Integrated Analysis
& Optimization Tool

CMOST employs innovative experimental design, sampling and optimization techniques to efficiently determine reservoir and operating parameters defining recovery and production of oil and gas fields.

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Improve efficiency & productivity with automated/optimized workflows
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Sensitivity Analysis: Assess Different Parameters
Confidently identify and assess the relationship between reservoir parameters /objective functions and how they impact the history match, production forecasts and overall recovery.

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  • Assess the sensitivity of different parameters and their relative effect on a user defined objective function (e.g. HM error, NPV etc.)
  • Investigate the effect that changes in input parameter values have on output
  • Conduct indepth analysis with: Response Surface methodology, Morris and Sobol variance-based or One parameter at a time (OPAAT)
  • Reduce simulation time by selectively determining which parameters can be eliminated during HM
  • Analysis tools: histograms, cross-plots, time-series plots, scatter-plots, proxy model validation plots, and tornado plots

Optimization: Improve Operational and Completion Strategies
Modern experimental design and optimization algorithms vary dozens to hundreds of parameters simultaneously to find the optimal solution.

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  • Easily define reservoir, well and operating variables for design and field development planning
  • Define custom user defined optimization objective function
  • Use an advanced calculation engine: CMG DECE, PSO, DE, Latin Hypercube plus proxy, or random brute force methods
  • Identify an optimum (global optima) development plan or operating conditions with the least number of simulation runs
  • Optimize well and fracture spacing to increase production, NPV and EUR
  • Histograms, cross-plots, time-series plots, scatter-plots, proxy model validation plots, and tornado plots for advanced analysis
  • Applications may include:
    • Increase recovery and reduce chemical costs by optimizing chemical injection scheme and slug sizes in cEOR process
    • Optimize well and hydraulic fracture spacing to increase production, NPV and EUR in unconventional reservoirs
    • Develop and optimize completion design and operational strategies to increase ultimate recovery and reduce steam-oil ratio (SOR) from SAGD operations

Uncertainty Analysis: Manage Risk and Identify Opportunities
Quantify and understand the impact reservoir and operational uncertainties will have on project economics, thereby managing risk and identifying opportunities.

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  • Quickly run thousands of cases to assess HM variability or field optimization and the associated probabilities
  • Quantify uncertainty to manage risk and identify opportunities
  • Apply powerful statistical methods: Monte Carlo Simulation using Proxy, Monte Carlo using reservoir simulator, Probabilistic Forecast using posterior samples
  • Develop a response surface (RS) for each objective function of interest, with respect to each of the uncertain variables, using simulation results
  • Assess prediction reliability to understand the range and flexibility of potential operating constraints
  • Assess the viability of operational strategies by determining how results vary with uncertainty
Assisted History Matching: Calibrate Models with Field Data
Assisted History Matching (HM) involves adjusting the simulation model properties to accurately reproduce past reservoir behavior and to simulate future behavior with increased confidence.

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  • Automate the history matching process by using advanced statistical methods
  • Advanced calculation engines: CMG DECE, CMG Bayesian Engine, Particle swarm optimization (PSO), Differential Evolution (DE), Latin Hypercube plus proxy, or Random brute force methods
  • Calibrate and history match models with field production and injection data, including temperature logs and 4D seismic
  • Guide and speed-up history matching by applying Uncertainty in measured data and user defined weighting factors to parameters
  • Create and assemble the best matches, in the least amount of runs, using advanced Experimental Design (ED) techniques
  • Easily analyze the reservoir and recovery processes with assisted HM

Robust Optimization: Use Geological Uncertainty to Reduce Risk
Account for multiple geological realizations, or other uncertain parameters, to identify the optimum results for a field development plan.

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  • Rigorously analyze geological uncertainty, using multiple geological realizations, to create a risk-weighted optimization solution for a field development plan
  • Innovative workflow for better informed decisions, leading to a higher probability of success and profitability
  • Increase production and achieve a reservoir's full economic value by implementing the best recovery method
  • Use advanced analytics and graphical output to accurately predict probability of reservoir success with reduced risk

Probabilistic Forecasting: Drive Informed Field Development Decisions
Forecast using a range of possible outcomes to quantify risk and confidently make business decisions using CMG's Proxy Based Acceptance-Rejection (PAR) sampling method.

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  • Capture uncertainties in forecasts while honouring the observed production data
  • Significantly reduce computational costs and achieve a 10x speed-up in simulation runs using CMG PAR over the MCMC method
  • CMG's PAR defines posterior probability density function by using "misfit" simulation results and measured production data
  • Improve the accuracy of the RBF proxy model in regions of good history matches
  • Use multiple history matched models to generate P10, P50 and P90 forecasts during field application