Abstract: The present invention relates to methods and systems for optimizing the design of a bottomhole assembly, a reamer tool or other component of the bottomhole assembly, and/or drilling parameters of the bottomhole assembly. The method may include placing electronic modules in pockets of or adjacent to the reamer tool; reaming a borehole with the reamer tool while the modules record and store data for later retrieval; and then retrieving the data from the modules to optimize the design of the reamer tool. The modules may record vibration along three axis. The reamer tool may be a concentric reamer, an eccentric reamer, or virtually any type of reamer known in the art. In some embodiments, the bottomhole assembly may utilize a roller cone or drag bit below the reamer tool as a pilot bit.

Abstract: An apparatus and method for the transmission of information between downhole and surface locations through a drillstring. The apparatus includes a wireline extending from instrumentation at the downhole location to a clamp-off sub in the drillstring where it is connected to the lower end of a cable spooled on a cable cartridge above the clamp-off sub in the drillstring. The cable cartridge is moved upwardly through successive pipe joints added to the drillstring as drilling progresses, to permit rotation of the drillstring and use of blowout preventors without retrieving the wireline or cable. Cartridge cable is releasably connected at its upper end to a wireline extending through a pack-off to a slip ring assembly at the surface, for transmitting data from downhole instrumentation to surface equipment. Multiple cable cartridges may be sequentially added in series if drilling proceeds beyond the length of cable in a single cartridge.