Franatech METS

• Ideal for moorings, AUVs, sniffers and underwater dissolved CH₄ monitoring
• Pre-calibrated and ready to install

The METS methane sensor offers real performances at affordable costs. It has been field-proven for many years and has established itself worldwide as a valued tool for many applications. It offers a comprehensive range of versions and calibration settings to meet different requirements. There are no internal moving parts or pumps, hence lower failure risk and lower power drain.

The METS Methane Sensor measures CH₄ and temperature simultaneously. The METS has been deployed extensively in oil and gas underwater exploration and monitoring. The METS has also been used to detect CH₄ seepage across numerous scientific studies. The METS can either be attached to AUV's or sniffers, or it can be used for long term studies on fixed moorings.

The METS can also be used in laboratory experiments, supported by either a data logger or connected to a computer through an RS-232 cable. It has its own dedicated software for real-time data observations and collection.

Our range of data loggers with remote download options supports the METS Methane Sensor. We can also connect the sensor to your logging platform. Contact us for more details.

 

case study: gas monitoring and leak detection in an underwater application for offshore oil and gas

• “Selection And Use Of Subsea Leak Detection Systems” Det Norske Veritas Recommended Practice, DNV-RPF302 (April 2010)

• It is not anticipated that a single technology/principle would be able to detect all of the possible leaks in all possible environments

• Combining two or more types of sensors may provide more confidence in the overall leakage detection system

• Complementary sensor technologies should be selected to compensate for the respective weaknesses and enable the indication of a leak event from one sensor type to be confirmed by positive indications from the other sensor type

• Point sensors may be installed over critical leak points

 

advantages of point gas sensors

• Data aggregation from different technologies is necessary to reduce uncertainty in particular rate and risk of false alarms

• Gas sensors can also be used for oil detection, as crude live oil has a high content in dissolved gas

• Gas plumes spread out much faster than oil, and can therefore be used as an early indicator

• Gas sensors can be positioned according to prior leak propagation simulation based on model e.g. “DeepBlow – a Lagrangian Plume Model for Deep Water Blowouts” Spill Science & Technology Bulletin, 6(2), April 2000, pp103-111, Øistein Johansen, SINTEF , Trondheim, Norway

 

application

A total of 11 Franatech METS Methane Sensors have been deployed as part of an under water leakage detection network in the North-Sea for a long-term monitoring purpose. The concept design and development of the under water leakage system is lead by the Norwegian Geotechnical Institute and Company Stinger Technology AS. The network is installed around a platform operated by a major international oil company. The picture above shows some of the network nodes (without seabed frames) prior to offshore installation.