Near-Bit Gamma Measurement System
The Near-Bit Drilling Dynamics Monitor System integrates a drilling dynamics monitoring module into the receiver sub, enabling simultaneous acquisition of azimuthal gamma and inclination data alongside measurement and recording of RPM, weight on bit, torque, internal andannularpressure,andvibration.The system provides operators with a quantified assessment of downhole drilling conditions to improve drilling efficiency or prevent tool failures.
Product Specifications
Product Specifications
Features
● Highly integrated design for real-time multi-parameter measurements
● Wireless communication between measurement sub and MWD for ease of operation
● Electromagnetic wave transmission ensures operation under various mud conditions
Applications
● Shale Reservoir Development (SRD) and Coal Bed Methane (CBM) Drilling
Near-bit Inclination | 0 - 180°, ±0.3° |
Gamma Measurement | 0 - 1,000 API, ±10% |
Memory | 64 Mbit |
Rotation Speed | 30 - 450 rpm |
Vibration | 0 - 40 g, ±1 g |
Weight on Bit | ±300 kN (±67,400 lbs), ±5%F.S |
Torque | ±30 kN·m (±22,100 ft-lbs), ±5%F.S |
Bore Pressure | 120 MPa (17,500 psi), ±1%F.S |
Annular Pressure | 120 MPa (17,500 psi), ±1%F.S |
Max. Temperature | 150°C (302°F) |
Max. Pressure | 120 MPa (17,500 psi) |
Tool OD | Φ172 mm (6.75″) |
Battery Life | ≥200h |
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