SMART Sens® Tool
Provides real-time, downhole, wireline tension measurement to help prevent pump-off, stuck toolstrings and expensive fishing operations
Applications
- E-Line cased-hole
- Plug and perf / pump down perforating (PDP)
Features and Benefits
- Accurately measures real-time tension, compression line voltage, and internal tool temperature
- Plug and Play—no special panels or hardware required
- Compatible with Warrior System and commercial
perforating switches - No field calibration required
- No internal seals or parts to maintain API RP-67 compliance
- Maximizes pumpdown efficiency and speed
- Minimizes lost time and fishing risk
- Deploys longer perforating guns in deviated wells
- Verifies plug setting and release
- Eliminates uncertainty when activating a cable release device
Tool Description
The Weatherford SMART Sens tool is a wireline tension monitoring device which maximizes efficiency and minimizes risk during challenging wireline operations. The tool provides a real-time downhole cable tension measurement which eliminates uncertainty and gives the operator increased control.
Maintaining safe cable tension downhole is challenging in highly deviated and lateral wells because surface measurements do not account for friction. If the cable tension is allowed to become too low, then slack cable and released torque can cause cable damage. If the tension is allowed to become too high, during pump down operations for example, the weak point can be unintentionally broken. Increased visibility of downhole events such as plug setting and perforating guns firing can be valuable also where surface tension readings are inconclusive.
The SMART Sens tool is a robust and proven tool which is straightforward to use in the field. “Plug and Play’ compatibility with Warrior means that many service companies can use this tool directly with no additional surface equipment.
Specifications
Mechanical specifications
Outside diameter | 1.688 in. (42.86 mm) | 2.125 in. (53.98 mm) | 2.75 in. (69.85 mm) |
Makeup length | 2.46 in. (0.75 mm) | 2.33 in. (0.70 mm) | 2.20 in. (o.67 mm) |
Weight | 12.6 lb (5.7 kg) | 24.5 lb (11.1 kg) | 33.5 lb (15.2 kg) |
Upper connection | 1-3/16-12 UNBox | 1-3/16-12 UN Box | 1-5/8-6 ACME Pin |
Lower connection | 1-3/26-12 UN Pin | 1-3/16-12 UN Pin | 1-5/8-6 ACME Box |
Measurement Specifications
Maximum tension | 10,000 lbf |
Maximum compression | 2,000 lbf |
Resolution | 5 lbf |
Sampling rate | 10 Hz |
Other Specifications
Pressure rating | 20,000 psi (137.8 MPa) |
Temperature rating | 350°F (175°C) |
Axial shock | 5,000 f for 1.0 ms |
Maximum tensile load | 100,000 lbf |
Maximum moment force* | 7,500 lbf-ft |
*Measured at lower connection
Electrical Specifications
Maximum pass-through | 600 VDC |
Operating voltage* | 20 to 50 VDC |
Current draw | 35 mA |
*Polarity is configured to be compatible with perforating switch system used.
‡Pass through voltage of 600V is only applicable when the SMART Sens Tension Sub is
NOT powered on. When the SMART Sens Tension Sub is powered on, usually during
logging, the MAX line voltage that should be applied is 150 VDC.
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