Apparatus for performing earth borehole operations
View Patent ↗An apparatus for performing earth borehole operations comprising a base or substructure, a mast mounted on the base, a top drive mounted on the mast for longitudinal movement therealong, the top drive having an opening therethrough and a coiled tubing injector mounted on the mast above the top drive such that coiled tubing from the tubing injector can pass through the opening in the top drive, the apparatus being operable to selectively use the top drive to engage and manipulate a component used in borehole operations while the coiled tubing injector is substantially inoperative and selectively operable to use the coiled tubing injector to inject coiled tubing into an earth borehole while the top drive is substantially inoperative or alternatively using the coiled tubing injector to inject coiled tubing into a tubular string being manipulated by the top drive.
1. An apparatus for performing earth borehole operations comprising:
a base;
a mast mounted in said base, said mast having first and second mast tracks, and first and second spur tracks connected to said first and second mast tracks, respectively;
a coiled tubing injector mounted in said mast for longitudinal movement therealong;
a top drive, longitudinally movable along said mast, said top drive having a first position in said mast over a wellhead center, and a second position laterally displaced from said wellhead center, said top drive being movable to said second position on said first and second spur tracks, said first and second spur tracks extending downwardly and transversely to said first and second mast tracks, respectively, such that said top drive can simultaneously be moved downwardly and transversely to said mast tracks.
2. The apparatus of claim 1 , wherein said mast comprises first and second spaced frame members, said first and second mast tracks extending longitudinally along said first and second spaced frame members, respectively, said top drive, when in said first position, being movable along said first and second mast tracks.
3. The apparatus of claim 1 , further including a switching mechanism to switch said top drive from said mast tracks to said spur tracks.
4. The apparatus of claim 1 , wherein said top drive is carried by a frame, said frame having a first side and a second side, said first side carrying a first assembly movably engaging said first mast track, said second side carrying a second assembly movably engaging said second mast track whereby said frame can move longitudinally along said mast tracks.