Abrégé

A system is for monitoring subsea parameters and is deployable in a water column. The system has: a tether to be moored to a seabed; a variable buoyancy member; one or more sensor units for sensing one or more subsea parameters; and a control unit. The control unit has a communication member for receiving data from the sensor unit(s) and for transmitting the data wirelessly to a remote recipient. The variable buoyancy member is adapted to move the communication member between a submerged position and a surface position for the wireless transmittal of data. The control unit is adapted to control the buoyancy of the variable buoyancy member. A non-variable buoyancy member is connected at an upper portion of the tether. The submerged position of the communication member is below the position of the non-variable buoyancy member. A method is for monitoring subsea parameters.

Classes IPC  ?

• B63B 22/18 - Coffres d'amarrage ou bouées comportant des moyens pour régler l'assiette ou la position, p. ex. des surfaces de réaction ou des orins
• B63B 22/06 - Dispositifs d'ancrage avec des moyens pour rappeler la bouée à la surface en réponse à un signal émis

Abrégé

There is disclosed a system for monitoring subsea parameters, the system being deploy-able in a water column and comprising: - a tether with a first end portion to be moored to a seabed; - one or more sensor units for sensing one or more subsea parameters; and - a control unit, the control unit including a communication member for receiving data from the sensor unit(s) and for transmitting said data wirelessly to a remote recipient, the communication member being provided at or near a second end portion of the tether, wherein the system further comprises a variable buoyancy member connected to the tether, the variable buoyancy member being adapted to move the communication member between a position below the surface of the water column and a surface position for the wireless transmittal of data, and wherein the control unit is adapted to control the buoyancy of the variable buoyancy member. There is also disclosed a method for monitoring subsea parameters.

Classes IPC  ?

• E21B 41/00 - Matériel ou accessoires non couverts par les groupes
• E21B 47/14 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques
• B63B 22/06 - Dispositifs d'ancrage avec des moyens pour rappeler la bouée à la surface en réponse à un signal émis