9 Scientific apparatus and instruments namely well drilling apparatus performance monitoring sensors being sensors for determining position, determining velocity, determining acceleration, determining temperature, detecting water, detecting oil, detecting gas, determining rotation rate, determining axial force, determining torque, determining fluid flow rate; audiovisual apparatus and instruments, namely, computer, liquid crystal display (LCD) and light emitting diode (LED) monitors for displaying well drilling unit operating and drilling performance measurements; apparatus and instruments for mobile drilling unit navigation, monitoring, measuring, signalling, detection, testing and inspection, namely, electrical navigation apparatus for mobile drilling units; recorded media being computer hardware and recorded computer software for operating drilling machinery; recorded and downloadable computer software platforms for monitoring performance of drilling machinery; downloadable computer programs for operating and monitoring performance of drilling machinery; downloadable computer application software for operating drilling machinery and monitoring performance of drilling machinery; sensors for measuring performance parameters for drilling machinery being sensors for determining position, determining velocity, determining acceleration, determining temperature, detecting water detecting oil, detecting gas, determining rotation rate, determining drill bit axial force, determining torque, determining fluid flow rate.