PMSS™ Portable Modular Source System™ 1 Overview


Success Comes From Being Adaptable

Modular Source Overview

  • Array Handling Frame complete with Airgun Array
  • Containerised Compressor
  • Containerised Umbilical Module
  • Containerised Workshop

Modular Source Applications

  • Reservoir Monitoring / 4D Survey
  • Wide / Multi Azimuth Survey
  • Undershoot Operations
The PMSS™ consists of a suite of standard ISO containers that have been fitted with equipment and service modules that, together, form a fully portable seismic source system.

The system can, typically, be deployed in a 23 x 11 meter footprint and can be fitted to any vessel with enough deck area. The configuration of the standard ISO containers is flexible and can be altered to suite specific vessel deck arrangements and vessel dimensions.

The portable source system only requires electrical power and cooling water from the vessel. All other supply and services are self-contained within the standard ISO containerised units.

The three gun string source is deployed over the stern of the vessel and towed approximately 50 meters astern. This arrangement allows for rapid deployment and recovery coupled with very short turning times. This ensures efficient survey operations.

The source system is compact, very safe to recover/deploy and thus is able to acquire data at relatively high speed. The safe handling and inherent robust design allows operations to continue in weather conditions that would stop most other survey operations.

General Operational Parameters:

Array Volume: 2900 cu in (47.5 litres)
Pressure:  2000psi (140 bar)
No. of Guns:  26
No. of Strings:  3
Shot Intervals:  25 m
Shooting Speed:  6 knots
Turning Time (180°):  20 minutes
Maximum Days Production:  8000 sp (200 linear kms)
Typical Days Production 400 sp (100 linear kms)

Gun Handling Frame
2,900in3 (3 string) Bolt APG Array, Baro flotation
system, integrated rGPS pods (1 per string)
Containerised Umbilical Unit
3 winches each holding 150m Air Gun Umbilicals
and air distribution panels
Containerised Compressor
1800cfm compressor
Containerised Instrument Room
Containing operating workstation for the
Integrated Navigation System and RTS –
‘BigShot’ source synchronisation system
Containerised Workshop
Operational workshop for the maintenance of
the source system
Containerised Stores and Utilities Unit
Storage for equipment to maintain the source
system and switch panels for power distribution
to all other container units