Product Name：NDST Net-Oriented Digitalized Sonic Tool
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Description：
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The acoustic system adopts a single-transmitter and five- receiver structure. The R5 , R4 , R3 , and R2 of the receiving transducer measure the sonic speed,. R5 and R1 measure CBL and VDL ,so it can provide sonic speed curve for formation comparison and calculate formation porosity ,In cased wells it can provide cement bonding quality information.
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FunctionTechnical specifications
The acoustic system adopts a single-transmitter and five- receiver structure. The R5, R4, R3, and R2 of the receiving transducer measure the sonic speed,. R5 and R1 measure CBL and VDL, so it can provide sonic speed curve for formation comparison and calculate formation porosity, In cased wells it can provide cement bonding quality information.
Working temperature range: | -25 --175 ℃ |
MAX pressure: | 140MPa |
Storage Temperature: | -40--70 ℃ |
shock | 100g 3D ( 11ms ) |
Vibration: | 7.5g 3D ( 10 ～ 60Hz ) |
△T measurement range: | 40 ～ 198μs／ ft |
△T measurement accuracy: | △T is ±2μs / ft in the range of 40 to 60μs/ft |
△T is ±3μs / ft in the range of 60 to 198μs/ft |
Vertical resolution: | 600mm |
Detection depth: | 100mm |
Waveform sampling interval: | ≤ 2μs |
Waveform sampling length: | ＞ 2ms |
MAX logging speed: | 1800m / h |
Fluid property and caliper | Oil-based or water-based mud;boreholesize:120-246mm |
Source distance 3′ ( 0.92m ), spacing 6″ ( 15.24cm ) |
Resonance frequency of T/R transducer | 16K ～ 18KHz |
Power supply: | 250VAC , 50Hz |
length: | 3470 mm |