Optimisation of the oil or gas production process requires knowledge of the bottomhole producing pressure. Monitoring of the production process using surface measurements requires approximations to be made and from which inefficiencies in production can result.
Retrofit of CaTS into existing production wells provides a cost-effective solution to achieving high accuracy, long-term monitoring, leading to improved production efficiency and longer well life.
CaTS retrofit process
CaTS can be retrofitted into the well using standard slickline services. The gauge is typically suspended below a gauge hanger set in a nipple profile, or alternatively can be set below a bridge plug.
Where monitoring of several discrete zones in a given well is required, multiple CaTS gauges can be installed with the signals being multiplexed downhole, then decoded at surface by a multi-channel receiver.
Signal pick-up at surface is achieved simply by making an electrical connection to the wellhead. The signal is collected, decoded and stored in the topside receiver located at the wellsite. Where there is no electrical power supply available onsite, the topside receiver can be powered by solar panels.
Where real-time ‘data to desk’ is required by the client, the topside receiver can be interfaced to the client’s SCADA system or alternatively, a stand-alone GSM link can be put in place.
When the downhole battery packs are depleted, the gauge can be retrieved to surface, the packs replaced and the gauge re-run.
Benefits of real-time data
Where an operator may have to monitor production performance from a field of tens or even hundreds of wells on a daily basis, it simply isn’t practical to visit each wellsite every day. By retrofitting CaTS into a selection of key wells in different segments of the reservoir and setting up real-time CaTS data transmission to the office, it is possible to receive vital early warning signs of pending production problems. Using CaTS enables a proactive approach to be taken to minimise downtime and maximise production.
For further information on Expro’s wireless technology, please contact:wireless@exprogroup.com
Onshore Production Monitoring
Optimisation of the oil or gas production process requires knowledge of the bottomhole producing pressure. Monitoring of the production process using surface measurements requires approximations to be made and from which inefficiencies in production can result.
Retrofit of CaTS into existing production wells provides a cost-effective solution to achieving high accuracy, long-term monitoring, leading to improved production efficiency and longer well life.
CaTS retrofit process
CaTS can be retrofitted into the well using standard slickline services. The gauge is typically suspended below a gauge hanger set in a nipple profile, or alternatively can be set below a bridge plug.
Where monitoring of several discrete zones in a given well is required, multiple CaTS gauges can be installed with the signals being multiplexed downhole, then decoded at surface by a multi-channel receiver.
Signal pick-up at surface is achieved simply by making an electrical connection to the wellhead. The signal is collected, decoded and stored in the topside receiver located at the wellsite. Where there is no electrical power supply available onsite, the topside receiver can be powered by solar panels.
Where real-time ‘data to desk’ is required by the client, the topside receiver can be interfaced to the client’s SCADA system or alternatively, a stand-alone GSM link can be put in place.
When the downhole battery packs are depleted, the gauge can be retrieved to surface, the packs replaced and the gauge re-run.
Benefits of real-time data
Where an operator may have to monitor production performance from a field of tens or even hundreds of wells on a daily basis, it simply isn’t practical to visit each wellsite every day. By retrofitting CaTS into a selection of key wells in different segments of the reservoir and setting up real-time CaTS data transmission to the office, it is possible to receive vital early warning signs of pending production problems. Using CaTS enables a proactive approach to be taken to minimise downtime and maximise production.
For further information on Expro’s wireless technology, please contact: wireless@exprogroup.com