Geosciences

Shearwater conducting OBN survey for ONGC offshore India

Feb. 6, 2024

ONGC has commissioned Shearwater GeoServices Holding to acquire a six-month ocean-bottom node (OBN) survey using Pearl nodes offshore India.

Pearl uses micro-electromechanical systems, and it features a compact size, long battery life and entirely wireless systems.

Offshore staff

BERGEN, Norway — ONGC has commissioned Shearwater GeoServices Holding to acquire a six-month ocean-bottom node (OBN) survey offshore India.

The company will deploy its Pearl node technology onboard the SW Tasman, a vessel designed for advanced seismic source and dual-ROV operations.

Pearl employs micro-electromechanical systems to detect low frequencies generated by source technology such as the company’s Harmony low-frequency source.

The system, Shearwater claims, provides larger and denser spreads, longer listening times and better signals, with up to 150 nodes for each trip compared to an industry standard of 20-30.