With the global hydrocarbon industry progressively moving towards a greater emphasis on gas production, the latest trend towards large bore completion designs makes traditional cabled reservoir monitoring technologies difficult, if not impossible, to apply effectively. CaTS offers a monitoring solution for high-rate gas wells that can allow the production to be optimised.
CaTS as a deep-set monitoring solution
The trend for completion designs in high productivity gas well developments typically includes the provision of a large bore production liner that may extend for several thousand feet above the reservoir. Use of a large bore liner prevents the placement of traditional cabled-type monitoring systems (permanent gauge systems) close to the producing sand face.
This means that a cabled monitoring system must be located several thousand feet away from the flowing sand face, which due to the gravity head difference and frictional pressure drop, introduces a significant uncertainty into the accuracy of the measurement and how it relates to the actual sand face flowing pressure.
Where wells are being produced on drawdown constraint, having an accurate measurement of the sand face flowing pressure enables the operator to optimise the well production and potentially, flow the wells harder
A large bore CaTS mandrel, suitable for deployment in 9 5/8″ casing has been developed. When conveyed as part of a lower completion assembly, this can be positioned in close proximity to the flowing sand face and then transmits the data through the casing to a pickup point located higher up in the well and somewhere above the production packer. The signal is then relayed to the seabed via a conventional 1/4″ encapsulated cable located in the annulus. At the seabed the signal is collected and processed in a CaTS subsea receiver, which is interfaced with the subsea electronics module of the tree provider to provide real-time data direct to the client’s network.
For further information on Expro’s wireless technology, please contact:wireless@exprogroup.com
Production Optimisation in High-Rate Gas Wells
With the global hydrocarbon industry progressively moving towards a greater emphasis on gas production, the latest trend towards large bore completion designs makes traditional cabled reservoir monitoring technologies difficult, if not impossible, to apply effectively. CaTS offers a monitoring solution for high-rate gas wells that can allow the production to be optimised.
CaTS as a deep-set monitoring solution
The trend for completion designs in high productivity gas well developments typically includes the provision of a large bore production liner that may extend for several thousand feet above the reservoir. Use of a large bore liner prevents the placement of traditional cabled-type monitoring systems (permanent gauge systems) close to the producing sand face.
This means that a cabled monitoring system must be located several thousand feet away from the flowing sand face, which due to the gravity head difference and frictional pressure drop, introduces a significant uncertainty into the accuracy of the measurement and how it relates to the actual sand face flowing pressure.
Where wells are being produced on drawdown constraint, having an accurate measurement of the sand face flowing pressure enables the operator to optimise the well production and potentially, flow the wells harder
For further information on Expro’s wireless technology, please contact: wireless@exprogroup.com