Flow Simulation

RMSFlowsim is a fully integrated black-oil simulator within the RMSTM environment. A graphical user interface links RMS with the reservoir simulator Tempest MORE, which then can be executed as part of any workfl ow within RMS. Access to dynamic simulations will offer the possibility to investigate dynamic uncertainty, perform forecasting, or rank models as part of an integrated study within RMS.

Integrated Static and Dynamic Modelling

RMSFlowsim was designed for geologists and reservoirengineers operating in an asset team environment. Sharing a single data model within the team leads to productivity gains and improved understanding of the reservoir management tasks at each point in the modeling process. By including dynamic data (production profi les, well tests and pressure measurements) earlier in the modeling process, the geologist will be able to handover upscaled simulation models that are better fi tted for history matching by the preferred in-house full fi eld simulator.

Integration

RMSFlowsim uses the RMS GUI and data managementconventions. This permits an RMSFlowsim job to be easily copied within or across zones to encourage sensitivity analysis. The job can be placed in the Workfl ow Manager and executed across realisations.

RMSFlowsim has access to all RMS grid parameter data within the zone. The index parameters can be used to set up sub-regions of the grid within which different rock and fl uid properties can be set. These are also used for defi ning reporting regions.

The results of the simulation can be displayed in the same 3D window as the original geological model. The time dependent well and group profi les can be plotted in the Data Analysis Window of the multiviewer. The output from multiple simulations created from different jobs or realisations can be compared. The P10, P50 & P90 envelopes can be displayed as shown in the fi gure below.

IN SUMMARY

• Fully integrated three-phase black-oil fl ow simulator.

• Improves cross-disciplinary integration in the asset team.

• Offers easy and keyword-free access to a reservoir simulator.

• Additional access to all simulator keywords through a keyword editor.

• Extensive range of well and group controls.

• Visualisation of static and dynamic data in the same powerful viewer.

• Post-processing of dynamic data.

ROXAR AS, GAMLE FORUSVEI 17, PO BOX 112, 4065 STAVANGER, NORWAY TELEPHONE +47 51 81 8800 FAX +47 51 81 8801 WWW.ROXAR.COM

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Flow Simulation

Input Data

Traditionally RMS has been used to create, edit and manage the static data required for reservoir simulations. RMSFlowsim extends the data model to include automatic calculations of well connection factors and time dependent well controls.

Grid: The simulation grid can be a sector of a geological model or an upscaled model. An index parameter can be used to set regions inactive.

Grid Properties: A RMSFlowsim job uses the output from an existing Transmissibility Job. This contains the effects of all fault multipliers and can easily be modifi ed to test the effect of sealing faults. The porosity and net to gross properties are selected from pre-calculated parameters or as grid wide constants.

Fluid & Rock Properties:The property tables can be generated from industry standard correlations, or imported from a full fi eld simulation model. Graphical plots of this data allow it to be quality controlled before starting a job.

Wells: Wells are loaded upstream in RMS. The set of wells and any group hierarchy can be selected in RMSFlowsim. The wells are manipulated in real world coordinates. The perforated sections can be set in TVD or measured depth intervals or according to well log properties. For example, it is possible to perforate only the grid blocks corresponding to the channel sands of a defi ned facies (see Figure above right).

Events: The well, group controls and any economic limits are supplied in event tables. These are time dependent tables that start and end at specifi ed dates. The engineer need not supply these in time order as is required by conventional keyword simulators. RMSFlowsim automatically threads through the complete set of events selecting them in the correct order.

Reservoir Simulation

RMSFlowsim contains a comprehensive reservoir simulator employing robust fully implicit solver techniques to handle demanding reservoir engineering problems. It models multi-phase fl ow using the standard black oil model description.

Automatic intelligent coarsening algorithms can be used to dramatically reduce the number of cells while retaining the dynamic response of the reservoir. It offers extensive well and group control modes including economic limit conditions on wells, group and fi eld level quantities.

The 3D solution arrays: pressure, absolute and mobile saturations, and their variations over time are reported. Well production and injection profi les of fl uid rates, cumulatives, pressures and regional averages are available by default.

To learn more please visit www.roxarsoftware.com or emailus on rss.marketing@emerson.com.