An apparatus for conducting earth borehole operations, comprising a base, a mast mounted on the base, and an integrated unit comprising a top drive and a coil tubing injector carried by the mast for longitudinal movement therealong. The top drive has an opening therethrough whereby coil tubing from the injector can pass through the top drive. There is a guide for coil tubing, the guide being selectively releasably connected to the coil tubing injector and mounted on the mast and selectively movable between a first position wherein coil tubing from the guide can be stabbed into the injector and a second position wherein coil tubing from the guide is out of alignment with the coil tubing injector.