Patent ID: 8387693

Claim:
A system for using a wall of a passageway through subterranean strata to generate a lost circulation material (LCM) and inhibit strata fracture initiation or propagation therein, the system comprising: at least one boring tool in communication with at least one conduit string, wherein said at least one boring tool generates rock debris at an end of said at least one conduit string; at least one apparatus comprising at least one mechanical and fluid pressure coating member adapted for breaking the rock debris, wherein at least a portion of said at least one mechanical and fluid pressure coating member is movable to transport, impel, break, or combinations thereof, the rock debris is against an impact surface of said at least one apparatus or said subterranean strata to form said LCM, wherein the rock debris and LCM are carried by a circulated fluid slurry for coating a strata wall within a fracturable region of the passageway through subterranean strata, wherein said at least one conduit string extends through said fracturable region of said passageway through subterranean strata and protrudes axially downward within a bored strata wall from an outermost protective conduit string lining an upper end of said passageway through subterranean strata, and wherein said at least one mechanical and fluid pressure coating member of said at least one apparatus is carried by said at least one conduit string and located in said fracturable region, and wherein said at least one mechanical and fluid pressure coating member engages the rock debris to perform said breaking or impelling of said rock debris against said impact surface to form said LCM and apply said LCM between said boring tool and an upper end of said fracturable region by reducing a particle size of said rock debris urged axially upward by said circulated fluid slurry for coating said bored strata wall with said at least one mechanical and fluid pressure coating member to, in use, inhibit said strata fracture initiation or propagation to increase a pressure bearing capacity of said fracturable region, formed by said bored strata wall, with said LCM.