Results Skill

This skill provides tools for reading and analyzing simulation binary output files.

Overview

The Results skill enables agents to:

• Read time-series summary data from simulation outputs
• Extract static grid properties from initialization files
• Run flow diagnostics (time-of-flight, tracer concentrations, allocation factors, F-Phi plots, Lorenz coefficient)
• Access binary simulation results programmatically

Tools

read_simulation_summary

Reads time-series data from simulation summary files (.UNSMRY / .SMSPEC).

Usage:

read_simulation_summary(
    case_path: str,
    variables: List[str],
    entities: Optional[List[str]] = None
) -> str

Parameters:

• case_path: Path to the .DATA file (tool finds corresponding .SMSPEC file)
• variables: Summary variables to extract (e.g., "FOPR", "FOPT", "WBHP")
• entities: Optional well/group names to filter results (e.g., "PROD1", "INJ1")

Example:

read_simulation_summary(
    case_path="SPE1CASE1.DATA",
    variables=["FOPR", "FOPT"],
    entities=["PROD1"]
)

Returns: Summary data with time range, timesteps, and variable values.

When to use:

• When user asks for specific summary metrics (TOOL_DECISION_TREE.md Section 2.6, LLM choice)
• For extracting time-series data for analysis
• When comparing numerical results between cases

read_grid_properties

Reads static grid properties from initialization files (.INIT / .EGRID).

Usage:

read_grid_properties(
    case_path: str,
    properties: List[str]
) -> str

Parameters:

• case_path: Path to the .DATA file (tool finds corresponding .INIT or .EGRID file)
• properties: Properties to extract (e.g., "PORO", "PERMX", "PERMY")

Example:

read_grid_properties(
    case_path="SPE1CASE1.DATA",
    properties=["PORO", "PERMX"]
)

Returns: Grid dimensions, property statistics (min, max, mean), and property arrays.

When to use:

• When user asks for grid property information (Section 2.6, LLM choice)
• For analyzing reservoir characteristics
• When validating grid setup

Note: Spatial visualization (grid structure, permeability, porosity, pore volume, pressure, saturation, etc.) is not in the tool catalog; the agent suggests using a GUI (e.g. ResInsight) for those (Section 2.0).

run_flow_diagnostics

Runs flow diagnostics on simulation results using pyflowdiagnostics. Computes time-of-flight (TOF), tracer concentrations, flow allocation factors, F-Phi (flow-storage capacity) curves, and Lorenz coefficients.

Usage:

run_flow_diagnostics(
    case_path: str,
    time_step_ids: Optional[List[int]] = None,
) -> str

Parameters:

• case_path: Path to the .DATA file (simulation must have been run with RPTRST FLOWS)
• time_step_ids: Report step IDs to analyze (e.g. 1, 2, 3). Default: last report step from SMSPEC

Requirement: Simulation must include flux output in RPTRST:

RPTRST
BASIC=2 FLOWS PRESSURE ALLPROPS /

Output: Creates {case_stem}.fdout/ directory with JSON, CSV, Excel, and GRDECL files.

When to use:

• When user asks for flow diagnostics, time-of-flight, tracer, allocation, F-Phi, Lorenz coefficient
• To analyze injector-producer connectivity and sweep efficiency
• For post-processing of simulation results (see MRST Flow Diagnostics)

Workflow Integration

This skill integrates with the Simulator Agent's decision tree (TOOL_DECISION_TREE.md):

1. Results Analysis (Section 2.6):

   read_simulation_summary (via LLM choice)
   read_grid_properties (via LLM choice)
   run_flow_diagnostics (via LLM choice)
   

2. After Simulation (Section 3.3):

   run_and_heal → summarize → optionally use results tools for detailed analysis
   

Implementation Details

Tools are implemented as LangChain tools with Pydantic input schemas. The skill uses:

• EclReader: Apache-2.0 reader for summary (.SMSPEC/.UNSMRY) and grid (.INIT/.EGRID) files
• File resolution: Automatically finds .SMSPEC, .INIT, .EGRID files from .DATA path
• Time axis handling: Supports both date-based and step-based time axes
• Well filtering: Filters results by well/group names when provided

Error Handling

All tools return descriptive error messages if:

• Case files are not found
• Required output files (.SMSPEC, .INIT) are missing
• Requested variables or properties are not available
• Binary file reading fails

File Resolution

Tools automatically resolve output file paths from the DATA file path:

• CASE.DATA → CASE.SMSPEC (summary)
• CASE.DATA → CASE.INIT or CASE.EGRID (grid properties)
• Paths are resolved relative to the DATA file directory

Limitations

• Grid structure: Grid dimensions, geometry, and EGRID are not in the tool catalog; use GUI tools (e.g., ResInsight)
• Spatial visualization: Grid, permeability, porosity, pore volume, pressure, saturation, and other spatial fields are not in the tool catalog; use GUI tools
• Time-series plotting: Use plot_summary_metric for visualization instead of raw data extraction

References

• Tool Decision Tree - Routing logic
• OPM Results Tools README - Detailed tool documentation