ReM QC System

The ReM QC system is a powerful e-field solution for First Pass QC designed for 4C/4D surveys. The purpose of which is to give the operator, both on the rig and source vessel, an indication of seismic data quality. In the heart of the QC system is the First Pass QC Engine which uses a powerful and flexible PostgreSQL relational database for management of QC data for multiple surveys. The QC Engine can be integrated with any 3rd party recording system to allow for automated QC triggering and seismic record access.

When triggered by the recording system the QC Engine reads the seismic record and applies a suite of tests to ascertain data quality.

The results and attributes of each test are stored in the QC Database after which the engine notifies other system layers through a communication layer, and QC data is also transmitted back to the source vessel for remote QC. The QC display can also use historical data from the data base.

Data integrity is ensured by periodical synchronization of the source vessel and rig QC information, and missing seismic records due to missed shots due to for example radio outages can be reproduced as required.

The QC Engine is shipped with a default set of attribute algorithm plug-ins, but the QC Engine tests can be tailored to user specific needs by adding new plug-in QC modules that interact with the QC Engine.

The graphical layout is also flexible, and the user can add, remove, move, configure and link new QC displays as required, making the QC System an ideal companion in Integrated Operations (IO) for life of field seismic (LoFS).

 

ReM QC Features at a Glance

Source Vessel / Rig communication infrastructure

  • VSAT or radio system communication
  • Uses ION CSL MVRS hardware (if radios required) and software communication infrastructure.

Navigation Interface

  • Uses standard Shot Headers to interface to navigation system
  • Delivery of navigation shot headers to continuous recording system on rig
  • All navigation shot headers logged in ReM QC database to handle radio outages
  • Navigation and gun attributes logged to QC database

Seismic QC Engine on rig

  • Sensor node based attributes generated for each shot / seismic record
  • Exception based test criteria applied to attributes, results stored to QC DB
  • Can interface to 3rd party recording system

Multi survey 4C/4D QC database

  • Powerful PostgreSQL relational database on rig and source vessel
  • Multi 4D survey design
    • Survey Details - Bin Grids, Preplots, GRS Information
    • Sequence and shot point information, Sensor Positions
  • Seismic, Navigation and Gun Attributes

Full QC functionality available on source vessel

  • QC data automatically transferred to source vessel. (configurable)

Automated Data Integrity Module

  • QC’s recording system, ensuring a seismic record has been produced for each shot fired by navigation system. Existence of QC data for shot implies seismic record has been recorded by recording system. Radio outages may result in missing seismic records or QC data.
  • 3rd party recording system can be instructed to recreate a seismic record from raw data on disk

ReM QC Display Application

  • Powerful and flexible design, available at any location
  • View Live (Pause Play Controls) and Historical Data
  • 4D Survey to Survey Comparison
  • Display any attribute, measurement or test result stored in database
  • Approve, Reject Data, Load P1/90, control p1/90 merge and data transfer to shore

ReM QC Configuration Application

  • Attributes Definitions
  • Tests – Exception criteria and permitted # exceptions
  • Line rejection criteria , max consecutive bad shots per, % of bad shots per line
  • Configure which sensor Nodes to QC and when

Download brochure: OCTIO QC Systems