Centek’s simulation package combines verified physical product data with detailed, well-specific information to create a realistic model of how the casing, liner or tubing is expected to perform downhole.

The software uses three-dimensional modelling and minimum-curvature calculations to represent the well trajectory between survey points more accurately.

It also incorporates:

• Buoyancy calculations that account for changes in tubular diameter, fluid properties and depth, providing a more representative calculation of effective string weight and hookload.
• The capstan effect through doglegs, modelling the additional friction and changes in tension created as the string remains in contact with the wellbore through changes in direction.
• Three-dimensional loading, enabling the software to assess normal forces, side loads and casing deflection along the actual wellpath.
• Physically tested centralizer data, including starting force, running force and restoring force, so recommendations are based on measured product performance.

Using this information, Centek can model stand-off, hookload, torque and drag, running forces and centralizer placement. Different products, quantities and spacing programs can then be compared to help balance the ability to reach TD with the stand-off required for effective cement placement.

The quality of the input data is also critical. Centek therefore uses the latest available well survey, tubular and hole dimensions, fluid data, friction factors and planned running conditions when preparing each simulation.

By combining advanced wellpath mathematics, verified product data, accurate customer inputs and comparison with field results, Centek provides evidence-based recommendations tailored to the conditions of each well.