FLUIDIC SPEED OF SOUND MEASUREMENT USING PHOTOACOUSTICS

摘要

A wellbore tool for determining a speed of sound of a fluid sample, such as a hydrocarbon sample or a wellbore fluid, is described herein. The wellbore tool includes a photoacoustic system for analyzing the fluid sample. The photoacoustic system includes a laser system that generates a laser pulse, an interface disposed between the fluid sample and the laser system, and an acoustic detector that receives an acoustic pulse that is generated in response to absorption of the laser pulse. The acoustic pulse is generated when the laser pulse is absorbed by the fluid sample or the interface. This acoustic pulse then moves through the fluid sample and is detected by the acoustic detector. The acoustic pulse is then used to determine a speed of sound of the fluid sample.

主权项

1. A wellbore tool comprising:
a photoacoustic system comprising:
a laser system that is configured to generate a laser pulse;an interface disposed between the fluid sample and the laser system, wherein the laser pulse enters the interface; andan acoustic detector configured to receive an acoustic pulse that is generated in response to absorption of the laser pulse.