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Optimization of the Norne FPSO production using Reservoir Coupling in Eclipse
Norwegian University of Science and Technology, Faculty of Engineering Science and Technology, Department of Geology and Mineral Resources Engineering.
2012 (English)MasteroppgaveStudent thesis
Abstract [en]

Six reservoirs are currently producing to the Norne Floating Producing Storage Offloading (FPSO) vessel. Over the next four years, two new reservoirs will be tied back to the ship. The total production potential of liquid, water and gas is expected to exceed the available capacity of the surface facilities. In order to honor the processing constraints using the existing facilities, the production needs to be choked. In this thesis, the main focus was to optimize the oil and gas production on the Norne FPSO within the available capacities of water treatment and gas processing, using the commercial reservoir simulator Eclipse 100. A sensitivity analysis for the use of gas lift has been carried out, using the Urd stand-alone model. The alternatives of choking the production in Eclipse were also studied. Three methods are explained in detail and applied to the Norne stand-alone model. These are: i) The Fraction Method ii) Use of Guide Rates iii) Use of Priority Rules To observe the overall production rates, and prioritize the usage of the process facility between fields that are producing to the Norne FPSO, the Reservoir Coupling (RC) facility in Eclipse was used, in contraction with Eclipse optimization tools. The simulated hydrocarbon production is maximized in two ways: i) By choking the high Water Cut (WC) wells on Norne ii) By favoring Alve gas production over gas lift usage on high WC producers on Urd The results from the RC model indicate that it is possible to constrain the water production on Norne, minimize the gas lift on Urd, and at the same time maintain the oil production rate. Above all, this thesis has intended to show that it is important to employ a good production strategy to optimize the hydrocarbon recovery.

Place, publisher, year, edition, pages
Institutt for petroleumsteknologi og anvendt geofysikk , 2012. , 111 p.
URN: urn:nbn:no:ntnu:diva-24847Local ID: ntnudaim:7198OAI: diva2:722896
Available from: 2014-06-09 Created: 2014-06-09 Last updated: 2014-06-09Bibliographically approved

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