Paradigm Sysdrill Torque & Drag analysis system is used to validate well designs and prevent loss of rig time by eliminating drilling string failure. Drilling engineers can use the system to model all types of BHAs, e.g., drilling assemblies, casing strings, sand screens, and completion strings.
Soft and stiff string analysis options allow calculation of all the forces acting upon the BHA including torque, drag, stresses and side forces. The calculated loads are compared to string yield limits and rig operating limits and the results presented using a “traffic light” approach for fast identification of specific issues. Detailed graphical and tabular results provide a comprehensive description of the modeled scenario. Multiple user defined operating modes can be incorporated in a single calculation, allowing the entire drilling process to be modeled for a given hole section.
Users can incorporate axial and torsional friction factor reduction to model the latest torque-reducing drilling tools. Using well data from previously drilled wells, the drilling engineer can reverse calculate friction factors, facilitating realistic analysis of future wells.
By including hydraulic effects, users can model the additional viscous forces and include pressure differences in the stress calculations. Mutliple fluids may be defined to allow modeling of floated or partially filled casings strings.
The range calculation automatically performs a full analysis at varying depths and provides a summary of surface results. Hook load and surface torque readings gained from the rigsite may be entered and displayed in range graphs. This allows direct comparison of modeled loads with those observed while drilling.
A packer calculation allows modeling of casing liner/hanger setting conditions and provides the maximum set down weight.
The stuck pipe calculator is used to accurately predict the stuck point depth while drilling based on measured surface torque and twist or surface over pull and stretch, and considers hole inclination.
Paradigm Sysdrill BHA String Constructor™
With the Paradigm Sysdrill BHA String Constructor, users can quickly construct complex BHAs by rapidly filtering extensive catalogs of drilling equipment, including bits, collars, pressure loss devices, centralizers, stabilizers, torque reduction subs, and accessories. These BHAs can be stored in catalogs for future use, and new catalogs can be added. A customizable graphical view combines mechanical properties and physical dimensions.
Paradigm Sysdrill Critical Rotary Speed Analysis™
Paradigm Sysdrill Rotary Critical Speed Analysis is used to predict rotational speeds at which resonance may develop. The analysis considers axial, lateral and torsional vibration modes and highlights rotary speeds to avoid while drilling in order to prevent excessive string damage.