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Optasense Holdings Limited patents (2016 archive)

Recent patent applications related to Optasense Holdings Limited. Optasense Holdings Limited is listed as an Agent/Assignee. Note: Optasense Holdings Limited may have other listings under different names/spellings. We're not affiliated with Optasense Holdings Limited, we're just tracking patents.

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Downhole surveillance

Method and apparatus for surveying the downhole environment in a steam stimulated well such as a steam assisted gravity draining well are described. One method comprises interrogating an optic fibre (104) arranged along the path of a well shaft (202, 204) within a steam stimulated well with optical radiation. ... Optasense Holdings Limited

Downhole surveillance

Methods and apparatus for surveillance of a downhole environment: the response of least one optical fibre to an acoustic impulse is sampled and processed to provide an indication of the acoustic signals detected by at least one longitudinal sensing portion of the fibre(s). The data comprises data indicative of at least one characteristic of the acoustic impulse and data indicative of the downhole environment. ... Optasense Holdings Limited

Fracture characterisation

This application relates to methods and apparatus for monitoring hydraulic fracturing in well formation and fracture characterization using distributed acoustic sensing (das). The method involves interrogating an optic fiber arranged down the path of a borehole to provide a distributed acoustic sensor and also monitoring flow properties of fracturing liquid pumped into the well where the acoustic data from the distributed acoustic sensor is processed together with the flow properties data to provide an indication of at least one fracture characteristic.. ... Optasense Holdings Limited

Monitoring of steam injection

Methods and apparatus for monitoring steam injection in a steam assisted well are disclosed. The method involves obtaining a first temperature profile of a well by performing distributed temperature sensing on a first fibre optic. ... Optasense Holdings Limited

Improvements in fibre optic distributed sensing

This application describes method and apparatus for fibre optic distributed acoustic sensing (das) that allow for quantitative estimation of relatively large and continuous stimuli acting on the sensing fibre. An optical fibre (101) is interrogated with optical pulse and the rayleigh backscatter detected to provide a das sensor. ... Optasense Holdings Limited

Traffic monitoring

The present application relates to road traffic monitoring to detect the number, speed and/or type of vehicles travelling on a road. Noise features (104) are deployed on, or formed in, the surface of a road (101). ... Optasense Holdings Limited

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This listing is an abstract for educational and research purposes is only meant as a recent sample of applications filed, not a comprehensive history. is not affiliated or associated with Optasense Holdings Limited in any way and there may be associated servicemarks. This data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Optasense Holdings Limited with additional patents listed. Browse our Agent directory for other possible listings. Page by