Subsea wellhead assembly
AssigneeEquinor Energy AS
InventorsLorents REINÅS, Tore Geir WERNØ, Morten SÆTHER, Harald Sigurd NESSE
Life of this patent
Estimating the term…
Abstract
A method of installing or removing a subsea wellhead assembly is provided. The method comprising providing a suction anchor that in use acts as a subsea well foundation, wherein the suction anchor comprises an outer suction skirt; and an inner member, wherein the inner member comprises a high pressure wellhead housing; and installing or removing the suction anchor together with the high pressure wellhead housing on or from a seabed.
Claims61
A method of installing or uninstalling a subsea wellhead assembly, the method comprising:
- providing a suction anchor that in use acts as a subsea well foundation, wherein the suction anchor comprises an outer suction skirt;
- and an inner member, wherein the inner member comprises a high pressure wellhead housing;
- and
- installing or uninstalling the suction anchor together with the high pressure wellhead housing on or from a seabed.
A suction anchor for forming, or having previously formed, a subsea well assembly, the suction anchor comprising:
- an outer suction skirt;
- and an inner member integral with the outer suction skirt, wherein the inner member comprises a high pressure wellhead housing.
A well assembly, the well assembly having a suction anchor that acts as a foundation for the well, wherein the well assembly does not comprise a low pressure conductor or a central suction anchor tube.
A subsea wellhead assembly comprising:
- a conductor housing, wherein the conductor housing does not support a conductor pipe.
A suction anchor for forming a subsea well assembly, the suction anchor comprising:
- an outer suction skirt, and an inner member integral with the outer suction skirt, wherein the inner member comprises a high pressure wellhead housing and a conductor housing, and wherein inner member does not comprise a low pressure conductor pipe.
A subsea wellhead assembly, the assembly comprising:
- a suction anchor comprising an outer suction skirt and an inner pipe connected to the outer suction skirt;
- a collar located above the inner pipe;
- and a high pressure wellhead housing located within and supported by the collar, wherein the assembly does not comprise a conductor pipe.
A subsea wellhead assembly comprising:
- a high pressure wellhead housing, wherein the high pressure wellhead housing does not support a wellhead housing extension pipe.
Dependencies are inferred from the claim text.