The DigiSub
Eyes down hole without down hole sensors

Digisub

The DigiSub is the first of his kind, model based downhole data generator. 

The DigiSub delivers high frequency surface torque and speed and offers a validated physics-based model that provides information about the dynamic sub-surface behavior of the drill-string, both along the drill-string and at the bit, without the deployment of expensive downhole sensors. Both surface and downhole data are delivered synchronised and validated to the consumer.

Downhole information is invaluable when combined with the surface data to interpret the behavior of the various rig components.  For instance, severe drill-string oscillations exert tremendous stress on drill-string connections that could potentially cause a twist-off.

DigiSub data

  • True real time, aggregated, synchronised and validated 250 Hz Surface Signals and 25 Hz. downhole signals.
    • Top Drive rotary speed
    • Top Drive torque
    • Applied drill pipe Torque 
    • Drill bit Speed 
    • Dynamic drill bit torque
    • Drilling string speed on 150 points of the drillstring
    • Dynamic Drill string torque on 150 points of the drillstring 
    • Static drill string torque for Torque & Drag analyses
    • Realtime friction factor values. 

DigSub is the right tool for event prevention automation

Prevention of detrimental effects for drilling performance is on everybody’s priority list. Of great importance for the automation of corrective measures are:

  • Timely detection of the event occurring.
  • Context information about the root cause of the event.

High frequency data allows timely detection of anomalies while drilling

Rigs traditionally produce data once every 3-5 seconds.  At best, the Electronic Data Recorder (EDR) published data at 1 Hz.  Events such as drill-string stall, twist-off and certain aspects of stuck pipe develop and manifest themselves in a matter of seconds.  If data is not collected at a high enough sampling rate, then operational events leading up to a drill-string stall or a twist-off, cannot be detected in time to take corrective actions. 

The benefits of high frequency data are sometimes challenged but are obvious as shown in the examples you can download on this page.  The digisub delivers True real time, aggregated, synchronised and validated 250 Hz surface speed and torque signals.

Eys downhole without expensive downhole sensors delivers context information

The Banyan DigiSub is a powerful tool to visualize drill-string behavior without downhole sensors.

The DigiSub runs in real-time, a drill-string model fed with high frequency surface torque and speed information. This calculated data is synchronized with the measured surface speed and torque information.

This synchronised surface and downhole real-time information is unique for the O&G industry and delivers the context needed for AI systems to counteract detrimental drill string behaviour depending on the root cause of the event.

Imagen drilling with real time visualization of the drill bit behaviour. The driller can see immediately the drill bit reaction to changes in drilling parameters like WOB or surface speed.

Partners worldwide

Local support is important for us. That’s why we work with a global network of sales en service partners.

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