Telemetry Tracking During Directional Drilling

telemetry in directional drilling. The constant increase in the
complexity of the conditions for the development and operation of
fields, oil and gas production, an increase in the intensity of
development of already explored fields due to horizontal and cluster
drilling required a significant increase in the requirements for the
accuracy of diagnostics and active control of the spatial position of
the field. In general, the accuracy of measurements and the efficiency
of their processing largely determine the cost of well construction.
Directional drilling is one of the well construction methods. The most
effective directional drilling application is the development of fields
located in water areas, in swampy or rugged terrain, where the
construction of drilling rigs may violate the requirements for
environmental protection and environmental safety. Directional
drilling is also widely used in the creation of relief wells for killing
blowouts, for forming multilateral wells or deviating the lower part
of the well along the productive horizon in order to increase drainage.
Well profiles may vary, but the top of the deviated wellbore must be
vertical, followed by a deviation of the calculated azimuth.
Therefore, the main task of the telemetry system in directional
drilling is to constantly monitor the planned trajectory, as well as to
maintain the bit trajectory within the corridor that runs inside the
open formation.