A connection structure for connecting a seabed anchor to a superstructure for electrical power engineering has a horizontally encircling, vertically extending wall, which bounds a spatial region inside the connection structure. A first connecting section is configured for connection to the superstructure. A second connecting section is configured for connection to the seabed anchor.

A suction bucket for a seabed foundation for an offshore facility is provided. The suction bucket is arranged for being embedded into a marine sediment. The suction bucket includes a lid and a sidewall. The sidewall is segmented into a first circumferential segment and at least a second circumferential segment. The first circumferential segment is connected with the second circumferential segment. The first circumferential segment and the second circumferential segment are attached to the lid of the suction bucket. Furthermore, the first circumferential segment and the second circumferential segment each contains at least one substantially planar section. Furthermore, a method to manufacture a suction bucket for a seabed foundation for an offshore facility is also provided.

A suction anchor for a subsea well is provided. The suction anchor comprises: a wellhead support structure, wherein the wellhead support structure is at least in part external of the internal volume.

The present techniques are directed to systems and a method for reducing trenching around piles. An exemplary method includes attaching a mooring line to one end of a padeye extender bar that is coupled by another end to a padeye on the pile. The pile is installed in a sediment layer. The padeye extender bar is deployed to hold an attachment point for the mooring line above the sedimenlt layer.

There provides an auxiliary structure for floating and sinking the whole offshore wind turbine with suction bucket foundation(s), which includes an upper bracket floated on water and a lower bracket sunk synchronously with a support structure. The upper bracket includes upper floating boxes; upper cross-connectors each of which is fixedly connected to the upper hoop and a corresponding upper floating box; and an upper hoop configured to sleeve on an outer side of the support structure. The upper bracket and the support structure are relatively moved in an up and down direction, and are connected in a manner of limiting position. The lower bracket includes lower floating boxes, a bottom of each of which is adjustable in height; lower cross-connectors each of which is fixedly connected to the lower hoop and a corresponding lower floating box; and a lower hoop that holds the support structure tightly.

A subsea assembly comprising; a foundation, a support device; and a subsea equipment adapter frame is provided. The foundation, support device and subsea equipment adapter frame are separate modular components that can be installed separately. The foundation may be a suction anchor. A method of installing and uninstalling the subsea assembly is also provided.

An unmanned wellhead platform (1) (UWP) comprising a jacket (10) designed and adapted to be supported on the seabed and projecting above the sea level is shown. The unmanned wellhead platform (1) includes a topside installed on top of the jacket (10). The topside is designed as a standardized base concept tailored for repetitive future topside constructions (3). Each topside construction (3) is adapted to the number of wells to be developed. The topside construction (3) is made up by a number of different but standardized sections (4). Each standardized section (4) is dedicated for a particular and predetermined purpose and location in the topside construction (3).

A connection structure for connecting a seabed anchor to a superstructure for electrical power engineering has a horizontally encircling, vertically extending wall, which bounds a spatial region inside the connection structure. A first connecting section is configured for connection to the superstructure. A second connecting section is configured for connection to the seabed anchor.

A subsea foundation for installation on a sea floor. The subsea foundation includes a receptacle which receives a wellhead housing, and a conductor pipe which is arranged to extend from the receptacle and which receives a well pipe therethrough. The conductor pipe has a first section and a second section. The first section of the conductor pipe has a first end and a second end. The first section is connected to the receptacle at the first end and is pivotably connected to the second section at the second end so that the conductor pipe has a compact configuration, in which the conductor pipe comprises a bend therein, and an extended configuration, in which the conductor pipe is substantially straight.

The invention relates to a seabed foundation (1) for an offshore facility, comprising a primary pressure chamber (7) connected to a primary pump (8) and one or more secondary pressure chambers (9) connected to one or more secondary pumps (10). According to an embodiment of the invention, said primary pump is a suction pump and said secondary pump is a pressure pump. The invention further relates to a method (12) of installing said foundation on the seabed (19), which comprises the steps of activating (14) said primary pump to create negative pressure in the primary pressure chamber (7), so that the foundation sinks into the seabed, and activating (15) said one or more secondary pumps (10) to create positive pressures in the secondary pressure chambers (9), so as to control the alignment of the foundation with respect to a substantially horizontal axis (16) during the sinking into the seabed.