Download Technical Brochure
Contact Expert
Email: chris.cheng@cnpcusa.com
Phone: +1 (713) 972-6518
Address: 2901 Wilcrest Drive, Suite 600, Houston, TX 77042
PressureWhileDrilling (PWD)
The CNPC USA PWD system monitors downhole drilling parameters with high accuracy to improve efficiency and overall performance. It plays a critical role in mitigating Bottom Hole Assembly (BHA) shock and vibration. Measurements are recorded and simultaneously transmitted to the surface in real-time via MWD telemetry.
Key Features
- Real-time BHA diagnostics
- Recorded and real-time measurements
- Compact, scalable architecture
- Powered by MWD, Turbine, or Battery
Benefits
- Reduced operational risks
- Improved drill efficiency and ROP
- Real-time detection of downhole problems
Integrated Sensors & Uses
The system utilizes pressure transducers, accelerometers, and gyroscopes integrated within an internal cartridge. Key uses include:
- Differential Pressure: Evaluates mud motor operating conditions.
- Accelerometer: Diagnoses shock and vibration dysfunctions.
- Gyroscope: Monitors tool behavior and downhole rotational dynamics.
Full Technical Specifications
| General Tool Specifications | |
|---|---|
| Borehole Size Range | 8-3/8 in. to 9-7/8 in. (212.7 – 250.8 mm) |
| Nominal / Maximum O.D. | 6-3/4 in (171.5 mm) / 7-3/8 in (187.3 mm) |
| Nominal I.D. | 2.0 inch (50.8 mm) |
| Weight / Length | 1450 lbs (657.7 kg) / 146.25 in (3.7 m) |
| Thread Connections | Uphole: 4-1/2 I.F. Box | Downhole: 4-1/2 I.F. Pin |
| Body Materials | P550 Non-Mag SST Collar; Inconel 718 / BeCu Auxiliary |
| Elastomer (Standard) | FluoroCarbon 90D - Parker V0709 |
| Elastomer (H2S / Sour) | FluoroCarbon 95D - Parker V1238 (>20 ppm protection) |
| Operating Temp / Pressure | 32-347°F (0-175°C) / 25,000 psi (172 MPa) |
| Max Overpull / WOB | 500,000 lbs (2224 kN) / 1,000,000 lbs (4448 kN) |
| Max DLS / Torque | 10 deg / 100 ft | 30,000 ft-lbs (40,675 Nm) |
| Electronics & Mud Content | |
| Power Supply Options | Turbine Power / MWD / Internal Battery |
| Voltage Input / Consumption | 20-36 Volts / 90mA (< 5 Watts) |
| Memory Capacity / Life | 16 Gb Capacity / 200 hrs Life |
| Max Lost Circulation Material | No limit |
| Max Sand Content | 1.0% |