Data Extraction

With the increasing popularity of Distributed Acoustic Sensor (DAS) data, hundreds of hard-drives are flooded with unmanageable data. It cannot be processed, it cannot be loaded into a simple program, it can barely be viewed.

Part of ISP’s DFO System, SP²S can extract all the relevant information from raw DAS data with high-speed calculations and export it in time-indexed LAS format. The processed data size is 8,000 times smaller than the raw data: for the same data, instead of 15 hard-drives, just one 4GB USB drive is necessary. The LAS files can be imported in any compatible software for reviewing and analysis.

Vendor neutral

SP²S accepts any type of DAS data. Many vendor formats, both in-house original formats and HDF5 unified formats, are already part of SP²S. Our development team is always available to extend the importing capabilities of SP²S with additional formats. Multiple hard-drives can be processed simultaneously as SP²S will autonomously scan through the designated list of hard-drives to be processed.

Impressive data reduction

An average hydraulic fracturing monitoring day amounts to 30 TB of raw DAS data which can be stored on 10 to 15 hard-drives. Once processed by SP²S, the raw data on the hard-drives will still be there but SP²S will have exported only about 4 GB of processed data. All the same information, 8,000 times less space.  SP²S is also designed to perform real-time monitoring in which case storage becomes unnecessary.

No data loss

SP²S performs a series of complex manipulations on the data to extract relevant information to cover a wide range of surveillance purpose. The data is normalized and the signal to noise ratio is optimized. The energy is extracted out of the signal and filtered in two ways: frequency banding (Energy Bands) and time window (Frequency Spectrum). The data processing is performed without losing any relevant information.