Apparatus and method 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 on said base, said mast having first and second spaced mast tracks;
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 vertically suspended and mounted in said mast over a wellhead center, and a second position vertically suspended and laterally displaced from said wellhead center, and
a frame, said frame having a first side and a second side, said first side movably engaging said first mast track, said second side movably engaging said second mast track whereby said frame can move longitudinally along said first and second spaced mast tracks, said top drive being suspended from said frame by first and second supports, said first and second supports being pivotally secured to said frame and to said top drive, one of said supports comprising a piston-cylinder assembly whereby said top drive can be moved laterally.
2. The apparatus of claim 1 , wherein said top drive has a first frame position generally centrally of said frame between said first and second sides and a second frame position proximate one of said first and second sides.
3. The apparatus of claim 1 , wherein said mast comprises first and second spaced frame members, said first and second spaced mast tracks extending longitudinally along said first and second spaced frame members, said top drive, when in said first position, being movable along said first and second spaced mast tracks.
4. An apparatus for performing earth borehole operations comprising:
a base;
a mast mounted in said base, said mast having first and second spaced mast frame members;
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 mounted in said mast over a wellhead center, and a second position laterally displaced from said wellhead center, but between said first and second spaced mast frame members, and
a frame, said top drive being carried by said frame, said frame being longitudinally movable along said mast, said top drive being suspended from said frame by first and second supports, said first and second supports being pivotally secured to said frame and to said top drive, one of said supports comprising a piston-cylinder assembly whereby said top drive can be moved laterally, the weight of said top drive being carried by said frame.
5. The apparatus of claim 4 , wherein said first and second spaced mast frame members are provided with first and second mast tracks extending longitudinally along said first and second spaced mast frame members, respectively, wherein said frame is movable along said first and second mast tracks.