Abstract:
The present invention relates to a subsea sensor hub (14) for a coupling sensor element (11) to an electrical unit (12). The subsea sensor hub (14) comprises a first end (17) for receiving a sensor element (11), a second end (18) for receiving the electrical unit (12), and at least one through hole (21) extending from the first end (17) to the second end (18). Furthermore, at least one electrical connecting element (22) is arrangable to extend through the at least one through hole (21).
Abstract:
A subsea umbilical termination assembly comprising: an umbilical termination head 2 fixed to the end of a subsea umbilical 3; and an electrical and/or optical distribution unit 4 comprising a base frame 5 and several connectors 6 mounted to the base frame 5, wherein each connector 6 is electrically connected to an electrical cable of the subsea umbilical 3 via the umbilical termination head 2 or optically connected to an optical cable of the subsea umbilical 3 via the umbilical termination head 2. The umbilical termination head 2 is mounted in a space 7 provided inside the base frame 5 of the distribution unit 4.
Abstract:
The present invention relates to a method for predicting formation of hydrates in a wellbore or riser annulus, given that gas is present, where the method comprises the following steps: - logging of actual mud properties, - continuously measuring and/or calculating actual sets of pressure data and temperature data at given locations/intervals in the wellbore or riser annulus, - determining a theoretical temperature profile for formation of hydrates T Hyd , dependent on mud properties and pressure as a function of true vertical depth (TVD) in the well, and storing said temperature profile for formation of hydrates T Hyd in a control system, - utilizing said measured and/or calculated actual set of temperature data and comparing with the temperature profile for formation of hydrates T Hyd , - a signal being given from the control system if said measured and/or calculated actual set of temperature data (153) is getting below or lower than a predefined safety margin for the temperature profile for formation of hydrates T Hyd (154). The present invention also relates to a control system for predicting formation of hydrates in a well as a function of true vertical depth, wherein the control system comprises means for measuring or calculating actual sets of pressure data and temperature data based on received logged and continuously measured data for actual mud properties and pressure and temperature in the well, and means for comparing the actual set of temperature data with a theoretical temperature profile for formation of hydrates T Hyd , and a signal generator generating a signal to an operator if said actual set of temperature data is getting below or lower than a predetermined safety margin for the temperature profile for formation of hydrates T Hyd (154).
Abstract:
A fluid (30) of optically clear composition is used to create a viewing window within a wellbore (1), pipelines, tanks, vessels, or any other similar environment. Selective placement of optically clear fluid facilitates acquisition of visual images and/or other data in particular areas of interest within environments containing opaque or non-transparent fluids. Such optically clear fluid can displace opaque fluids and gases, while maintaining specific viscosity, weight, and other fluid properties in order to keep opaque fluids from encroaching into a viewing area while visual data acquisition is performed.
Abstract:
L'invention se rapporte à un procédé de détection d'eau dans une bouée de tensionnement d'une colonne montante d'une installation en milieu aquatique, ledit procédé étant caractérisé en ce qu'il comprend des étapes successives de: -définition d'un écho étalon représentatif (EE 11 ), -émission dudit signal ultrasonore sur une paroi de ladite bouée, -mesure d'un écho réponse représentatif (ER 11 ) provoqué par le rebond dudit signal ultrasonore au sein de ladite bouée, -comparaison dudit écho réponse représentatif audit écho étalonreprésentatif, -détermination de la présence ou l'absence d'eau dans la bouée en fonction de ladite comparaison.
Abstract:
A system to detect a position of a pipe 214 with respect to a BOP 116 includes a casing 202 disposed around an outer surface of a section of the pipe 214. The system further includes sensing devices 204 that are disposed on the casing 202 and arranged to form a plurality of arrays 220,224 and configured to generate position signals. The arrays are disposed circumferentially around the casing 202 and spaced from one another along the length of the casing. The system includes a processing unit 206 configured to compute distance between the pipe 214 and each sensing device 204. The processing unit 206 generates a first alert when the distance between the pipe 214 and at least one sensing device 204 is different from a reference distance. The processing unit generates a second alert when the distance between the pipe 214 and each sensing device 204 of at least one array of sensing devices is different from the reference distance.
Abstract:
A method and system for detecting the presence of a blockage within a subsea pipe segment includes a submersible and remotely-operated vehicle having a laser emitting element and a hydrophone. The vehicle is positioned proximal to a subsea pipe segment of interest, and the laser emitting element is activated to irradiate a laser target on an exterior portion of the pipe segment. The laser light is converted to heat energy, and heat is conducted from the laser target across the pipe wall to a portion of the bore of the pipe segment. Acoustic signals are produced as a result, of one of the disassociation of gas from a portion of the solid deposit proximal to the laser target, stress cracks induced in the solid deposit and physical changes of state and physical displacement occurring within the blockage. The acoustic signals are detected by the hydrophone on the vehicle.
Abstract:
Adapters for inclusion on the lower end of a completion/work-over riser includes a flow loop in fluid communication with a production flow loop hub and a production bore to facilitate testing and calibration of a subsea multi-phase flow meter during completion operations. The flow loop can be in fluid communication with one or more flow loop isolation valves, one or more production bore isolation valves, one or more annulus bore isolation valves, or one or more cross-over valves. In addition, a pressure/temperature sensor can also be included in the adapter. The adapters disclosed herein permit production fluid to flow through the subsea multi-phase flow meter while the riser is still attached to the subsea Christmas tree and before production operations have begun.