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Optasense Holdings Limited patents

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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Optic fibres and fibre optic sensing

Fiber optic cables with improved performance for use in distributed sensing, for instance in distributed acoustic sensors, are disclosed. In one embodiment a fiber optic cable (210) comprises a core (208) and cladding (206) disposed within a buffer material (202) surrounded by a jacket (204) and arranged so that the... Optasense Holdings Limited

Monitoring a geological formation

This application relates to methods and apparatus for monitoring a geological formation that is or has been subjected to steam injection using a distributed fibre optic sensor apparatus to perform distributed fibre optic sensing on an optical fibre deployed in a borehole running through the geological formation to acquire a... Optasense Holdings Limited

Fibre optic cable with tuned transverse sensitivity

This application relates to a fibre optic cable structure suitable for use as a sensing fibre optic for distributed acoustic sensing and having an improved sensitivity to transverse pressure waves. The application describes a fibre optic cable (300) having a longitudinal cable axis and comprising at least one optical fibre... Optasense Holdings Limited

Fibre optic distributed sensing

The application describes methods and apparatus for distributed fibre sensing, especially distributed acoustic/strain sensing. The method involves launching interrogating radiation in to an optical fibre and sampling radiation backscattered from within said fibre at a rate so as to acquire a plurality of samples corresponding to each sensing portion of... Optasense Holdings Limited

Improvements in fibre optic distributed sensing

This application describes methods and apparatus for distributed fibre optic sensing that reduce or compensate for the effects of laser phase noise. The method involves repeatedly interrogating an optical fibre (101), where each interrogation involves launching at least one interrogating pulse into the optical fibre; detecting optical radiation which is... Optasense Holdings Limited

Fluid inflow

Methods and apparatus for determining fluid inflow to a well are described. In one example, a method comprise determining a first fluid flow velocity profile from slug tracking and determining a second fluid flow velocity profile from an estimate of fluid inflow at each of a plurality of perforations in... Optasense Holdings Limited

Fluid inflow

Methods and apparatus for obtaining an indication of fluid in-flow in a section of a gas well having multiple perforations through which fluids comprising gas and/or liquid enter the well are described. In an example, the temperature within the section of the gas well is monitored at a plurality of... Optasense Holdings Limited

Fibre optic distributed sensing

A method of distributed fibre optic sensing is described. In an example, a series of interrogations are launched into an optical fibre, each interrogation comprising interrogating radiation in at least one pulse pair, wherein the pulses of a pulse pair are introduced to the optical fibre with a time interval... Optasense Holdings Limited

Fibre optic distributed sensing for perimeter monitoring

This application relates to apparatus and methods for monitoring of a perimeter having a barrier (101) such as a chain-link fence. The system (100) has a sensing optical fibre (102) suitable for fibre optic distributed acoustic sensing (DAS) deployed along at least part of said perimeter, with at least part... 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