Abstract: A device for cleaning and doping (lubrication) equipment for threads (3b, 4b) of the type used to join pipes (4) to a pipe string (3), especially in connection with petroleum production, where cleaning fluid and dope (lubricant) are sprayed at the threads (3b, 4b) at relatively high pressure from at least one nozzle (5, 6) mounted in the rotatable make-up section (1) of a power tong, and where at least one injection pump (7, 8) arranged to supply cleaning fluid or dope to the at least one nozzle (5, 6) is located in the rotatable make-up section (1).
Abstract: A hydraulic circuit device for activating the at least one clamping die (14) of a power tong (1), the power tong (1) including two housing halves (2), pivotable relative to each other, the housing halves (2) being arranged to be pivoted between a closed, active position and an open, inactive position, and a radially divided drive ring (6, 8) which is provided with the at least one hydraulically activated clamping die (14) directed towards the centre axis (10) of the power tong (1), being placed in the housing halves (2), the drive ring (6, 8) being supported and connected to at least one driving motor (12) for the rotation of the drive ring (6, 8) about the centre axis (10), and a hydraulic pump cylinder (16) being articulatedly connected between the first drive ring part (6) of the drive ring (6, 8) and the second drive ring part (8) of the drive ring (6, 8) and arranged to rotate together with the drive ring (6, 8) about the centre axis (10).
Abstract: Arrangement in a hose connector of a riser (2) provided between a wellhead and a floating surface installation (1). One or more hoses (3) form a flexible fluid communicating connection between an upper portion of the riser (2) and the floating surface instalation (1). The first end portion (211) of at least one fluid conduit (21) is fixed to the riser (2) by an upwardly directed, first pipe muzzle (212) and is provided with a rotatable connecting sleeve (213a, 213c). Each of one or more flexible hoses (3) is connected to a conduit spool (41) of a connecting assembly (4) provided with a second and pipe muzzle (42) that is arranged for releasable mating with the first end portion (211) of the fluid conduit (21). A lifting yoke (43) is connected to the connecting assembly (4) and forms an actuator (431) which is able to effect rotary motion to the connecting sleeve (213a, 213b, 213e) to enable engagement.
Abstract: A power tong (1) device, in which the power tong (1) includes two housing halves (2), pivotable relative to each other, the housing halves (2) being arranged to be pivoted between a closed, active position and an open, inactive position, and in which a radially divided drive ring (6, 8), which is provided with hydraulically activated clamping dies (14) directed towards the centre axis (10) of the power tong (1), is placed in the housing halves, the drive ring (6, 8) being supported and connected to a driving motor (12) for the rotation of the drive ring (6, 8) about said axis (10), the drive ring (6, 8) being provided with at least one locking means (16) which is arranged to interconnect the parts of the drive ring (6, 8) in a releasable manner.