
For detailed specifications and technical information, download the product brochure.
Contact Information
If you have any questions about this product, please contact us:
Email: thanh.cao@cnpcusa.com
Phone: +1 (832) 257-3456
Address: 22130 Merchants Way Ste. 190 Katy, TX.77449
Specifications
General Specifications | |
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Borehole Size Range | 8-3/8 in. to 9-7/8 in. |
Nominal O.D. | 6-3/4 in |
Maximum O.D. | 7-3/8 in |
Nominal I.D. | 2 inch |
Length | 114 in |
Weight | 818 lbs |
Thread Connections | Up-hole connection: 4-1/2 I.F. Box. Down-hole Connection: 4-1/2 I.F. Pin. |
Collar Material | P550 Non-Mag SST |
Auxiliary materials | Inconel 718, BeCu |
Elastomer material (standard) | FluoroCarbon 90D - Parker V0709 |
Elastomer for H2S | FluoroCarbon 95D - Parker V1238 |
Operating Temperature | 32-347°F / 0-175°C |
Max Operating Pressure | 25,000 psi / 172mPa |
Max Overpull (tension) | 500,000 lbs / 2224kN |
Max WOB | 1,000,000 lbs / 4448kN |
Max DLS | 10 deg / 100 ft |
Max Torque | 30,000 ft-lbs / 40,675Nm |
Electronics | |
Memory life | 200hrs |
Voltage Input | 20-36 Volts |
Power consumption | 90mA / < 5 Watts |
Downhole Memory | 16 Gb |
Interface to MWD | RS485/232, or Custom |
Mud Content | |
Max lost circulation material | No limit |
Max sand content % | 1 |
Drilling Monitoring Sub (DMS)
CNPCUSA DMS monitors down-hole drilling parameters for improved efficiency and drilling performance. Measurements are simultaneously recorded and transmitted to surface in real time with MWD Telemetry for optimized drilling and improved ROP. DMS allows you to know at-bit dynamics allowing mitigation of shock and vibration: the primary causes of downhole tool failure.
Key Features
Sour Service
The DMS utilizes three high-strength, corrosion-resistant alloys: Inconel 718, P550, and Beryllium Copper. Inconel 718 is a nickel-chromium alloy known for its resistance to a wide range of media. Nickel enhances its resistance to both inorganic and organic compounds across a broad pH range, while chromium provides protection against oxidizing and sulfur-containing environments. Additionally, molybdenum contributes to resistance against pitting corrosion. P550 is a manganese-chromium steel alloy with a high nitrogen content. The elevated nitrogen improves resistance to pitting, enhances protection against stress corrosion cracking, and supports the corrosion-resistant properties of chromium. Beryllium Copper is valued for its excellent resistance to stress corrosion cracking and its ability to maintain mechanical strength in hydrogen sulfide (H₂S)* environments.
* The standard elastomer offers partial resistance to H₂S; however, for environments with H₂S concentrations exceeding 20 ppm, a specialized elastomer is available to ensure enhanced protection.
Sensors
CNPC USA employs pressure transducers and drilling dynamics sensors integrated within a specialized collar. Measurement signals are captured, recorded, and processed using a proprietary methodology, offering operational flexibility to deliver both low-resolution real-time data and high-resolution post-run data
Uses
Benefits
Specifications
Measurements Performance | |
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Weight On Bit( WOB) | |
Design Range | ±80,000 lbs |
Operating Range | ±100,000 lbs |
Accuracy | ±5% |
Repeatability | ±1% |
Resolution | 100 lbs |
Torque On Bit (TOB) | |
Design Range | ±24,000 ft-lbs |
Operating Range | ±30,000 ft-lbs |
Accuracy | ±5% |
Repeatability | ±1% |
Resolution | 200 ft- lbs |
Bending On Bit (BOB) | |
Design Range | ±100,000 ft-lbs |
Operating Range | ±85,000 ft-lbs |
Operating DLS | 10˚/100 ft |
Accuracy | ±5% |
Repeatability | ±1% |
Resolution | 100 ft-lbs |
Max Torque | 30,000 ft-lbs / 40,675Nm |
Pressure - Bore & Annulus | |
Operating Range | 0-25 ksi |
Sample Rate | 5s |
Resolution | 0.38 psi |
Temperature - Bore & Annulus | |
Operating Range | 0-175°C |
Accuracy | ±1% |
Resolution | 0.01˚C |
Vibration - 3 Axial | |
Operating Range | ±30 g |
Sample Rate | 1,000Hz |
RPM | |
Range | ±333 |
Accuracy | ±1 |
Data Acquisition | |
Sample rate | 1,000Hz |
Process time | 3s |
Update frequency | 5s |