Definitive dynamic surveys: A long-awaited engineering innovation

A survey-while-drilling service performs definitive dynamic analysis as the BHA rotates, providing significant rig-time savings compared to conventional static MWD surveys. Having an accurate but dense survey in real time enables an improved understanding oftortuosity and how to run casing and completions, anticipating potential well construction problems in real time, reducing surprises and flat times. [...]it needs to be compensated for. Separate error terms include attenuation from the accelerometers and magnetometers and the phase shift difference between the accelerometers and magnetometers, which provide an accurate idea of inclination and azimuth.