GaugePro Echo near-bit reamer eliminated a 25-hour trip and enabled casing run in unstable formation
An operator challenged by unstable shale intervals and subsequent cementing issues in an offshore Norwegian field needed a more efficient way to ream the pilot hole and improve casing operations.
Baker Hughes, a GE company (BHGE), recommended its new GaugePro™ Echo digital on-command reamer. The reamer, with its near-bit placement feature and unlimited digital activation cycles, eliminates a reaming trip by drilling the rathole within a short distance of total depth (TD). The tool operates independently of pump flow rates and sends back real-time information including blade status and position, hydraulic oil pressure, temperature, and vibration, and includes a triple failsafe system to ensure it can trip out of hole. When used with an AutoTrak™ rotary steerable system bottomhole assembly (BHA), up to three reamers can be added and individually activated to provide flexibility while maintaining directional control in challenging formations.
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- Unstable formation in 12-¼ in. section mitigated by under reaming to 14-½ in.
- Cement and hole stability issues in longer ratholes, requiring a rathole distance of less than 33 ft (10 m)
- Reduced rathole by 84% from 164 ft (50 m) to 26 ft (8 m)
- Eliminated a dedicated under-reamer run
- Saved an estimated 25 hours rig time and $350,000 USD