Abstract: A system for controlling a remotely controlled equipment. The system includes an operator station with a main operating device which is operated by an operator to provide a main operating device signal, an operator station controller, and a confirmation operating device which is operated by the operator to provide a confirmation operating device signal. An equipment controller is connected to the operator station controller. A first gate is connected to the equipment controller. The first gate enables an operation of the remotely controlled equipment. A critical action controller receives the confirmation operating device signal. A second gate is connected to the critical action controller. The second gate enables the operation of the remotely controlled equipment.

Abstract: A fingerboard latch arrangement includes an elongate support member, a latch which moves from a closed position into an open position and from the open position into the closed position, and an activation member which is connected to and which is movable longitudinally along the elongate support member. The activation member includes means to bring the latch from the closed position into the open position and from the open position into the closed position.

Abstract: A self-aligning apparatus for a lifting system includes a structure which includes a first element having a first projecting free end and a second projecting free end which each receive at least one sheave at a point of attachment to the first element, and at least two first points of rotation. The at least one sheave cooperates with at least one wire. The at least two first points of rotation are arranged above the at least one sheave's point of attachment to the first element so that the apparatus self-aligns during use in an uneven loading event.

Abstract: A hoisting system includes a hoisting cylinder assembly which is arranged vertically. The hoisting cylinder assembly includes at least one hoisting cylinder, a lower part, and an upper part, the upper part being moveable in relation to the lower part. At least one sheave is arranged in the upper part of the hoisting cylinder assembly. A winch which includes a base is fixed in relation to the lower part. A first wire is operatively connected to the winch and extends from the winch via the at least one sheave to a yoke so as to suspend the yoke from the at least one sheave.

Abstract: A hoisting system includes a hoisting tower, a yoke which is movable relative to the hoisting tower and which carries a tool, a first winch, a second winch, a first sheave arranged in a top section of the hoisting tower, a second sheave arranged in the top section of the hoisting tower, a first hoisting member arranged to extend from the first winch to the yoke via the first sheave, a second hoisting member arranged to extend from the second winch to the yoke via the second sheave, and at least one first releasable connector which selectively connects the second hoisting member to the yoke.

Abstract: A method for operating a drilling plant machine includes providing a drilling plant machine which includes a sensor which measures a parameter which is indicative of a jarring load acting on the drilling plant machine from a drill string, providing a set of values representing readings from the sensor, identifying a jarring event, and determining a magnitude of the parameter from the set of values.

Abstract: A winch system for driving an output includes a gear connected to the output, an electric motor connected to the gear, and a hydraulic motor connected to the gear. The electric motor and the hydraulic motor are distribute energy via the gear to the output.

Abstract: The top drive comprises a gear unit, a main spindle, and an active pressure generating device. The gear unit comprises a gear housing, an axial main bearing, and an axial auxiliary bearing. The axial main bearing comprises an upper main bearing part with rotates relative to the lower main bearing part. The lower main bearing part contacts the gear housing. The axial auxiliary bearing comprises an upper auxiliary bearing part which rotates relative to the lower auxiliary bearing part and contacts the gear housing. The main spindle rotates within the gear unit and contacts the upper main bearing part. The active pressure generating device is arranged between the upper auxiliary bearing part and the gear housing, the lower auxiliary bearing part and the main spindle, the lower main bearing part and the gear housing, and/or the upper main bearing part and the main spindle.

Abstract: A positive displacement pump includes a drive unit and a pump unit. The pump unit comprises at least one inline valve unit, a connecting and/or spacing device, and a pair of flanges which are connected to each other via the connecting and/or spacing device. In an operating position, the at least one inline valve unit is clamped between the pair of flanges. The at least one inline valve unit is configured to be displaced without removing the connecting and/or spacing device.

Abstract: A method of operating a drilling system includes suspending a tubular drill string from a travelling assembly into an opening on a drill floor, operating a sensor to measure and to provide a first signal, providing a second signal, and comparing the first signal with the second signal. The travelling assembly is a part of a hoisting system. The first signal represents an acceleration or a velocity of the tubular drill string in a direction into or a direction out of the opening. The second signal represents an operational parameter of the hoisting system. The operational parameter is indicative of a vertical speed or of a vertical acceleration of the travelling assembly.

Abstract: The present invention provides a hoisting system which includes at least one hydraulic hoisting cylinder, a pressurized gas reservoir, and an emergency lifting line with a first valve. The emergency lifting line selectively leads a pressurized gas from the pressurized gas reservoir into the at least one hydraulic hoisting cylinder.

Abstract: A device which moves a die between a retracted position, thereby releasing the die from the device, and an advanced position, thereby fixing the die to the device. The device includes an inner body comprising an inner body wall, and an inner body set of inclined faces. A body comprises a longitudinal groove. The longitudinal groove comprises an inner wall which contacts the inner body wall. An intermediate body comprises a first longitudinal side comprising a longitudinal side set of inclined faces, and a second longitudinal side arranged opposite thereto. The first longitudinal side cooperates with the inner wall. The second longitudinal side cooperates with a first side of the die. The longitudinal side set of inclined faces cooperates with the inner body set of inclined faces. A relative movement between the intermediate body and the inner body moves the die between the retracted position and the advanced position.

Abstract: A method for monitoring a condition of a mechanical system having an oil lubricated component. The method includes: (a) identifying a start of a load cycle, (b) measuring a load of the oil lubricated component, (c) measuring a temperature of a lubricating oil for the oil lubricated component, (d) calculating a first system performance parameter value for a load cycle, (e) repeating steps (a) to (d) for a plurality of load cycles, and (f) comparing a plurality of first system performance parameter values calculated to identify a change in the first system performance parameter values over the plurality of load cycles. The first system performance parameter value for the load cycle is selected from a friction coefficient for the oil lubricated component, a temperature increase coefficient for the lubricating oil for the oil lubricated component, and a temperature rise rate coefficient for the lubricating oil for the oil lubricated component.

Abstract: A riser tensioning system for providing a tensioning to a riser connected to a floating installation via a tension ring. The riser tensioning system includes at least one riser tensioner assembly. Each of the at least one riser tensioner assembly includes a riser tensioning cylinder comprising a cylinder rod, at least one sheave, and a wireline with a first end and a second end. The first end is fixed to the tension ring, and the second end is fixed to the cylinder rod. The wireline extends between the tension ring and the cylinder piston via the at least one sheave.

Abstract: A device for suspending a tubular from a floating vessel includes a first element which carries the tubular, a second element supported by the floating vessel, and a compression element which forms a connection between the first element and the second element. The compression element is pre-tensioned in an end stroke position so that, when the compression element is subjected to a force from the tubular which is below a pre-defined threshold force, the connection formed by the compression element between the first and second element is a rigid connection, and, when the compression element is subject to a force from the tubular which is higher than the pre-defined threshold force, the connection formed by the compression element between the first and second element is a compressible connection.

Abstract: A drawworks for a drilling device for lowering and hoisting a load such as a drill string or parts thereof includes a frame comprising a first bearing point, a second bearing point, and a third bearing point, a winding drum, and a first bearing device connected to the frame for the winding drum. The first bearing device is arranged so that a center of respective bearing forces is located at each of the first bearing point, at the second bearing point, and at the third bearing point.

Abstract: A back-up load retention system includes a retention line which is connected to a load, a counterweight unit which is connected to the retention line, and a double-acting hydraulic cylinder which is connected to the counterweight unit. The counterweight unit maintains a tension force in the retention line. The double-acting hydraulic cylinder brakes and/or stops the load in a case of a failure in a main lifting system.

Abstract: A system for controlling a remotely controlled equipment. The system includes an operator station with a main operating device which is operated by an operator to provide a main operating device signal, an operator station controller, and a confirmation operating device which is operated by the operator to provide a confirmation operating device signal. An equipment controller is connected to the operator station controller. A first gate is connected to the equipment controller. The first gate enables an operation of the remotely controlled equipment. A critical action controller receives the confirmation operating device signal. A second gate is connected to the critical action controller. The second gate enables the operation of the remotely controlled equipment.

Abstract: A deep water drilling riser pressure relief system includes a drilling riser extending from a surface down to a BOP stack arranged subsea. The drilling riser comprises a drilling riser slip joint, an annular preventer arranged below the drilling riser slip joint, and at least one pressure relief device arranged in a lower part of the drilling riser. The at least one pressure relief device is configured to open so as to discharge a fluid from the drilling riser to the sea if a pressure difference between an inside and an outside of the drilling riser exceeds a predetermined threshold.

Abstract: A lifting arm assembly for lifting an elongate element includes a lifting arm comprising a complementary fastener and at least one fastening element, and a holder for at least one tool which comprises a first complementary fastening device. The holder is configured to be replaceable. The holder comprises a suspension device configured to fasten to the complementary fastener on the lifting arm, and at least one first receiving device configured to cooperate with the first complementary fastening device on the at least one tool.