walt king, petroleum engineer1 pttc simulation users group an overview of the exodus simulation...

Walt King, Petroleum Engineer 1

PTTCSimulation Users Group

An Overview of the Exodus Simulation Computer Program

October 23, 2003

Presented by Walt King, PE


Exodus SimulatorPresentation

• General Overview.

• A little more detail.

• Data Input Helps.

• Debug Helps.

• Lets run some cases and take a look.


EXODUSReservoir Simulator for Microsoft Windows

• Designed for use with Windows 98, 2000, NT, XP.

• Graphical User Interface.

• Full on line help.

• Menu or Spreadsheet type data entry.

• Easy exchange between other Microsoft Windows Applications.

• Computer Assisted History Matching.

• 2D and 3D Visualization PLUS Animation

• Very User Friendly

• WWW.PETROSTUDIES.COM


General Description

• Fully Implicit, 3 phase, 3D, with 2 or more components

• Black oil (3 component) or Dry Gas (2 component), or

• Will Handle as many as 9 Miscible components – K value formulations.

• Field or Metric Units.

• Calendar Dates or Day numbers.

• Full Field or Automatic Generation of Pattern, or radial.


General Description Continued

• Polymer or Alkali Surfactant Polymer flooding.

• Pressure Transient Analysis.

• Hydraulic Fracturing. (Template or Local Grid

Refinement)

• Coal Bed Methane (with and w\o CO2 and N2 injection)

• Horizontal wells

• Water, Gas or CO2 Flooding

• Dual Porosity/Dual Permeability


A Little More Detail• Historical Data entry from Excel Spreadsheet or Commercial Source.• Cell data input:

• Manual (direct entry, add, subtract,multiply, do “if”)• Digitized map (s)• Formula• Exodus Interpolation• Excel Spreadsheet• Import from previously defined saved Reservoir data file.• Computer Assisted History Matching

• Fluid Data Input: (up to 10 data sets)• Manual for PVT data• Import from previously saved PVT data file• Excel Spreadsheet• Built-in “Standing’s Correlation”


Even More Detail

• Relative Permeability (Saturation Functions)

• Manual Input from Special Core Analysis.

• Excel Spreadsheet.

• Built in “Honarpour & Larson-Hirasaki Correlations”.

• Computer assisted History matching.

• Rescale Function.

• Well Locations

• Manually

• From Excel Spreadsheet.

• Mouse Click

• X, Y, & Z Direction


More ..

• Time Dependent & Pressure Dependent Parameters.• Program Execution:

• Run in foreground or background.• Setup up to 10 files to run sequentially.• Set up to compute now or later.• Watch computation status on Status Menu.• Watch production plot as computation progresses.

• Output Plots:

• Easy to setup plots yourself. • Use Exodus predefined plots.• Duplicate well plots using Template.• Easy to Change output file being plotted.


Still More…

• Tabular Well Reports

• Individual well by date.

• Group of wells on a given date.

• Wells by parameter by date.

• Summary of field or pre defined group of wells.

• Individualize your report by column parameter.

• Grid Display Utility

• 2 D or 3 D display.

• Animated display.

• Data display.

• Tabulation of Oil, Gas, Water in place by time.


Where to Get Help Running the Program

• PetroStudies - Exodus User Course (Beginner & Intermediate).

• Computer user instruction manual-160 pages-Print or watch on screen.

• Movies Illustrating how to set-up and run various problems.

• Push F1 key for detailed help.

• Required items are CAPITALIZED or noted “R” (“O”=optional)

• Message Box makes suggestions when arrow touches cell.

• If data is outside of “envelope” or data does not fit computation conditions, screen message will “ping” and make suggestions.


Getting Help Debugging your file

• Exodus makes a final check when you save Data file.

• Simulator Status File has Messages detailing run history and problems that occurred during the computation run.

• Cell error map shows which cells had problems computing and whether it was with oil, gas, or water phase.

• You can watch run in progress on status screen and see where simulator has difficulty converging.


Now… Lets Try Some Cases

• “Exodus Ignition”

• “Pre-Processor” - Input Data

• Primary Gas Production

• Waterflooding with a horizontal well

• Polymer Flood

• CO2 Flood

• CBM Forecast

• Frac Model

• Local Grid Refinement

walt king, petroleum engineer1 pttc simulation users group an overview of the exodus simulation...

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