Products > Memory System
Noise Spectrum Tool
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Overview
The Noise Spectrum Tool is designed to measure downhole noise in the frequency range 100Hz to 12.7kHz. The downhole noise may be generated in different frequencies by the fluid flowing both inside and
outside the casing. By analyzing the frequency spectra of noise, the nature of fluids may be determined and leaks located.
The Noise Spectrum Tool is applicable to oil/gas/water wells. When combined with the temperature tool and flowmeter, the NST string features the significantly improved accuracy and success rate in locating leak and cement channeling.
Application
- Location of the production intervals and assessment of the capacity.
- Fluid characterization and flow rate assessment.
- Detection of the cement channeling behind casing, casing leaks, backflow, sand production and measurement of packer performance.
- Determination of the formation structure behind casing.
- Combination with PLT in logging.
Features
- Digital transmission
- Large detection radius
- Detect noise through multiple barriers
|
Max. Working Temperature |
175°C (347°F) (four hours) |
|
Max. Working Pressure |
140MPa (20300Psi) |
|
Storage Temperature |
-10°C ~+50°C (no more than 24hours within -26°C*-10°C) Temperature recommended: +20°C ~ +25°C |
|
OD |
43mm (1 11/16") |
|
Make-up Length |
750.5mm (29.55") |
|
Tool Length |
845.5mm (33.29") |
|
Measuring Point |
285.0mm (11.22") |
|
Transmission Mode |
Mono-conductor cable |
|
Max. Operating Current |
85mA |
|
Operating Voltage |
18V±5% |
|
Max. Logging Speed |
300m/h( 984ft/h) (excessive speed may influence measuring resolution and accuracy) |
|
Transmission Protocol |
WSHTbus |
|
Frequency Resolution |
100HZ |
|
Transducer |
Piezoceramics |
|
Operating Frequency |
100Hz-12.7KHz |
|
Curve Output |
Fve frequency curves (set freely within 100Hz-12.7KHz) |
|
Upper and Lower Threads |
KWDJ-GOC-1A |
Online ordering
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