Abstract: A method for logging a wellbore includes actuating a positioning device to adjust the position of a module relative to a reference point or object such as a wellbore axis or proximally positioned downhole device. With respect to a wellbore, an exemplary positioning device can set the measurement tool such as an acoustic device to successive radial positions (e.g., substantial concentricity or substantial eccentricity relative to an axis of the wellbore). In one embodiment, the module includes a measurement tool to measure different parameters of interest (e.g., acoustic logging data, check-shot data measurement, bonding of cement to casing). With respect to an adjacent downhole device, the positioning device can provide a selected relative orientation (e.g., azimuth, inclination, radial displacement) between the module and the adjacent downhole device. The positioning device can also be adapted to apply a jarring force to a wall of the wellbore to free a downhole device.

Abstract: Method for generating a composite logging data base from two separate historical data bases in a form suitable for further on-site computerized analysis and processing. A generalized system is provided for automatically producing, as a function of a plurality of elected options, an output which is either a merger of logging curves from the two data bases, a replacement of one or more logging curves or portions thereof from one data base with those of a correlative curve or curves from the second data base, or a splice of one or more logging curves from one data base derived over one borehole increment with a curve or curves from the second data base derived over a different borehole increment, with further provision for automated renaming and reordering of curves as they appear in the output as well as compatibility checks between the two data bases thus being combined in terms of logging parameters and borehole increments as a function of the elected option.