Expro Excellence
Wireless Well Solutions
2.25” CaTS™ gauges provide long-term wireless reservoir monitoring
Objectives
  • An operator required continual monitoring of gas storage wells
  • The wells did not have any form of permanent gauge systems installed and whilst memory gauges were considered, these only provide data historically thus real-time reservoir optimisation would not be possible
  • A retrofittable wireless gauge system that delivers continuous, long-term, real-time reservoir monitoring was considered very attractive in allowing these reservoirs to be managed effectively
Expro Excellence
  • 10 x 2.25" Expro CaTS™ wireless gauges were retrofitted into a number of wells on slickline and hung off in standard nipple profiles
  • Reservoir pressures and temperatures are now measured using a precision, high resolution, quartz pressure sensor and the data then transmitted to the surface wirelessly using the steel of the well completion as a conduit for the CaTS signal to pass along
  • At the surface, the CaTS receiver collects, decodes and stores the data to local memory
  • Surface receivers are powered by batteries and are charged by solar power, ensuring data will not be lost with continuous power supplies, and also removed the need for a mains power supply at the well site
  • The gauges were installed in 2007, and the system is still providing reliable data through scheduled battery change outs
  • Multiple gauges have been installed at different depths in the same well, demonstrating the addressable function of the gauges
  • Various wells have been connected to a single topside receiver, demonstrating the addressable function of the receivers
  • The gauges have been recovered and deployed using conventional slickline methods, allowing the client to monitor the reservoir and zones of importance across an extended time period
  • The use of the same CaTS gauges in multiple wells demontrates the durability of the equipment
Value to client
  • Compliance wtih local regulations stating the pressure in all gas storage facilities must be monitored
  • Cost savings compared to frequent memory gauge survey runs
  • More than nine years of pressure and temperature monitoring across multiple zones in nine gas storage wells
  • Flexibility to retrieve and deploy the gauges according to the monitoring need for reservoir optimisation
  • Simple interface with the surface receivers allow the client to download the data when required
  • Uninterupted power supply at receivers mean routine maintenance to mains power can be completed without affecting the gauge data
Contact

2.25” CaTS™ gauges provide long-term wireless reservoir monitoring

In Brief
Measuring seasonal demand for gas storage: 2.25" CaTS™ gauges provide long-term wireless reservoir monitoring for onshore gas storage optimisation in South West France
Product Line
Wireless Well Solutions
Region
Europe CIS
Objectives
  • An operator required continual monitoring of gas storage wells
  • The wells did not have any form of permanent gauge systems installed and whilst memory gauges were considered, these only provide data historically thus real-time reservoir optimisation would not be possible
  • A retrofittable wireless gauge system that delivers continuous, long-term, real-time reservoir monitoring was considered very attractive in allowing these reservoirs to be managed effectively
Expro Excellence
  • 10 x 2.25" Expro CaTS™ wireless gauges were retrofitted into a number of wells on slickline and hung off in standard nipple profiles
  • Reservoir pressures and temperatures are now measured using a precision, high resolution, quartz pressure sensor and the data then transmitted to the surface wirelessly using the steel of the well completion as a conduit for the CaTS signal to pass along
  • At the surface, the CaTS receiver collects, decodes and stores the data to local memory
  • Surface receivers are powered by batteries and are charged by solar power, ensuring data will not be lost with continuous power supplies, and also removed the need for a mains power supply at the well site
  • The gauges were installed in 2007, and the system is still providing reliable data through scheduled battery change outs
  • Multiple gauges have been installed at different depths in the same well, demonstrating the addressable function of the gauges
  • Various wells have been connected to a single topside receiver, demonstrating the addressable function of the receivers
  • The gauges have been recovered and deployed using conventional slickline methods, allowing the client to monitor the reservoir and zones of importance across an extended time period
  • The use of the same CaTS gauges in multiple wells demontrates the durability of the equipment
Value to client
  • Compliance wtih local regulations stating the pressure in all gas storage facilities must be monitored
  • Cost savings compared to frequent memory gauge survey runs
  • More than nine years of pressure and temperature monitoring across multiple zones in nine gas storage wells
  • Flexibility to retrieve and deploy the gauges according to the monitoring need for reservoir optimisation
  • Simple interface with the surface receivers allow the client to download the data when required
  • Uninterupted power supply at receivers mean routine maintenance to mains power can be completed without affecting the gauge data
Contact

For further information, please contact:

tom.edgar@exprogroup.com