METHOD AND SYSTEM FOR MONITORING A LOGGING TOOL POSITION IN A BOREHOLE
First Claim
1. A method for monitoring a logging tool position in a borehole characterized by the steps of registering acoustic signals generated by passage of acoustic waves in the borehole while logging and detecting the misalignment of the logging tool to the axis of the borehole by the presence of mixed surface waves.
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Abstract
The invention relates to the area of borehole acoustics, in particular, to monitoring a logging tool position in a borehole, namely detection and estimation of a borehole logging tool eccentricity based on the measurement and analysis of mixed surface waves waveforms. The method is characterized by the steps of registering acoustic signals generated by passage of acoustic waves in the borehole while logging and detecting the misalignment of the logging tool to the axis of the borehole by the presence of mixed surface waves. A system for monitoring a logging tool position in a borehole comprising means for registering acoustic signals generated by passage of acoustic waves while logging and data processing means for detecting mixed surface waves propagating along the borehole wall.
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Citations
15 Claims
- 1. A method for monitoring a logging tool position in a borehole characterized by the steps of registering acoustic signals generated by passage of acoustic waves in the borehole while logging and detecting the misalignment of the logging tool to the axis of the borehole by the presence of mixed surface waves.
- 10. A system for monitoring a logging tool position in a borehole comprising means for registering acoustic signals generated by passage of acoustic waves while logging and data processing means for detecting mixed surface waves propagating along the borehole wall.
Specification