A major operator in Cyprus aimed to reduce reservoir uncertainties by instrumenting an abandoned subsea well with a wireless monitoring system, transforming it into a high-value subsurface data monitoring asset. This initiative was designed to capture future interference testing data from subsequent appraisal wells, scheduled for drilling in 12 months’ time
The wireless monitoring system was intended to:
Provide Long-Term Monitoring: Enable continuous monitoring for more than 5 years, covering any drilling or well testing activities that may occur within the location
Record Tidal Data: Measure and record location-specific tidal data, ensuring the subsurface team has comprehensive reservoir and tidal data sets for incorporation into reservoir models
Support Strategic Decision-Making: Deliver accurate reservoir and tidal data to support and de-risk strategic, high-value decision-making associated with the field development plan
Expro Excellence
Expro installed a dual downhole system In order to measure the wellbore pressure gradient to monitor the swap-out of completion fluids with the reservoir fluids and establish the reservoir fluid gradient
The gauges for the well were pre-programmed with data transmission to give 5 years of monitoring
Shallow and deep-set cement plugs were set to provide the necessary barriers in the well
A CaTS subsea receiver was mounted on the side of the well debris cap to provide easy access to data via a PSV
Value to Client
Enhanced Monitoring: Utilized an abandoned subsea well as a data monitoring asset for optimal well integrity and performance. Providing 5+ years of accurate data for the client
Removed Reservoir Uncertainties: Enhanced ability to reduce reservoir uncertainties through advanced monitoring and data collection
Interference Testing Data: Collected valuable data during interference testing from an appraisal well
Long-Term Monitoring: Provide long-term monitoring data for better planning and analysis
Comprehensive Data Sets: Provided Access to comprehensive tidal and reservoir data sets for improved reservoir modeling
Support Strategic Decisions: Support and de-risked strategic and high-value decision-making associated with the field development plan
Efficient Installation: Achieve efficient installation of downhole and subsea equipment with single-run operations and ROV assistance
Real-Time Data: Enabled real- time data transmission, decoding and storing transmissions from gauges
Customer Readiness: Prepare data for immediate upload at the customer’s request, ensuring timely access to critical information