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Overburden Drilling System
The Xs Drill continuous casing system, from GéoRocFor Accessories Inc. The Xs Drill System is simple in operation and has many advantages over conventional techniques. The same large DTH hammer is used for setting casing and for sub-casing drilling. For example, when setting 6 5/8” O.D> casing, a full size 6” hammer is used, instead of a 5” hammer. This adds more blow energy and greater flushing air at depth. The result is faster drilling and greater casing depth capability. When the casing has been set, the same 6” hammer and special 6” diameter drill bit (Square Bit ™) can be passed through the casing crown to continue drilling to a 6” diameter hole to the desired sub-casing depth. The Xs Drill system consists of just three components, the driver bit, crown bit, and the Square Bit ™. When you consider all of the advantages to this overburden drilling system, why use anything else? |
