E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 17/10 (2006.01)
Patent
CA 2448723
A variable gauge drilling apparatus and a method for assembling a variable gauge drilling apparatus for insertion in a subject borehole. The variable gauge drilling apparatus includes: an apparatus housing having a housing size which is suitable for insertion in a subject borehole which has a subject borehole size within a design range of borehole sizes; a plurality of interchangeable borehole engaging devices having different device sizes for mounting on the apparatus housing to provide the drilling apparatus with a drilling apparatus size within a range of drilling apparatus sizes, wherein the range of drilling apparatus sizes is compatible for use of the drilling apparatus within the design range of borehole sizes; and a universal borehole engaging device mount located on the apparatus housing, wherein the mount is configured to accept for mounting any one of the plurality of interchangeable borehole engaging devices.
Cargill Edward James
Garcia Julio
Gil Nestor Humberto
Hay Richard T.
Maxwell Terrance Dean
Emery Jamieson Llp
Halliburton Energy Services Inc.
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