Drillbit Geomechanics™

Fracture ID is recognized as an industry leader in the rapidly advancing field of Drillbit Geomechanics™

  • A 3 component (3C), high frequency accelerometer is deployed in the BHA while drilling
  • Each cutter head on the PDC bit deforms the rock in a manner comparable to an earthquake
  • Earthquake seismology is applied to convert 3C accelerations into 3C Stress/Strain
  • These Stress/Strain Relations provide high resolution, in situ rock properties along the well:
    • Young's Modulus
    •  Bedding Presence
    • Poisson's Ratio
    • Fracture Intensity

Bakken Case Study with Continental Resources

There is a lot of science and hard work that has gone into (and continues to go into) transforming acceleration data into rock mechanics.  

To the right please find a link to a SPWLA published case study performed in conjunction with Continental resources in the Bakken.  This paper provides a comprehensive background on Fracture ID’s technological application.

Technical Validation Against Traditional Methods:

Operators often want to be able to directly compare emerging technologies with those they have deployed in the past.  Below three comparison result are presented:

Core Comparison

in the Eagle Ford

Coring is a fantastic opportunity to recover the actual reservoir rock to the surface for analysis. Some business impacting core measurements include porosity & permeability. Collecting Drillbit Geomechanics while coring allows for in situ rock mechanical measurements to be recorded so that these high value core measurements can be better mapped onto future vertical & lateral wells. In this example Fracture ID’s measurements are overlain on the core pictures. They show tracking of the lithological make up & showcase Drillbit Geomechanics™ high resolution capabilities.

Sonic Dipole Comparison

in the Midland Basin

Below is an example from the Midland Basin where both FID (black) and dipole sonic (blue) data were collected.  The left is the entire well, while the middle is a zoomed in section (Lower Sprayberry) and the right is that same section with a 4 ft smoothing filter applied.  As the sonic tool surveys a larger section of rock the smoothed Fracture ID results compare best when smoothed to its resolution. But keep in mind that the Fracture ID results have more information available at native resolution.

Image Log Comparison

in the Bakken

Image logs are some of the highest resolution tools available and using the actual mechanicals along the well to better interpret these logs is very powerful.  In this example the Young’s modulus is overlain. This helps to discern the lithologies that make up the different rock types being intercepted by the well.