Pressure Balanced Modelling for Generating Production Forecast in an Integrated Oil and Gas Asset. A Pilot Case Study

Abstract

Integrated Asset Pressure Balanced Modelling involves the coupling of the reservoir dynamic and surface facilities models into a single integrated tool that allows the simulation of the whole oil/gas field system. The pilot study was conducted on the company’s export gas portfolio using pressure balanced model (PBM) in a Hydrocarbon Field Planning Tool (HFPT) platform. In the simulation, HFPT uses a pressure-balanced solution of the integrated system: from the reservoir(s), through wells and surface facilities, to the delivery point. A wide range of fluid models is available, from simple gas-condensate and black oil PVT models to multi-component models with EOS flash calculations. HFPT provides optimization functionality for maximizing the returns in oil and gas fields, while accommodating operational preferences for production allocation and network constraints. The results from this pilot indicate a successful integration of all subsurface discipline and surface data to create a pressure balance model that support our export gas supplies to NLNG. It also provides the platform to test the impact of the supply/facility constraints on our different portfolio projects.