Table T13. Measurement performance specifications for the azimuthal sonic and ultrasonic tools, Expedition 348.
| Feature | Specification |
|---|---|
| Normal tool OD | 8 inches; 203 mm |
| Hole sizes | 10-5/8 to 12-1/4 inches; 270–311 mm |
| Length | 21 ft; 6.4 m |
| Weight | 2,940 lb; 1,334 kg |
| Connections | 6-5/8 reg box × box |
| Make-up torque | 46,000–49,000 ft·lb; 62.5–66.6 kNm |
| Max dogleg severity | |
| Rotating | 8°; 100 ft |
| Nonrotating | 14°; 100 ft |
| Maximum operating temperature | 302°F; 150°C |
| Maximum pressure | 30,000 psi; 2,069 bar |
| Maximum mass flow rate | 20,000 lb/min; 9,072 kg/min |
| Maximum sand content | 2% |
| Typical pressure loss | |
| 250 gal/min; 950 L/min | 4 psi; 0.3 bar |
| 450 gal/min; 1700 L/min | 13 psi; 0.9 bar |
| 1200 gal/min; 4550 L/min | 76 psi; 5.2 bar |
| Transducer type | Piezoelectric |
| Measurements | dT compressional, dT shear (refracted and slower than fluid) |
| Operating range | dT compressional –40 ~ +180 µs/ft; dTt shear –60 ~ +550 µs/ft |
| Accuracy | |
| dt compressional and refracted shear | ±1 µs/ft |
| dt slow shear | ±2.5 µs/ft |
| Measurement point from | 9 ft; 2.74 m |
| Bottom of tool | 8.8 ft; 2.7 m |
| Equivalent bending stiffness | 7.53 inches OD × 2.81 inches ID; 191 mm OD × 71 mm ID |
| Power supply | Battery |
| Downhole memory capacity | 2 GB |
| Standoff measurement | ±0.1 inch; 2.54 mm |
| Accuracy | |
| Range at <12 lb/gal | 4 inches; 10.16 cm |
| Range at 12–15 lb/gal | 2.5 inches; 6.35 cm |
| Range at >15 lb/gal | 1.5 inches; 38.1 cm |
| Hole size and shape | ±0.15 inch; 3.81 mm |
| Maximum hole size | Tool OD + 2 × maximum range |
OD = outer diameter, ID = inner diameter.
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