22.2.6 Use Case: Post-Process DAS Data

Version

1.1

Goal

Optionally post process the acquired data after acquisition and deliver to customer or customer’s Third Party System.

Summary Description

Post processing may include:

• Refining the depth calibration (facility mapping)
• Re-decimation or extraction of different frequency bands
• Updating or adding meta data

Actors

• DAS Project Engineer

Triggers

Acquisition complete

Pre-conditions

Acquisition complete and stored in the PRODML DAS format.

Primary or Typical Scenario

Refining the depth calibration facility mapping based on further analysis.

Re-decimation or extraction of different frequency bands

Updating or adding metadata

Converting acquired data to other industry standard formats such as SEG Y.

Alternative Scenarios

Post-conditions

Post Processed DAS data available for transfer using desired delivery media in PRODML DAS format.

Derived formats such as SEGY for vertical seismic profiles may also be produced.

Details of post processing activities should be documented accordingly in the metadata of the delivered data.

Business Rules

Notes

For specific DAS acquisition services (e.g., vertical seismic profiles or pipeline monitoring) the client may only be interested in the DAS post processed derived product (e.g., SEGY for VSP or a list of events for pipeline monitoring) and may agree with the DAS service provider to store and retain the field or reduced processed data for an agreed period.

Definitions

See Section 22.1 DAS Terminology .