초록 ▼

A method of conducting operations to an offshore field from multiple separated drill centers using a floating vessel having a turret-mounted mooring element and a workstation separate from the mooring element in which the vessel is moored at a central mooring element location and operations are sequ

A method of conducting operations to an offshore field from multiple separated drill centers using a floating vessel having a turret-mounted mooring element and a workstation separate from the mooring element in which the vessel is moored at a central mooring element location and operations are sequentially carried out at separate drill centers associated with the mooring element location by allowing the vessel to weathervane to a heading associated with a subsequent drill center once operations have been completed at a first drill center.

대표청구항 ▼

1. A method of conducting operations to an offshore field from multiple separated drill centers, the method using a floating vessel having a turret-mounted mooring element and further having a workstation horizontally spaced apart from the mooring element, comprising the steps of:a) locating the moo

1. A method of conducting operations to an offshore field from multiple separated drill centers, the method using a floating vessel having a turret-mounted mooring element and further having a workstation horizontally spaced apart from the mooring element, comprising the steps of:a) locating the mooring element approximately over a first mooring element location; (b) limiting the horizontal movement of the mooring element using a plurality of mooring lines extending from the mooring element; (c) allowing the vessel to weathervane such that the workstation is substantially vertically aligned over a first drill center associated with the first mooring element location; (d) temporarily restraining the weathervaning of the vessel; (e) using the workstation to conduct operations in at least one well from the first drill center to the field; (f) removing the weathervaning restraint while continuing to limit horizontal movement of the mooring element and repeating steps (c), (d) and (e) for one or more additional drill centers associated with the first mooring element location.