substantially gas impermeable solid in the openings and fractures whereby passages in the cement sheath are plugged and gas migration is terminated.
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Cole Orville R.
Saponja Jeffrey C.
Halliburton Company
Husky Oil Drilling and Completions
Kent Robert A.
Roddy Craig W.
Suchfield George A.
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