小、精、简 GeoTag“说出”海底定位

Sercel announced today the launch of GeoTag, the acoustic positioning solution of choice for seabed seismic acquisition. GeoTag can be used to accurately position all types of Ocean Bottom Cable (OBC), Ocean Bottom Node and Transition Zone cable systems for seabed seismic surveys in water depths down to 500 meters.

The highly flexible and reliable GeoTag solution operates with the smallest acoustic positioning transponder available on the market. The transponders are attached to the seabed seismic equipment and interrogated by a vessel-based trans-ceiver. GeoTag’s unique design allows for rapid maintenance such as battery replacement for improved crew efficiency. The transponders can also be stored on a reel and deployed mechanically when used with OBC systems, for seamless and cost-effective operations.

With the addition of GeoTag’s acoustic positioning capability, Sercel now offers a complete, state-of-the-art acquisition solu?tion for a wide range of seabed seismic surveys. GeoTag is fully scalable for use on small to large seabed crews deploying up to 10,000 acoustic positioning devices.

Pascal Rouiller, Sercel CEO, said: “This new product capitalizes on our proven experience in acoustic positioning. It answers the need in the industry for more accurate positioning of seabed seismic equipment, particularly for 4D operations.”

GeoTag is the new acoustic positioning system from Sercel designed to work with any ocean bottom or transition zone seismic equipment down to 500 meters deep. GeoTag is the smallest acoustic transponder on the market, allowing flexible and cost effective operations due to its ability to be stored on a reel and deployed by mechanical squirter.

GeoTag benefits from Sercel’s expertise in advanced acoustic technologies to provide a reliable state of the art turnkey solution for your acoustic positioning needs.

Features & Benefits

• FLEXIBLE OPERATIONS
   —Smallest transponder on the market
• Simplified battery replacement
   —RELIABLE PERFORMANCE
• Sercel proven acoustic technology
• Accurate positioning : 0.2 m typical
• WIDE RANGE OF SURVEYS
• OBC, TZ, and ocean bottom nodes
• Shallow and deep surveys : Down to 500 m
• Scalable from small to large crews (1 to 10,000 units)

Equipment

GeoTag

The small and lightweight GeoTag is an acoustic transponder enabling accurate positioning measurement of seismic receivers on the seabed by measuring ranges from the surface transceiver. Its specific design allows easy installation on any seismic cable or node.

• Operational down to 500 m;
• Long battery life (6 month operation);
• Programming and testing by acoustic;
• Up to 10,000 unique IDs.

Transceiver

The GeoTag transceiver on the vessel interrogates the GeoTag transponders located on the seafloor. The Geotag transceiver is connected to the navigation system through a junction box.

• Up to 10 simultaneous replies;
• Connection to navigation system.

PTE

The GeoTag Programming and Test Equipment is an autonomous device powered by a Li-Ion battery. It is used to program the addresses of the transponders before deployment.

It can also be used to run quick QC tests for maintenance purposes. The connection to the transponder is via acoustic and the results can be downloaded to a PC for subsequent checks and maintenance tracking.