摘要:
The disclosure provides a system and method for installing subsea equipment, such as a pipeline and equipment associated therewith in a target area, generally having restricted overhead access. An anchor can be installed in the seabed and can include one or more sheaves. A pipeline can be provided, which can include related equipment and/or one or more coupling devices situated remotely from the anchor relative to the target area. A winch wire can be provided and is adapted to be directly or indirectly coupled across at least a portion of the target area to the pipeline. A transfer sling having a pull wire and an initiation wire can be coupled between the winch wire and pipeline to assist the winch wire pulling the pipeline into the target area and transferring a pipeline force from the sheave to the anchor independent of the sheave.
摘要:
In this riser installation produced using a flexible pipe (10) of the unbonded type, the pipe (10) is positioned vertically between, on the one hand, a mechanical connection (7’) at the top to a surface installation (3) and, on the other hand, a mechanical connection (6', 6", 6'") at the bottom with the sea bed (5), fluidic connections being provided at the top and at the bottom to connect the riser on the one hand to surface equipment and on the other hand to sea bed equipment (2); the bottom of the riser is at a depth of at least 1000 m where it experiences a maximum calculatable reverse end‑cap effect F and tensioning means (8) impose at the bottom of the riser a reactive tension T greater than at least 50% or even 100% of the maximum calculatable reverse end‑cap effect F developed at the bottom of the riser.
摘要:
The invention concerns a device for regulating lateral buckling of a pipe section (10) comprising at least one device (11-15) for permanently applying a force on one spot of said pipe section, said force being preferably substantially horizontal and perpendicular to the axis of the pipe. Preferably, there are provided two devices for applying an equal and opposed force arranged at a specific distance from each other along the pipe section, each of the devices comprising a collar (15), a cable (12), a bell crank (14) and a buoy (11) or a weight.
摘要:
The clamping device (18) comprises at least four clamping components (30A to 30C) and connecting elements (32) comprising, for each clamping component (30A to 30C) at least one elastic tightening member (76) connecting a supporting member (40) of the clamping component (30A to 30C) with a supporting member (40) of a first adjacent clamping component (30A to 30C) and at least one elastic tightening member (78) connecting the supporting member (40) with a supporting member (40) of a second adjacent clamping component (30A to 30C). Each elastic tightening member (76, 78) comprises an elongated part and two end stops, each end stop cooperating respectively with a supporting surface (40), each elastic tightening member (76, 78) being longer than the transverse extent of a central lumen defined by the clamping components (30A to 30C), and protruding beyond the supporting members (40) connected by the elastic tightening member (76, 78).
摘要:
The clamping device (18) comprises at least four clamping components (30A to 30C) and connecting elements (32) comprising, for each clamping component (30A to 30C) at least one elastic tightening member (76) connecting a supporting member (40) of the clamping component (30A to 30C) with a supporting member (40) of a first adjacent clamping component (30A to 30C) and at least one elastic tightening member (78) connecting the supporting member (40) with a supporting member (40) of a second adjacent clamping component (30A to 30C). Each elastic tightening member (76, 78) comprises an elongated part and two end stops, each end stop cooperating respectively with a supporting surface (40), each elastic tightening member (76, 78) being longer than the transverse extent of a central lumen defined by the clamping components (30A to 30C), and protruding beyond the supporting members (40) connected by the elastic tightening member (76, 78).
摘要:
The present invention relates to a method for laying a submarine line (1) on the seabed (20) from the surface (30), to connect the lower end (la) thereof to a connection element (11a) on the seabed, characterized by carrying out the steps of: 1) positioning said submarine line suspended from the surface (30) in a substantially vertical position (7) with the lower portion (1-1) thereof, including a bending device extending between two points (la, 1b), referred to as attachment or guiding points, including at least one cable (5) and tensioning means (6-1 to 6-5) for said cable, which are capable of decreasing the cable length extending between the said two attachment or guiding points (la, 1b), from a maximum length L0 to a given lower limit value L1, and 2) moving the lower end (1c) of said submarine line, in such a manner as to separate (D) the lower end (1c) of said submarine line from the initial position thereof of step 1), and 3) if necessary, moving said submarine line (1) by bringing it close to the seabed (20), concomitantly with the additional lowering of said line, from the surface (30), and then 4) completing the positioning and the connection of said lower end (1c) of the line on the seabed.
摘要:
The disclosure provides a system and method for installing subsea equipment, such as a pipeline and equipment associated therewith in a target area, generally having restricted overhead access. An anchor can be installed in the seabed and can include one or more sheaves. A pipeline can be provided, which can include related equipment and/or one or more coupling devices situated remotely from the anchor relative to the target area. A winch wire can be provided and is adapted to be directly or indirectly coupled across at least a portion of the target area to the pipeline. A transfer sling having a pull wire and an initiation wire can be coupled between the winch wire and pipeline to assist the winch wire pulling the pipeline into the target area and transferring a pipeline force from the sheave to the anchor independent of the sheave.