Advanced Downhole Telemetry Applications

Applications Monitoring and control while drilling

• Vertical holes
• Directional services

Monitoring during Drill Stem Testing

• No downhole cables or wires

Extended reach wells

• Measure at Additional Distributed Nodes (ADNs) along horizontal section or at heel
• Full suite of sensors at each ADN

Controlling PWD or Under-Balanced MWD operations

• Through-flow capability

Wellbores where plugging is problematic

• Vertical or deviated holes

Drilling to kick-off point before directional services are required, or after directional services are released

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Up to 20 bps (uncompressed), update rates as fast as 5 seconds

Additional measurements available for better drilling control

Standard interface for third-party LWD sensors or logging tools

Ability to monitor horizontal section or well heel as well as at the bit – unique capabilities for ERD wells; invaluable distributed pressure data for Managed Pressure Drilling

Minimal pressure loss; compatible with under-balanced drilling

Unaffected by compressible drilling fluids, single MWD supplier for all stages of the well

Minimize personnel requirements and costs

Inherent reliability

Quality control, minimize personnel requirements, operational flexibility

Operational flexibility, reduced cost, reduced environmental impact