Abstract
A new method for sealing casing is currently under development by Nu-Bore Systems. The method involves internally lining a section of the wellbore with a multi-layer spiral wrapping of a high strength, corrosion resistant metal interleaved with a high bond strength, resilient epoxy. The high strength metal is a based Cu alloy hardened to very high strength. The epoxy adhesive formulation that forms a bond between steel inner wall of casing and copper alloy strip. The copper alloy strip spiral wraps are interleaved with epoxy, and the whole system provides a high level of outward directed spring force and thus resists both internal and externally directed forces. In this report, the cost savings to the nation`s energy program was estimated to be in the range of hundreds of millions of dollars per year, and the method was judged technically feasible once certain well defined engineering obstacles are overcome. The tasks and engineering program plan are outlined.
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