Weatherford’s ExTG™ electronic explosion-proof torque gauge system provides precise measurement and control of torque applied by a power tong. It can also be use for measurement of pressure, using a 4- to 20-mA pressure transducer in place of the load cell. Programmable values can be set to automatically terminate hydraulic supply to the tong with the included dump valve. The ExTG™ system can record and display 0 to 999,000 ft-lb (0 to 1,355 kNm) of torque or pressure at 16-bit resolution, depending on the load cell or pressure transducer measuring range. The gauge accepts all 4- to 20-mA load cells and pressure transducers and can be programmed for any arm length between 7.0 and 99.9 ‘‘ (178 and 2,537 mm). This easy-to-use system is designed to operate with all existing Weatherford power tongs as well as other manufacturers’ tongs that use standard load cells; other load cells are available on request. The system is ATEX certified for use in hazardous locations and is accepted by the USCG for operation in the United States.

Applications

• Running and pulling tubing, casing, and drill pipe strings
• Pre-assembly of bottomhole assemblies and downhole tools (when used with bucking units)
• Measurement and control of all power tongs for casing, tubing, and drill pipe installation
• Permanent electronic recording of critical makeup data
• Data export to external software

Options

• Non-standard load cells are available on request
• Required power supply (AC and/or battery pack complete with charger) must be specified when order is placed
• A pressure transducer for measurement of fluid or air pressure is available

Features, Advantages and Benefits
1.More than 5,000 makeups or breakouts can be stored on the removable memory card, using a standard file system readable by a CF-card interface
2.Soft-selectable acceptance codes accelerate entry of special identification markers for specific downhole components or accessories
3.Two power supply options make the ExTG™ system compatible with virtually all power systems found on the rig: an external 115/230 V, 50/60 Hz AC power supply and battery charger; or an optional battery power system which provides a minimum of 12 hr of continuous operation while using the dump valve
4. Software-driven power status indication provides early warning of low battery to help avoid interruption to running and pulling operations
5.The ExTG™ system is equipped with an internal real-time clock so that each makeup or breakout is time and date stamped to help analyze job performance and efficiency
6. The wide operating temperature range makes the ExTG™ system suitable for most global climates where remote drilling and workover operations occur
7. Two-millisecond dump valve reaction and 16- bit processor provide very accurate torque control, helping to achieve the best possible connection integrity
8.The ExTG™ system can be tong mounted for operator convenience and safety
9.The ExTG™ unit is protected by a shock-proof mounting
10.The high-contrast LCD screen provides excellent readability
11.Built-in software features an intuitive user interface