Isolation liner incorporating a drill pipe with swell packers

摘要

An isolation liner incorporating a drill pipe and a swell packer, the swell packer configured to simultaneously cut and seals a wellbore, or slide down and seal a wellbore having a swellable section and a pair of end rings. The end rings couple the cylindrical body to the swellable wellbore packer section. Each end ring forms an annular abutment surface that cooperates with the swellable member to inhibit axial movement of the swellable member on the substantially cylindrical body. On each end ring, at least one diamond cutter insert, polyamide button, and/or tungsten carbide blocks is installed circumferentially and spaced apart symmetrically or near-symmetrically on the end ring.

主权项

1. An isolation liner connected to a drill pipe with at least one swell packer, the at least one swell packer engaging the isolation liner and the drill pipe, the at least one swell packer configured to simultaneously cut and seal a wellbore, wherein the at least one swell packer comprises:
a. a swellable wellbore packer section comprising:
(i) a substantially cylindrical body; and(ii) a swellable member disposed on the substantially cylindrical body, the swellable member comprising a material selected to expand on exposure to at least one triggering fluid to create a seal in the wellbore; b. a pair of end rings configured to sealingly engage the substantially cylindrical body to the swellable wellbore packer section, wherein each of the end rings form an annular abutment surface that cooperates with the swellable member to inhibit axial movement of the swellable member on the substantially cylindrical body, wherein each of the end rings comprises a first ring, a second ring, and a shoulder having a circumferentially contiguous interior surface between the first ring and the second ring; and c. a plurality of diamond cutter inserts installed circumferentially and spaced apart symmetrically or near-symmetrically on at least one end ring of the pair of end rings.