NaviTrak II NaviGamma is a turbine power generator and
probe-based MWD (Measurement While Drilling) providing
wellsite-selectable directional & gamma ray measurements
in real-time. The service deliverables encompass positioning
of the wellbore in a geometric target through directional
control of conventional and advanced drilling BHA assemblies.
For correlation purposes, an API calibrated gamma ray
sensor measures the natural radioactivity emitted by
the formation. Service upgrades are also flexible and
achieved through modular combinations with other advanced
Drilling & Evaluation (D&E) services. The NaviTrak
II NaviGamma sets the benchmark for MWD reliability
in the drilling industry.
II NaviGamma features scintillation gamma ray, near-bit
inclination, azimuth, tool-face reference and tool temperature.
Powered by a turbine, the tool operates within a discrete
range of specified flow rates and is not limited by
battery life or available memory space. The MWD has
a modular design and comes with 1 3/4" probes to
meet most directional drilling project requirements.
The NaviTrak II NaviGamma is also scalable in size at
the wellsite and flexible to accommodate various Non-Magnetic
Drill Collar sizes ranging from 4 3/4" to 9 1/2".
For data transmission, a mud pulser with selectable
restrictors enables optimum pulse height while reducing
the pressure drop across the tool. Data is updated continuously
using positive mud pulse telemetry. The bus architecture
allows the directional sensor and the near-bit inclinometer
to be strategically placed at the bottom of the tool