Abstract: A method for evaluating drilling unit performance includes automatically identifying at least one operating state of a drilling unit during operations thereof that is independent of conditions in a wellbore. Start times and stop times of the at least one operating state are determined. The automatically identifying and determining start and stop times are performed by comparing at least one drilling unit operating parameter measurement to a set of stored measurements corresponding to the operating state. An elapsed time of the at least one operating state is determined from the start times and the stop times. The elapsed time for the drilling unit is compared to a predetermined reference standard.

Abstract: A method for determining start and stop times of at least one selected operation on a pipe deployment vessel includes measuring either or both tension on a pipe deployed from a reel on the vessel and velocity of pipe motion with respect to the vessel. Rotational velocity of the reel is measured. Geodetic position of the vessel with respect to time is measured. The start and stop times of the at least one selected operation are determined from the measured tension, motion velocity, rotational velocity and geodetic position. The start and stop times are recorded.

Abstract: A method for determining start and stop times of at least one selected operation on a pipe deployment vessel includes measuring either or both tension on a pipe deployed from a reel on the vessel and velocity of pipe motion with respect to the vessel. Rotational velocity of the reel is measured. Geodetic position of the vessel with respect to time is measured. The start and stop times of the at least one selected operation are determined from the measured tension, motion velocity, rotational velocity and geodetic position. The start and stop times are recorded.