Well-SENSE launches miniature optical gauge

5/7/2019

HOUSTON -- Well-SENSE has launched a miniature optical pressure-temperature gauge, as part of its FiberLine Intervention (FLI) system, at the Offshore Technology Conference (OTC) in Houston.

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The Well-SENSE optical gauge.

The Well-SENSE optical gauge widens the well surveillance application envelope for FLI, both on and offshore, and offers operators a low-cost and disposable alternative to both permanent downhole sensors and more traditional electronic logging devices.

Combined with FLI’s other features and benefits, including a simple deployment mechanism and distributed sensing, it can deliver savings in the region of 50%-90% compared to conventional logging methods.

The fiber Bragg grating based device is a robust optical gauge with no electronics, batteries, external connections or power supply required. It is integrated into the fiber line and is ideally suited to well surveillance activities in harsh environments around the world, including HPHT applications. Set as standard, the new gauge has the capability to measure up to 10,000 psi and 150°C, with the option to enhance this further to 20,000 psi and 300°C.

The Aberdeen-headquartered company has developed its own exclusive technology in partnership with optical sensor company Fibos in Toronto, Canada. Believed to be one of the most compact Bragg grating based gauges on the market, at around only 10 mm³, it can be combined with other sensors and incorporated inside Well-SENSE’s smallest FLI probe. This means that it can be deployed in narrow access wells to log data during descent and capture bottom hole temperature and pressure over time. It is long-lasting and can be left in the well with the FLI system for days, or even months, and will stream real-time, live well data along the optical fiber back to surface.

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