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Advanced Analysis Workflow

This guide provides a technical tutorial on using the Analysis module to perform reservoir engineering and production diagnostics. You will learn to filter datasets, perform multi-well decline analysis, and conduct dynamic data diagnostics.

Step 1: Data Selection & Consolidation

Before starting your analysis, you must define the wells you wish to study.

  1. Wells Selection (The Map & Attributes): Navigate to the Wells Selection tool.
    • Spatial Selection: Use the map interface to draw polygons around specific pads or acreage.
    • Attribute Selection: Use the filter panel to select wells by formation (e.g., Vaca Muerta), operator, or production status.
  2. Well List (Quality Control): Switch to the Well List view. Review the metadata for your selection. You can sort by cumulative production or IP to identify outliers. If a well has bad data, deselect it here.
  3. Merge Groups (Scenario Building): Use the Merge Groups tool if you need to combine wells from different existing projects or scenarios into a single analytical unit. This is critical for building “best-of-class” benchmarking groups.
  4. Save Group: Once satisfied, save your selection as a named Group. This group will now be available across all Analysis sub-modules.

Step 2: Production Diagnostics & DCA

Now, you will forecast the future performance of your selected group.

  1. Choose Analysis Mode:
    • Single Well DCA: Use this for detailed, individual well matching. Manually adjust the Arps’ parameters (Di, b-factor, Dlim) to fit the production history perfectly.
    • Multi Well DCA: Use this for batch processing. Apply a “Best Fit” algorithm to hundreds of wells simultaneously to generate a rapid portfolio forecast.
  2. Apply Normalizations: To compare wells of different lengths or vintages, use the Normalizations tool:
    • Time Zero Sync: Aligns all wells to the start of their production life, allowing you to compare early-life performance directly.
    • Lateral Length Scaling: Divides production by the perforated length (e.g., Oil per 1,000 ft), neutralizing the advantage of longer wells.
  3. Generate a Type Well Profile:
    • Use the Type Well tool to calculate a representative profile for the group.
    • Probability Tiers: Select P10 (Optimistic/High), P50 (Median/Expected), and P90 (Pessimistic/Low) lines to define the range of uncertainty for your development planning.

Step 3: Dynamic Data Analysis (DDA) & Reservoir Physics

Go beyond decline curves to understand the physics of your reservoir.

  1. PVT & Pressure Setup:
    • PVT Properties: Input the fluid properties (Gas-Oil Ratio, Oil API, Water Salinity) to model phase behavior correctly.
    • Convert to BHP: Use this tool to translate surface tubing or casing pressure measurements into Bottom Hole Pressure (BHP) using fluid column gradients.
  2. Rate Normalized Pressure (RNP):
    • Perform RNP Analysis (P/q plots). This allows you to identify changes in well productivity over time, independent of rate fluctuations. It is essential for identifying reservoir boundary effects or completion damage.

Step 4: Correlations & Comparative Benchmarking

  1. Vaca Muerta & Industry Correlations: Apply specialized correlations to estimate reservoir properties (like Permeability or Skin) based on the production trends observed in your selection.
  2. Benchmarking with Compare: Use the Compare tool to evaluate your current group against another group. This side-by-side view allows you to identify technical differences or performance gaps.

Step 5: Advanced Visualization & Results

  1. Miscellaneous Display Tools:
    • Show/Hide Plot: Clean up your charts by toggling Oil, Gas, Water, and Pressure streams.
    • Time Series Display: Switch between Daily Rate (to see volatility) and Cumulative (to see total recovery) views.
    • Well Data Modal: Click on any well point in a chart to open the Well Data modal for an instant look at that well’s technical specs.
  2. Analysis Control:
    • Statistics: Review aggregate metrics such as EUR (Estimated Ultimate Recovery) and IP.
    • Results Table: View calculated parameters in a grid format. This data can be exported to CSV for integration with external reporting tools.
  3. Reporting: Use the Screenshot tool to capture images of your diagnostic plots.