Abstract:
A device for drilling offshore wells, where a riser (24) connected to a wellhead (20) extends up to the surface of the sea, and where the load on the riser, also during drilling operations, is taken up by a buoy (1), preferably via heave compensating means (2).
Abstract:
A device for placing pipes (5') into a case (1) and taking pipes (5) out therefrom, wherein the pipes (5) are placed in stacks (2, 3, 4) each with one pipe across, and wherein the stacks are supported laterally by supports (6, 7, 8, 9) projecting upwardly from the bottom of the case (1). The bottom of the case (1) is provided with apertures (10, 11), and the case (1) is carried by a tilting device (13) capable of raising and lowering the case (1), respectively, and of turning it about an axis (14) parallel to the pipes (5) within the case (1), to take an unloading position and a loading position, respectively, wherein the supports (6, 7, 8, 9) are nearly horizontal, flushing with a substantially horizontal support for pipes (5), and wherein a pushing device (16) is adapted to be guided through the apertures (10, 11) in the nearly vertical bottom of the case (1), in order to push pipes (5) laterally out of the case (1), upon said support, which may be a conveyor belt or another conveyor (12).
Abstract:
A system for managing replacement components for equipment (300, 400) having a plurality of components each with a limited useful life has a computer (40) with a processor (100). The system includes a computer program module for defining a duty profile (220) comprising a plurality of usage cases for the equipment (300, 400), each usage case involving two or more of the plurality of components and specified operating conditions assumed to be experienced by the involved components during the execution of each of the usage cases. There are also a computer program module for determining a theoretical useful life for each component involved in a duty profile (220), the theoretical useful life being based on component useful life data under the specified operating conditions; and sensors (302, 402) for determining and monitoring the occurrence of equipment operation corresponding to a usage case.
Abstract:
A system for managing replacement components for equipment having a plurality of components each with a limited useful life has a computer with a processor. The system includes a computer program module for defining a duty profile comprising a plurality of usage cases for the equipment, each usage case involving two or more of the plurality of components and specified operating conditions assumed to be experienced by the involved components during the execution of each of the usage cases. There are also a computer program module for determining a theoretical useful life for each component involved in a duty profile, the theoretical useful life being based on component useful life data under the specified operating conditions; and sensors for determining and monitoring the occurrence of equipment operation corresponding to a usage case and measuring the actual operating conditions experienced in the operation and the number of such operations. A further computer program module computes an adjusted theoretical useful life for a component that has experienced one or more operations, based on a comparison of actual operating conditions to operating conditions assumed to be experienced in the operation of the usage case.
Abstract:
A device and a method concerning a mooring buoy (1) for mooring a drilling vessel (28) during drilling operations, wherein the drilling vessel (28) is connected to the mooring buoy (1) by means of buoyancy-induced frictional forces between the mooring buoy (1) and the drilling vessel (28).
Abstract:
A device and a method concerning a mooring buoy (1) for mooring a drilling vessel (28) during drilling operations, wherein the drilling vessel (28) is connected to the mooring buoy (1) by means of buoyancy-induced frictional forces between the mooring buoy (1) and the drilling vessel (28).
Abstract:
A method of drilling sub-sea oil and gas production wells in which a liquid hydrocarbon substance, such as a natural gas liquid, is injected into the drilling mud supplied to the well in order to reduce the mud density. The method of the present invention enables reduction and control of the hydraulic pressure of the drilling mud while drilling production wells in deep water, thereby to require fewer casing runs which eventually yields better oil productivity.
Abstract:
An arrangement for transferring loads by means of one or more hydraulic cylinder-like actuators (19, 26, 40) in order to establish and maintain tension in a riser (1) of the type typically used in offshore petroleum production, where the riser (1) constitutes a connection between the sea bed (2) and an installation (4) on or near the surface of the sea (6), and where the required pressure difference between the pressure side(s) (18, 42) and the depressurised side(s) (17, 46) of the actuator(s) (19, 29, 40) is constituted by a hydrostatic pressure difference.
Abstract:
A device serves to interconnect pipes (3) to form a casing (1). A new pipe (3) to be added to the top of the casing (1), is suspended from an elevator (4) assigned a drawworks, the latter being assigned a top drive (7) above the elevator (4). The device comprises a tubular hydraulic telescopic device (9, 10), one end thereof being connected to the output shaft (8) of the top drive (7), the other end thereof being provided with a catcher (11) adapted to catch, raise and rotate the pipe (3). The catcher (11) is adapted to be guided into the pipe (3) and to be expanded to rest against the pipe and, thus, to establish an internal friction connection.
Abstract:
A manipulator arm (4) for tools (7, 8, 12) for use in connection with a pipe joint or an end of a suspended drill string (3), wherein jointing is assisted by an iron roughneck (1), and wherein the manipulator arm (4) is disposed on the vertically positionable portion (2) of the iron roughneck (1). The manipulator arm (4) may e.g. be assigned a cleaning tool (7) and a lubricating tool (8) for cleaning and lubricating threads in the end of the drill string (3), as well as a mud box (12) for intercepting and diverting drilling mud in connection with an opening of a pipe joint of the drill string (3).