ROV SEISMIC SUPPORT SERVICES

The true value of Geo Oceans’ ROV Seismic System, when coupled with our Mini-ROV resources, is its unrivalled flexibility to support high-value and time-critical seismic campaigns without the need for a dedicated ROV support vessel. The addition of the Geo Oceans ROV Seismic Systems to Ocean Bottom Node (OBN) or Ocean Bottom Cable (OBC) seismic campaigns has provided significant cost, time and efficiency gains across a multitude of different sized campaigns globally.

The Geo Oceans ROV Seismic System is often deployed in remote locations and includes two or three redundant Mini-ROV systems in addition to full spares and repair kits to keep the OBN and OBC seismic campaigns on schedule. To optimise seismic surveys, the ROV Seismic System requires two ROV technicians per shift and can be operated 24 hours or from several work fronts if more than one vessel is available. The ability to scale resources for comparatively little logistical effort and low cost mitigates some risk to project schedules and resources can be scaled up or down throughout the campaigns.

The Geo Oceans ROV Seismic System can be setup on vessels of opportunity that are already deployed in the field so there is no need for an additional ROV support vessels for the following subsea tasks:

  • Retrieval of nodes, pingers and other infrastructure from the seafloor
  • Free entanglements
  • Environmental assessment when nodes are deployed around sensitive seafloor habitats
  • Acquisition of HD Video and positioning data to guide management and HSE decisions
  • Deployment and placement of nodes around infrastructure
  • Other ad hoc tasks that arise during the seismic survey

PROJECT EXAMPLES

2019 India Seismic Survey Campaign

Geo Oceans was engaged to provide ROV support for a long-term OBN seismic survey offshore of India. The scope included node and transponder positioning, recovery and movement using ROV systems deployed from vessels of opportunity.

2019 Shell Seismic Survey Campaign

Geo Oceans was awarded a long-term contract with BSP to provide ROV support and marine science services for an OBN seismic survey. Geo Oceans supplied all ROV and marine science equipment, software and personnel to provide support over an extended period on the largest seismic campaign in the region for many years. The scope included coral impact mitigation, node and transponder positioning, recovery and movement using ROV systems.

ROV OBN Seismic Survey Support Campaign

Geo Oceans completed an 85-day ROV campaign providing Mini-ROV support for a large OBN seismic survey offshore of Malaysia. Geo Oceans operated a small ROV team throughout the campaign supporting node recovery, OBC recovery, lifting line attachments and line disentanglements. Mini-ROVs were operated from existing non-DP seismic survey vessels and switched between vessels in the field, providing considerable flexibility and cost efficiency for the survey contractor and proponent.

Ocean Bottom Cable Seismic Survey – Malaysia

Geo Oceans was commissioned to complete a towed camera survey to capture high-resolution, geo-referenced video and still images of the seabed within a proposed OBC seismic survey area and pipeline route in Malaysia. A total of 15,000 still images and 148 videos were delivered to the client for their subsequent analysis and use in their environmental impact assessment.

Brunei Seismic Survey Campaign 2020

Geo Oceans delivered a long-term project to provide ROV support and marine science services for an OBN seismic survey. Geo Oceans supplied ROVs marine science equipment, software and personnel to provide over 209 continuous days of ROV operations. The team performed 1578 ROV dives from a 65m DP vessel, 588 ROV interventions, recovered 1306 nodes and recorded only 3 days of technical downtime throughout the entire campaign.

Coral Survey and Seismic Exploration Support

Geo Oceans was engaged to complete a coral survey and provide ROV support for seismic survey operations for an oil and gas field. Coral condition in the field was assessed during and post seismic investigations. The ROV was also deployed from the seismic vessels to provide clearance surveys, touchdown monitoring, node recovery and line disentanglement. General visual inspections of the node and line layout were performed near platforms.

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