System and methods for removing noise from acoustic impedance logs

A non-transitory computer-readable storage medium comprising computer-executable instructions that are executable by one or more processors to cause the one or more processors to:

• acquire noise-calibration data for a logging tool, wherein the noise-calibration data comprises data obtained by the logging tool operating under one or more calibration conditions;
• generate a noise-signature waveform for the logging tool based at least in part on the noise-calibration data;
• acquire logging data from the logging tool, wherein the logging data comprises data obtained by the logging tool operating in a wellbore under one or more operating conditions;
• generate an uncorrected logging waveform based at least in part on the logging data;
• and modify the uncorrected logging waveform based at least in part on the noise signature waveform to generate a corrected logging waveform for the wellbore;
• wherein acquiring the logging data and noise-calibration data includes emitting pulses of acoustic energy by a transducer and measuring acoustic waveforms that are returned;
• wherein the one or more calibration conditions comprise a gain that is greater than an operating gain for the logging tool and an emission voltage that is less than an operating emission voltage for the logging tool.

A system comprising:

• a logging tool configured to obtain data wherein obtaining the data includes emitting pulses of acoustic energy by a transducer and measuring acoustic waveforms that are returned;
• a logging processor comprising:
• one or more processors;
• one or more memory storing computer-executable instructions, that are executable by the one or more processors to cause the one or more processors to:
• acquire, from the logging tool, noise-calibration data obtained by the logging tool operating under one or more calibration conditions;
• generate a noise-signature waveform for the logging tool based at least in part on the noise-calibration data;
• acquire, from the logging tool, logging data obtained by the logging tool operating in a wellbore under one or more operating conditions, generate an uncorrected logging waveform based at least in part on the logging data;
• modify the uncorrected logging waveform based at least in part on the noise-signature waveform to generate a corrected logging waveform for the wellbore, wherein the one or more calibration conditions comprise a gain that is greater than an operating gain for the logging tool and an emission voltage that is less than an operating emission voltage for the logging tool.