Tracer Simulation to Improve the Reservoir Model in the Snorre Field

Abstract

TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractThis paper presents the application of water tracer flow simulations as a means for better characterization of the Central Fault Block (CFB) reservoir in the Snorre field in North Sea. The simulations of the tracer flow were carried out using a numerical model, developed by the Institute for Energy Technology for modeling of tracer flow in porous media, coupled to CMG-STARS chemical/thermal simulator. The tracer data was first analyzed to establish reservoir continuity between three injectors and six producers in the fault block. Then, tracer flow simulation results were matched with measured tracer field data in order to improve the history match of the water cut in the reservoir model.History matching of tracer production profiles is presented together with history matching of water cut before and after the consideration of tracers to highlight the improvement of the reservoir model.

Practical methodology for interwell tracer applications

“…The importance of numerical simulation for interpreting the results of a tracer test lies in obtaining parameters of the fluid-rock system through the simulation of tracer injection in the reservoir with a finite-difference simulator or "streamline" [2] [57]. In cases where there is a reliable simulation model, the tracer simulation application can generate some important advantages for better characterization of the reservoir in terms of fluid flow paths, reservoir continuity, transmissibility and flow barriers.…”