Abstract: A tool for recovering a casing hanger from a wellhead, the tool comprising a tool body having a longitudinal axis, a pressure operated locking assembly, a pressure operated latch assembly which are configured to move in response to the supply of fluid to the tool, a retainer which is configured to prevent movement of either the locking assembly or the latch assembly until the pressure of the fluid supplied to the tool reaches a pre-determined level The tool may include a cutting apparatus which is configured to be inserted into a main passage of a tubular having a longitudinal axis and which is operable to cut through the tubular in a plane generally perpendicular to the longitudinal axis thereof.

Abstract: This invention relates to a subsea actuator with visual position indicators and associated methods for subsea energy infrastructure, such as in the oil and gas industry. The actuator may include a housing with a window, an actuation member, and a drive mechanism that moves the actuation member between at least two positions. The invention also relates to a method that involves providing a housing with a window, connecting the actuation member to a drive mechanism, and indicating the position of the actuation member through the window. This visual inspection can be performed directly or via a camera, even in the event of a power failure, using a passive, unpowered indicator. The indication can be displayed on an ROV panel, ensuring reliable remote monitoring and operation of the subsea actuator.

Abstract: A wellhead retrieval tool comprising a body having a first portion and a second portion, the first portion carrying a release actuator assembly which is adapted to engage with a wellhead release mechanism of a housing and which is operable to actuate the wellhead release mechanism to release a wellhead from the housing, the second portion carrying a locking mechanism, which is operable to engage with a wellhead to lock the wellhead to the wellhead retrieval tool.

Abstract: This invention relates to a subsea actuator with visual position indicators and associated methods for subsea energy infrastructure, such as in the oil and gas industry. The actuator may include a housing with a window, an actuation member, and a drive mechanism that moves the actuation member between at least two positions. The invention also relates to a method of that involves providing a housing with a window, connecting the actuation member to a drive mechanism, and indicating the position of the actuation member through the window. This visual inspection can be performed directly or via a camera, even in the event of a power failure, using a passive, unpowered indicator. The indication can be displayed on an ROV panel, ensuring reliable remote monitoring and operation of the subsea actuator.