The Dual Spectral Noise Tool (DNST) is used to detect the incoming noises in the wellbore generated at different spectral frequencies from different sources. By analyzing the frequency spectrum, the nature of fluids may be determined and leaks can be located. Dual receivers allow the tool to reduce the effect of road noise while logging and also provide redundancy for stop checks. Noise logging is applicable to oil/gas/water wells. It increases the success rate of locating leaks and channeling in tubulars. When combined with temperature and flow rate measurements, extensive quantitative interpretation can be performed. Real time monitoring combined with the ability to save the audio to digital file provides ability to meet greater compliance regulations.
Diameter | 1-11/16” (43mm) |
Maximum Temperature | 350° (175°c) |
Maximum Pressure | 15,000psi (100MPa) |
Length | 33.29” (846mm) |
Materials | H₂S Tolerant |
Logging Speed | 15ft/min (300m/hr) station |
Weight | 30lb (13.7kg) |
Operating Frequency | 100Hz 12.7KHz |
Frequency Resolution | 100Hz |
Audio Output Format | Mp3 (Optional) |
Explore the frequently asked questions about the Dual Spectral Noise Tool (DSNT).
The DSNT tool analyzes the frequency spectrum of the incoming noises in the wellbore to determine the nature of the fluids and locate any leaks or channeling in the tubulars.
The DSNT tool has the ability to record sensor values in the device memory, start recording at a specified time or after a specified time, and perform algorithmic recording with different settings for time intervals. It also presents a lower environmental hazard.
The DSNT tool can be used for locating production intervals and productivity evaluation, fluid identification, flow rate evaluation, and inspection of channeling behind the casing, leaks, backflows, sand production, and the effect of packers.