Abstract: A system and method for processing natural gas produced from a subsea well is disclosed. The system includes a subsea processing system configured, in use, to receive a natural gas produced from a subsea well, separate free and condensable liquids comprising water and, optionally, liquid hydrocarbons therefrom, and produce a dry single phase gas. The system also includes a surface production facility having a processing system located thereon for processing the free and condensable liquids separated in the subsea processing system and one or more risers for transporting the separated free and condensable liquids to the processing system on the surface production facility. The dry single phase gas produced in the subsea processing system is transported to an onshore production facility via a subsea pipeline. The subsea processing system operates at high pressure and the processing system on the surface production facility operates at low pressure.

Abstract: A system and method for processing natural gas produced from a subsea well is disclosed. The system includes a subsea processing system configured, in use, to receive a natural gas produced from a subsea well, separate free and condensable liquids comprising water and, optionally, liquid hydrocarbons therefrom, and produce a dry single phase gas. The system also includes a surface production facility having a processing system located thereon for processing the free and condensable liquids separated in the subsea processing system and one or more risers for transporting the separated free and condensable liquids to the processing system on the surface production facility. The dry single phase gas produced in the subsea processing system is transported to an onshore production facility via a subsea pipeline. The subsea processing system operates at high pressure and the processing system on the surface production facility operates at low pressure.

Abstract: A system and method for subsea cooling a wellhead gas containing components separable by dewpoint condensation to produce a single phase dew-pointed gas for pipeline transport is disclosed. The system includes a first cooling apparatus configured in use to cool the wellhead gas in direct or indirect heat exchange relation with ambient seawater to a first temperature marginally above ambient seawater temperature to condense liquids comprising one or more hydrocarbons other than methane and at least partially condense water in the wellhead gas. The system also includes a first separator to separate the condensed liquids and water from the cooled gas and a means to add a hydrate inhibitor into the separated cooled gas.