Geology Reference
In-Depth Information
Housing Assembly and Driving Shaft Assembly with Near-bit Stabilizer.
NBMTS is composed of resistivity, natural gamma ray and deviation sensors,
electromagnetic wave transmitting antenna, control circuits and battery packs.
This measures bit resistivity, azimuthal resistivity, azimuthal natural gamma,
hole angle, gravity tool face (GTF) angle, temperature and other parameters.
Measured near-bit parameters are wirelessly transmitted to the WLRS.
Figure 10.3.1-1.
DRGDS tool architecture.
WLRS consists of an uploading data connection assembly, stabilizers,
batteries and control circuits, short-distance transmission receiving coil and
lower connector, as shown in Figure 10.3.1-3. It is connected upwardly to
DRMWD and downwardly to CAIMS. It receives electromagnetic wave signals
wirelessly from the transmitter coil below the motor. Signals are then passed to
the DRMWD unit via the uploading data connection assembly.
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