Meana Petro
DR-06FundacionalOla 2DominioIA

Torque, Arrastre e Hidráulica en Tiempo Real

En una frase

Compares what the string should weigh and how hard the pumps should work against what is actually measured, and flags the gap.

El problema

Torque-and-drag modelling is usually done in the office, once, on planned geometry. The rig then drills a hole that is not the planned geometry.

Without a live comparison, a friction factor drifting from 0.25 to 0.40 over a section goes unnoticed until the string will not run to bottom.

Cómo funciona

A soft-string model with an optional stiff-string correction is run continuously against the surveyed trajectory, back-calculating the friction factor from every pick-up, slack-off and rotate-off-bottom measurement. Hydraulics runs the same way: predicted standpipe pressure and ECD versus measured, with the residual attributed to cuttings load, bit nozzle wear or a washout.

Everything is physics-based and auditable. There is no learned component in the core calculation, which is why it is classed foundational.

Datos necesarios

  • Directional surveys as drilled
  • String and BHA tally with dimensions and weights
  • Hookload and torque with a reliable zero reference
  • Mud rheology, flow rate, standpipe pressure, bit nozzle configuration

Qué obtiene

  • Live friction factor trend by section, with drilling, tripping and rotating cases separated
  • Broomstick plot updated per survey and a torque limit projection to section TD
  • ECD profile and equivalent static density along the annulus

Qué no puede hacer

Soft-string modelling underestimates torque in high-dogleg and in stiff-BHA cases; the stiff-string correction narrows but does not close that gap. Surface torque measurement quality on older top drives is often poor enough to dominate the error budget, and we calibrate against the rig’s own instrument before quoting any accuracy.

Cada página de capacidad declara una limitación real. Si un proveedor no puede decirle dónde termina su producto, no le están diciendo la verdad sobre dónde empieza.

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