Publication Date: 2015-Oct-14
The IP.com Prior Art Database
Various processes taking place while drilling oil gas wells have been studied over the years For many of them mathematical and empirical models were created that can reproduce the process with some degree of accuracy Among them models for drillstring BHA dynamics hydraulical thermal geomechanical bit rock interaction etc In most cases these models are used independently to investigate specific processes
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Various processes taking place while drilling oil & gas wells have been studied over the years. For many of them mathematical and empirical models were created that can reproduce the process with some degree of accuracy. Among them models for drillstring/BHA dynamics, hydraulical, thermal, geomechanical, bit-rock interaction, etc. In most cases these models are used independently to investigate specific processes.
Performing drilling operations various tools are used to collect information about the drilling conditions and formation being drilled. One can create a direct model ("virtual sensor") for each of these tools to simulate its response under given conditions.
Coupling drilling process models with the "virtual sensor" models one can build a "virtual rig" simulator. Such simulator, given required input data (geology, BHA/drillstring, bit, mud, etc.), will be able to create time based "drilling" data as if a regular drilling operations were performed: SLS logs, FE logs, etc.
Such simulator can be used for:
1. Planning a. to optimize selection/design of BHA, bit, mud, optimal drilling parameters.
b. to create a baseline (expected) response for planned drilling operation.
c. for optimal selection of tools with appropriate life time expectancy (Each tool has a finite life expectancy. Part of it can be "used" during previous operations. Having multiple tools with different "remaining life" one can perform simulations with "virtual rig" to estimate ne...