4D History Matching & Closed-Loop Model Update

When evidence disagrees with the model, update the model.

SeiSyn combines production, pressure, wells, tracers and seismic evidence through DDFS + ES-MDA to update the dynamic reservoir model.

Why it matters

How should the reservoir model change to better explain the evidence?

Closing the loop turns model mismatch into traceable evidence for calibration rather than leaving observed and predicted behaviour in separate workflows.

  1. 01Observed Evidence + Model Prediction
  2. 02Joint Misfit
  3. 03DDFS + ES-MDA
  4. 04Posterior Ensemble
  5. 05Updated Dynamic Model
  6. 06Reservoir Decision

Real product evidence

Closed-Loop Simulator-to-Seismic Workflow: pressure-only, saturation-only and combined scenarios pass through the petro-elastic model and simulator-to-seismic workflow; predicted 4D is compared like-for-like with observed 4D, and the joint misfit, together with production, pressure, wells and tracers, drives DDFS and ES-MDA to update the dynamic model at the target vintage.

Inputs

  • Production and injection
  • Pressure
  • Wells and tracers
  • Observed seismic evidence
  • Model predictions

Outputs

  • Joint misfit
  • Posterior ensemble
  • Updated dynamic model
  • Decision context

Interpretation context

SeiSyn integrates model-update evidence and workflows; it does not position itself as a universal replacement for a full commercial reservoir flow simulator.

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