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Expro North Sea Limited patents


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

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "E" | Expro North Sea Limited-related inventors


Perforating gun for oil and gas wells

A perforating gun, perforating gun system, and method for producing the same is provided. The perforating gun includes a body and at least one cavity liner. ... Expro North Sea Limited

Measurement system and methods

Measurement system and methods with landing string systems are provided. Some examples describe a system having a measurement device with mechanical sensors, which can be used to observe mechanical conditions associated with a landing string. ... Expro North Sea Limited

Ball valve

A ball valve is provided. The ball valve includes a housing, a ball seat arranged in the housing, a ball member mounted within the housing and being rotatable relative to the ball seat between open and closed positions, the ball seat and ball member defining respective through bores, the ball member including a sealing surface, a bore surface and a leading edge surface extending between the sealing surface and the bore surface, the leading edge surface being configured to cut a body extending at least partially through the valve upon closure of the ball member, wherein said leading edge surface is truncated. ... Expro North Sea Limited

Monitoring systems and methods

There are described methods and apparatus for determining the condition of a barrier in a well infrastructure, for example. In some examples, sensor data that has been derived from a sensor arrangement at a barrier positioned at a location in a well infrastructure in received. ... Expro North Sea Limited

Landing string retainer system

A retainer system, device and method are provided for retaining a severed pipe string such as a landing string suspended from a rig of a floating vessel or platform during a failure of a primary or secondary heave compensation system and prevent the severed pipe string from flying over the rig floor. The retainer system includes a retainer device including a housing mounted to a platform or vessel, the housing defining a through bore for receiving a pipe string suspended from the platform or vessel. ... Expro North Sea Limited

Landing string

A landing string includes a valve having a valve member mounted within a flow path extending through the landing string, and a valve control system for use in operating the valve to move the valve member between open and closed positions to control flow along the flow path. The valve control system is reconfigurable between a first configuration in which the valve is operated or controlled under a fail-as-is (fai) mode of operation, and a second configuration in which the valve is operated or controlled under a fail-close (fc) mode of operation.. ... Expro North Sea Limited








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