ReM Recording System

The ReM Recording System is a continuous disk-based recording system and is a powerful tool as a part of an e-field solution for any life of field seismic installation. As multiplexed seismic data is acquired from the seismic sensors available, such as the VectorSeis sensor or hydrophones, it is recorded directly to disk.

De-multiplexed seismic records are further created as required, either while in a passive monitoring mode of operation, or in initiated through navigation messages from a source vessel. Due to the continuous recording nature of this recording system, the system is immune to radio outages to the shooting vessel, and will synchronize the navigation shot header messages and other required data to create the seismic records as soon as the radio link is operative again.

As de-multiplexed seismic records are formed on disk the Recording System triggers the ReM QC Engine. Once QC’d the Recording System creates and archives the data record in the client’s final format and to the desired location. This can be to local disk or to shore over available network infrastructure.

In addition to the seismic recording facilities, the intuitive graphical displays also provide the operator with the command and monitoring interface to the subsea control and acquisition systems. Through various tailored displays the operator can do such tasks as to manage the power to the system, manage resources, perform hardware diagnostics, manage and update firmware and software, view hardware status, and view and filter events.

 

ReM Recording System at a Glance

Intuitive graphical displays for e-field seismic installations.

Based on existing and proven recording engine

  • The ReM Recording System is based on the existing SRS recording engine developed by Concept Systems.

Continuous recording

  • The SRS recording engine is a continuous recording system and does not rely on external triggers to record seismic data.

Remote Control

  • Full command and control of ReM software via Source Vessel or other remote location
  • Navigation System Interface

Creation of de-multiplexed seismic records is divorced from the continuous recording of the multiplexed seismic data.

  • The timing of the archive can be configured to be automatic as soon as produced or after the QC system has flagged the data as QC’d and acceptable to be archived.
  • Once the archived file(s) have been written and verified the seismic records within the SRS system are flagged as archived and verified. They can then be deleted by the Application Layer

Creation of final file format and transfer to shore

  • As de-multiplexed seismic records are formed on disk the Recording System triggers the ReM QC Engine. Once QC’d the Recording System creates and archives the data record in the client’s final format (e.g SEG-Y) and to the desired location. This can be to local disk or to shore over the rig network.

SRS Design Concepts

  • SRS is a Common Disk Based Recording Engine.
  • SRS has a distributed design made up of multiple processes each with its own responsibility.
  • All SRS Processes communicate with each other via the Concept Systems messaging system. All processes are capable of producing health and status messages at regular intervals, event messages for publishing and notifying the occurrence of significant real world events.
  • GUI Applications are kept separate and uses the SRS API to interact with the recording system.
  • The SRS is very flexible and provides a low level and powerful API which the Application Layer can use to provide the necessary functionality to the operator and client.
  • A single intelligent control process coordinates power management and the monitoring of the subsea and acquisition systems through dedicated interface modules
  • The acquisition of seismic data is returned through a separate recorder process independent of the control process.
  • The recording of raw multiplexed seismic data is a separate task from that of creating the seismic records.

Common API for all application layer processes.

  • The SRS API is the interface to the SRS Engine. The API provides a comprehensive set of functionality to the application layer processes:
    • Power Management
    • Sensor Array Configuration
    • Recording Control
    • Record Production
    • Data Access
    • Event Access

Triggering based on passive (fixed interval), external (shot headers) or historical (missed shot) triggers.

  • The system may operate in both passive mode, e.g. for micro seismic surveys, or based on synchronization via navigation shot headers.

System operation policy to minimise the operational impact on system lifetime and safety Interface plug-ins for subsea control and acquisition

  • The recording system may be interfaced with any subsea control and acquisition system via tailored interface plug-ins (GUI adaption may be required).

Built in event and alarm logging

Download brochure: OCTIO Recording System