Smart Fibres have developed a range of low-cost, downhole optical P/T gauges for permanent reservoir monitoring. Many tens of these gauges can be deployed in a well from a single main cable. In order to make such a multi-drop P/T deployment viable, an inter-sensor connection system is required which itself is low-cost, requires minimal rig time to deploy, and provides a long-term reliable protection of the optical connections from the extreme wellhole environment. The SmartLink system satisfies these requirements.
Two SmartLink systems are available – using fusion splices or (in the case of low temperature applications) miniature connectors. The spliced SmartLink system allows a string of P/T gauges to be pre-assembled either in the factory or in a workshop container at the field. Then this string can be rapidly run in hole over a cable sheave, so minimising rig time.
The connectorised SmartLink system offers increased flexibility to accommodate changes in deployment configurations. It employs miniature optical connectors that can be safely and quickly mated on the rig floor.