School Overview

*Prerequisite - Merlin and Apprentice Basic School

The 3-day school is a continuation of Part 1.  Students should have either attended Part 1, or had several months of hands-on experience building models with the GSI products.  Students completing the course will build multiple reservoir simulation models from scratch during the school as well as learn digitizing, mapping and simple geostatistics using Apprentice.

Advanced Merlin features such as regions, building aquifers, grid refinement. Gas condensate and volatile oil modeling, solution techniques, and tubing curve/flow line integration are among the topics covered in this school.

Graduating students will be functional in many of the advanced features in Merlin, Apprentice and Avalon. A demonstration of the Prophet data filtering interface can also be performed for interested parties.

Course Outline

Apprentice Introduction Digitizing Exercise

• Digitize bit map on screen using the mouse
• Import wells from an Excel spreadsheet

Practical Apprentice Digitizing and Mapping Exercise

• Digitize maps
• Draw grid on the map
• Generate different geostatistic interpretations
• Perform volumetrics
• Create new maps using grid to grid operations
• Export maps to Merlin

Merlin Advanced Features Review

• Regions – PVT, lease, rock , calculation
• Orthomin Solver – tightening solver constraints
• New IMPES solver with flowing bottom hole pressure included
• Hydraulic Fracture Modeling
• Gas Condensate/Volatile Oil Modeling
• Lock parameters
• Juxtaposition modeling

Using Rock, Calculation and Lease Regions in A Full Field History Match Example

• Build rock regions in Apprentice
• Build calculation regions for history matching in Apprentice
• Build lease regions for tracking fluid movement in Apprentice
• Migrate regions to Merlin
• History match using the calculation regions

Building Aquifers, History Matching, and Implementing/Analyzing Grid Refinement in a Full Field Model

• Add aquifer to full field model
• Adjust aquifer size and orientation until history match obtained
• Review effects of grid refinement on history match

Gas Condensate Simulation – depletion drive and gas cycling

• Review of PVT requirements and theory in general
• Correlations available for characterizing PVT data
• Building a simple lab test in Merlin to reproduce a lab test
• Building a Full Field Model
• Running depletion drive and gas cycling production schemes

Integrating Tubing Curves

• Build simple tubing curves in Avalon
• Link tubing curves to full field model
• Run model with and without tubing curves