At Chinook, the large majority of our geosteering geologists are former wellsite geologists, intimately familiar with all rig operations and comfortable with the constant communication and flow of information needed for this type of work.

Focusing on multiple aspects of the drilling process, our geosteering geologists provide:

  • Continuous supervision of drilling operations
  • Continuous assessment of the stratigraphic location of the drill bit in real time
  • Correlation of drilling, MWD/LWD and mud gas parameters throughout the wellbore and against offsetting wells profiles
  • Use of offset well information to optimally land the build section, utilizing TVD logs with cross plot of offset data
  • Continuous monitoring and critical evaluation of the wellpath inclination and azimuth in relation to stratigraphic markers and porosity windows
  • Continuous communication with directional driller to make proactive wellpath adjustments ensuring wellbore placement remains within the acceptable stratigraphic window
  • Proactive evaluation of wellpath position in relation to existing and planned wellbores
  • Reservoir navigation
 
 

Reservoir Navigation

Our geosteering geologists have experience navigating reservoirs based on MWD/LWD parameters, gas ratios and proximity data (ranging). Navigating the reservoir is most often done by correlating MWD or LWD curves recorded over the lateral section with log profiles from control wells (stratigraphic wells or pilot holes). By overlaying curves on a TVD scale, geosteering geologists pinpoint the location of the drill bit in the structure, and can point the wellbore to the desired target within the reservoir with extreme accuracy.

Geosteering approaches

Successful geosteering is done when the data used is streamed in real time, supervision is continuous while drilling, and a specialised software is used for precise interpretation.

Geosteering approaches can vary:

 

  • Remote Geosteering
    • In geosteering rooms set up at operators premises
    • In Chinook’s operations room

Remote Geosteering

  • On-site Geosteering
    • Performed in conjunction with wellsite geology or mudlogging

Onsite Geosteering

  • Combinations and variations
    • Custom solutions can be tailored based on client and project specifics