July-20-2022 - Wednesday Daily Update - Mohammad Elkady

 

Daily Update - Mohammad Elkady - (July-20-2022)

1.  What did I do today?

I have been learning how to use CMOST to do sensitivity analysis to use in the history matching.

2.  What did I find interesting/Work on? 

Steps to sensitivity analysis

• File > New > Project and select your .dat file as base dataset
• New Study > define your .dat file as your base dataset and select Sensitivity Analysis as your task type.
• In general Properties, Import your FHF files
• Fundamental data defines the plots you want to view from your simulation file (Go for Original time Series)
• Insert your plots (water and oil rates, etc.)
• In parameterization, select the variables you want to adjust.
• Hard Constraints
• Prevent unnecessary simulations when a specific constraint is violated.
• Pre-Simulation commands
• Define one or more command to modify the dataset before submit it to scheduler.
• Creating Master Dataset
• Parameterization > parameters> click on cEdit search for the adjusting parameters keywords and right click and create parameters
• Then save and close the cEdit file, and click import
• Select min and max range for each parameters, normal parameters (porosity, permeability) is continuous real, parameters like frac spacing is discrete real and you add the numbers. Parameters like rock type is discrete text.
• Under pre simulation commands > insert > run builder silently
• Objective functions determine which results CMOST should analyze
• Basic Simulation results type is preferred over history match quality for sensitivity analysis.
• Insert your simulation results as cumulative production of oil and water
• For the BHP, you have to specify specific dates (From Characteristic Date Times) as data points because BHP values are not continuous.
• Then add these dates back in the Basic Simulation results.
• Control Center defines how to run the simulations and allows you to start and stop the CMOST engine
• In the simulation settings page, make sure that the scheduler Local is active and set Max Concurrent jobs to 4
• You can also specify the Max Run Time per Job in hours.
• Then run the simulation from the control center main page

·       The simulation took so long so I left it to run overnight.

3.  What will I do next? 

I have selected initial parameters to be used as CMOST parameters, Next I will try to test more parameters to see the most effective ones that affects the history Matching.