Phased Focused Acoustic Logging Tool
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Product Details
Basic Information
| Model | Diameter (mm) | Length (mm) | Weight (kg) | Pressure (MPa) | Working Temp. (°C) |
| SAK2138 | φ38 | 2190 | 8.00 | 20 | 0–85 |
| SAK2146 | φ46 | 2190 | 12.0 | 20 | 0–85 |
| SAK2155 | φ55 | 1950 | 15.0 | 20 | 0–85 |
Description
This product is a phased-focused single-transmitter dual-receiver logging tool that mainly measures the P-wave velocity of the formation. It has two modes—conventional and full-waveform. The conventional mode outputs 5 channels: acoustic first-arrival amplitude, single-receiver 1 P-wave travel time, single-receiver 2 travel time, dual-receiver P-wave interval transit time, and depth-shift compensated dual-receiver interval time. The full-waveform mode outputs the full waveforms of the two receiver crystals. The trigger threshold can be adjusted by the surface acquisition computer.
Specification
| Parameter | Full Waveform | Amplitude | Rx1 Travel Time | Rx2 Travel Time | Dual-Rx Interval | Comp. Dual-Rx Interval |
| Range | 0–2 ms | 0–1,000 mV | 100–700 μs | 100–800 μs | 125–600 μs/m | 125–600 μs/m |
| Accuracy | — | ≤±5 | ≤±5 | ≤±5 | ≤±5 | ≤±5 |
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