Downhole depth estimation for automated subsurface navigation

This thesis proposes and evaluates a concept for downhole depth estimation by matching subsurface measurements from two sensors in a bottom hole assembly. The application of a downhole depth estimate in automated subsurface navigation has also been demonstrated. One of the key hurdles in achieving real time subsurface navigation lies in...

Design of an automatic drilling fluid measurement setup and closed-loop pH control

This thesis concerns the design and construction of an automatic drilling fluid measurement setup and the use of such setup to control the drilling fluid pH. The construction of the experimental setup include modifications to the acquired rheometer to obtain reliable batch rheology measurements within the typical viscosity range of a shear...