Equinor Energy As

Statoil Petroleum As

Per Osen

Lorents Reinås

Harald Sigurd Nesse

Morten Sæther

Lorents Reinas

A wellhead load relief device for reducing riser system induced load effects on a subsea wellhead and a method of installing a subsea wellhead assembly onto a subsea wellhead using the wellhead load relief device. The wellhead load relief device includes: a receptacle for receiving well control equipment, wherein the receptacle has an open top to permit the well control equipment to be received in the receptacle; and an adjustable support mechanism for rigidly supporting well control equipment received in the receptacle. The adjustable support mechanism is located within the receptacle and the adjustable support mechanism has a lateral extent that is adjustable relative to the receptacle. The wellhead load relief device is for providing a load path for forces exerted on the well control equipment to the seabed without going via the subsea wellhead. A subsea wellhead assembly including the wellhead load relief device is also provided.

Wellhead load relief device

A connector for connecting two subsea well assembly components; wherein the connector is arranged such that it can be preloaded in both tension and compression concurrently. The connector includes a tension part which in use can be in tension and a compression part that in use can be in compression. The tension part has an adjustable length and/or the compression part has an adjustable length. There is also provided a subsea well assembly, that includes a first subsea well assembly component; and a second subsea well assembly component; wherein the first subsea well assembly component and the second subsea well assembly component are connected to each other to provide a well conduit therebetween. The first subsea well assembly component and the second subsea well assembly component are connected such that forces can be transmitted both in tension and compression between the two components without going through the well conduit.

Connector

A subsea wellhead assembly and a method of installing a subsea well head assembly. The subsea wellhead assembly includes: a conductor; a subsea wellhead; and subsea riser system equipment mounted on the subsea wellhead. The subsea riser system equipment is connected to the conductor such that forces can be transmitted from the subsea riser equipment to the conductor in both tension and compression.

Subsea wellhead assembly

A subsea wellhead assembly is provided. The subsea wellhead assembly comprises: a conductor; a subsea wellhead; and subsea riser system equipment mounted on the subsea wellhead; wherein the subsea riser system equipment is connected to the conductor such that forces can be transmitted from the subsea riser equipment to the conductor.

A subsea wellhead assemblycomprises: a subsea wellhead; a templateassociated with the wellhead; subsea riser system equipmentconnected to the wellhead and one or more connection members. The subsea riser system equipmentis also connected to the templateby the one or more connection members so that lateral support is provided to the subsea riser system equipmentfrom the template. A method of installing the subsea wellhead assemblyis also provided.

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Oslo, Norway

Per Osen