Patent ID: 7481280

Claim:
A method of drilling an earth borehole, comprising: providing a reel of continuous coiled casing, said coiled casing having a free end; providing an injector for moving said coiled casing; connecting a bottomhole assembly including at least a downhole motor and a drill bit to said free end of said continuous coiled casing to form a coiled casing drill string; injecting said coiled casing drill string into the earth while circulating fluid through said coiled casing to form a drilled earth borehole having a borehole wall; retrieving said coiled casing drill string from said drilled earth borehole; removing said bottomhole assembly from said free end of said coiled casing; injecting said coiled casing into said drilled earth borehole to a desired depth; suspending said injected coiled casing in said drilled earth borehole from a wellhead assembly; severing said suspended coiled casing at a location above said suspension by said wellhead assembly to form a suspended coiled casing string in said borehole, an annulus being formed between said borehole wall and an exterior surface of said suspended coiled casing string; and injecting a bonding agent into said suspended coiled casing string and into said annulus.