OPTIMIZATION OF A REFERENCE LENGTH FOR SIGNAL PRESERVATION AND PROCESSING OF A REFERENCE LENGTH FOR DISTRIBUTED VIBRATION DETECTION

摘要

The present invention relates to techniques that facilitate the use of a distributed vibration detection system to collect data in a well application to achieve improved collection of stress-related data, such as for seismic prospecting. The techniques facilitate the selection of a variable optimal reference length that optimally preserves the bandwidth of a signal and the temporal resolution of the detection system and that can be adjusted using the actual apparent speed and the maximum recoverable frequency. monitored parameters. Also disclosed are techniques for real-time processing of DVS data using a preliminary variable optimal reference length, as well as techniques for re-processing the DVS data at a later time using an updated variable optimal reference length that is disclosed. is derived from the preliminary processing of DVS data.