1. Product usage: sector acoustic logging instrument (SBT) is used to test the cementing quality within 360-degree range of the well through the transducers on 6 polar plates, and each of which contains 2 transmitting transducers and 1 receiving transducer. Each group of transducers is tested in a mutually supplementary manner so as to achieve a better measurement. This instrument is of sidewall contact structure, which is unaffected by the well liquid and high in measuring sensitivity. 2. Product superiorities: measurement of the first interface first-wave amplitude; analysis of the first interface quality; and VDL wave collection.
1. Operating voltage: 150 V±10%. 2. Operating current: 40 mA. 3. Max. operating temperature: 175℃ (2 h). 4. Max. carrying pressure: 140 MPa. 5. Min. casing diameter for measurement: 101.6 mm. 6. Max. casing diameter for measurement: 393.7 mm. 7. Outer diameter: 89 mm. 8. Max. logging speed: 10 m/min. 9. Measuring range: 0-22 dB/ft compensated attenuator . 10. Measuring accuracy: ±1.0 dB/ft. 11. Measuring repeatability: ±1.0 dB/ft. 12. Vertical resolution: 76.2 mm. 13. Radial resolution: 60 degrees. 14. Depth error: 50.8 mm. 15. Detector: 100 KHz multilayer piezoelectric ceramics. 16. Polar plate thrust force: 23 kg.
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