Electrical Subsea & Drilling as

Egil Eriksen

An apparatus for connecting a ram-actuator to a BOP ram body. The apparatus includes a BOP ram body end portion with locking recesses, a ram-actuator end portion with protruding connection elements which are arranged to fit into the locking recesses, and locking wedges. The locking recesses have first grooves. The protruding connecting elements each have second grooves. The first groves and the second grooves form pairs. Each pair is arranged to form an opening for an insertion of one of the locking wedges when the protruding connection elements are in engagement with the locking recesses in the BOP ram body.

Device for connection or release of bop ram actuator

An actuator device includes a housing, parallel rolling screws supported in the housing, an actuator element, an actuator spindle anchored in the actuator element, a control system, sensor heads, and position sensors. Each rolling screw is coupled to an electric motor and engages a roller nut. Rotating the rolling screws axially displaces the rolling nuts. The actuator element engages with each rolling nut. One sensor head is arranged on the actuator element near each roller nut. One position sensor is fastened in the actuator adjacent each sensor head and communicates position information of each sensor head to the control system. Each electric motor has an encoder coupled to the control system. The encoder provides a primary motor control. The control system compares information from each position sensor with information from the encoder. The information from each position sensor acts as a secondary position control of the actuator element.

Actuator device

A packer arrangement for a sealed passage of a drillstring therethrough. The drillstring has geometric differences between passing drill pipes and joint couplings. The packer arrangement includes a packer holder which forms a housing with an axially through-going center passage which has a flexible packer sleeve arranged in a portion thereof, an external annulus which encloses the packer holder, an internal annulus, and two actuators which apply an axial tensile force to the flexible packer sleeve. The flexible packer sleeve has a center portion and two end terminations which are axially displaceable in the packer holder. The internal annulus is delimited by the center portion of the flexible packer sleeve and by the packer holder. The internal annulus is in a fluid communication with the external annulus. Each of the two end terminations is coupled to one of the two actuators, respectively.

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Al, Norway

Egil Eriksen