...
Overall it is usually assumed that there are four major types of noise:
| Tool noise | Reservoir flow noise | Pipe flow noise | Completion noise | |||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Any electronic device generates the acoustic noise which may not be audible for human ear but can be easily captured by high-sensitivity noise tool | A reservoir flow generates noise as an acoustic noise as the percolation process is never laminar and micro-turbulence in pore-to-pore fluid migration dissipate the kinetic energy through acoustic waves and heat migration is accompanied by density variation which creates pressure pulse propagation which is then called the acoustic noise. | A pipe flow generates noise when it develops and acoustic noise when it starts developing a turbulence. The turbulence is accompanied by density variation which creates pressure pulse propagation which is then called the acoustic noise. | The completion elements often force turbulence in the streamlining fluid flow which again generates acoustic noise. | |||||||||||||||||||||||||||||||||||||
where
|
where
|
where
|
...