- Products and Service
- Near-bit Measurement System
Near-bit Measurement System
BHA: MWD+LWD+NBM-Receiver+Motor+NBM-Transmitter+Bit
Features: Real-time GR image, near bit inclination offset=0.3m, GR&PWD offset=0.5m@top of Motor
| SIZE | HT-7”NBM-SYSTEM | HT-5%”NBM-SYSTEM |
| TOOL OD | 7”(178mm) | 5 1/4”(135mm) |
| HOLE SIZE | 8 3/8"-9 7/8" (214mm-251mm) |
6 1/2" (165mm) |
| LENGTH | 0.9m ((RECEIVER) | |
| INC ACCURACY | +0.1° | |
| GR RANGE | 0-250cps | |
| BIT RPM | 30-300rpm | |
| CONNECTION | 4-1/2”REG | 3-1/2”REG |
| POWER | LITHIUM BATTERY | |
| MUD TYPE | OBM&WBM | |
Data transmit by electomagnetic wave overlap mud motoer, max transmit distance 18cm- Columnar antenna with asymmetrical structure, optimized transmit frequency and power
- 60° azimuth gamma scan sector, 6 nos of sector data recorded
- Smart drilling by self-identify&switch to slide or rotate drilling
- Max temperature: 150℃
- Application for well placement, geology indentification
- Run in both OBM and WBM
- Optional funcation of S&V, PWD for drilling optimization and well control
