RADii® Cement-Bond Tool - High Temperature


Identifies cement channeling and generates the traditional cement-bond log and a variable-density log


Applications

  • Cement-bond quality
  • Formation isolation
  • Cement channeling


Features and Benefits

  • Master calibration storage in tool memory, retrievable when no free pipe is encountered in the well
  • High-temperature (HT) rated for hostile environments


Tool Description

The Weatherford large-diameter RADii segmented cement-bond tool uses a single ceramic transmitter, a sixteen-segment receiver at 3 ft, and a single receiver at 5-ft spacing. The segmented receiver generates a cement map enabling cement-channeling identification while the single receiver generates a traditional cement-bond log (CBL) and a variable-density log (VDL).

The high-temperature RADii segmented cement-bond tool comes in 2-3/4 in. and 3-1/2 in. sizes.


Specifications

Ratings and Dimensions

 

2-3/4 in.

3-1/2 in.

Maximum temperature

475°F (246°C)

Maximum pressure

20,000 psi (138 MPa)

Outside diameter

2.75 in. (69.85 mm)

3.5 in. (88.9 mm)

Length

11.35 ft (3.46 m)

11.35 ft (3.46 m)

Weight

130 lb (59.1 kg)

185 lb (83.92 kg)

Tensile strength

Tension: 15,000 lb
Compression: 35,000 lb

Tension: 40,000 lb
Compression: 40,000 lb

Casing/tubing OD

Min: 4.5 in. (115 mm)
Max: 10.75 in. (270 mm)

Min: 4.5 in. (115 mm)
Max: 20 in. (508 mm)

Measure points

Amplitude, TT: 4.3 ft (1.3 m)
VDL, signature: 3.3 ft (1.0 m)

 

Borehole Conditions

 

2-3/4 in.

3-1/2 in.

Borehole fluids

OBM, WBM

Tool positioning

Centralized with one each centralizer above and below

Logging speed

Recommended: 60 ft/min (18.2 m/min)
Max: 100 ft (30.5 m)/min at 0.08 ft (.02 m) sample rate

 

Electrical

 

2-3/4 in.

3-1/2 in.

Current

38 mA at 130 V

82 mA at 130 V

 

Calibration

 

2-3/4 in.

3-1/2 in.

Primary

5.5 in. (13.97 cm) pressurized calibration tank

9.625 in. (24.4 cm) pressurized calibration tank

Wellsite

Free pipe, stored calibration tank waveforms on demand

RADii Cement-Bond Tool - High Temperature

Reach out to optimize reservoir performance

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