Wells – Processes – Cementing – plugging or consolidating
Patent
1996-08-02
1998-01-27
Tsay, Frank
Wells
Processes
Cementing, plugging or consolidating
166142, 175215, E21B 2300
Patent
active
057113750
ABSTRACT:
The present invention relates to tools and methods for stabilizing incompetent or otherwise unstable subterranean zones or formations penetrated by a well bore during drilling. The methods basically comprise drilling the well bore through an unstable subterranean zone or formation when it is encountered, pumping a fluid through a well stabilization tool while moving the tool through the portion of the well bore in the unstable zone or formation whereby fluid jets formed by the well stabilization tool enlarge the diameter of the well bore by fluid jet erosion, pumping a hardenable cementitious material through the well stabilization tool while moving the tool through the enlarged portion of the well bore whereby the enlarged portion is filled with the hardenable cementitious material, allowing the cementitious material to harden and then drilling the well bore through the hardened cementitious material.
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Beirute Robert M.
Duell Alan B.
Murray Dick A.
Ravi Krishna M.
Rogers Henry E.
Dougherty, Jr. C. Clark
Halliburton Company
Roddy Craig W.
Tsay Frank
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