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
voltage*  ‡

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.

SMART Sens Tool

Reach out to optimize reservoir performance

Please fill in the form below for more information on our comprehensive and high-resolution technologies. You will hear from one of our wireline representatives shortly.

Thank you for contacting us.

Your request is being directed to the appropriate person in our organization.

We will be in touch soon.