In order to properly assess the economics of Cold Flow, one should properly assess its effect on the resistances to flow from the reservoir and hence expected future revenue (i.e. production profile) from the project. Traditionally, Integrated Production Models (IPM) are used to calculate production profiles subject to resistances to flow between the reservoir and the sales point. However, traditional IPM tools have relatively simplistic physical model of the flowing system. Many must make "black oil" assumptions and ignore thermal effects in order to run in a reasonable timeframe. Of the few that can carry out thermal hydraulic compositional network simulations, most were generally only designed to trace three phases (gas, oil and water) and hence cannot be used to assess the economics of cold flow technologies. This paper describes how various cold flow and conventional technologies were investigated using a unique combination of an IPM tool, a topsides process simulator and a PVT tool that can all trace several thermodynamic phases. The formation and dissociation of the gas, liquids and hydrate phases were predicted and tracked throughout the system, subject to the local pressures, enthalpies and compositions. In doing so, the effect of the presence of hydrates on the field life thermal hydraulics, including the production profile could be modelled. Some counter intuitive results were found in the comparison to conventional technologies; hydrate slurries are not all bad news for the back pressure on the wells. However, not only was the production profile forecasted, but also numerous practical issues associated with cold flow could be investigated.

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