Schlumberger

Case Study: Cimarex Energy Co. Saves Six Days of Rig Time in Permian Basin

Operator sets company records for fastest curve and lateral ever drilled

Challenge: Kick off from pilot hole cement plug and drill curve and lateral in reservoir known to induce high levels of shock and vibration.

Solution:

  • Drill to TD with PowerDrive Archer vorteX motorized high build rate rotary steerable system (RSS).
  • Optimize bit selection with IDEAS integrated design platform from Smith Bits, a Schlumberger company.
  • Model optimal drilling fluid with VIRTUAL HYDRAULICS software from
    M-I SWACO, a Schlumberger company.
  • POLY-PLUS RD acrylic copolymer to water-base mud to provide cuttings encapsulation and shale stabilization.
  • Use shale shaker from M-I SWACO for exceptional solids removal.

Result:

  • Saved six days of rig time.
  • Set Cimarex records for fastest curve (1,544 ft/d) and lateral (1,956 ft/d) sections drilled.
  • Eliminated a dedicated kick-off assembly and time drilling.

Establish new procedures to reduce drilling time 

Cimarex Energy Co. wanted to reduce drilling time while kicking off a pilot hole and drilling a curve and lateral in West Texas. Historically, Cimarex has used three separate assemblies in three runs to kick off from the plug, complete the curve and drill to TD. The operator required a specially designed BHA to meet the demands of drilling in an area of the Permian basin known to induce shock and vibration.

Use high build rate RSS to drill to TD in one run 

The PowerDrive Archer vorteX motorized high build rate RSS was selected to perform the sidetrack and drill the well to TD faster and eliminate time associated with multiple trips and slide drilling. This system is a true hybrid of push- and point-the-bit technology that delivers high-dogleg severities up to 18°/100 ft. It also enables the system to perform fast, reliable openhole sidetracks in any direction.

Schlumberger supplied directional drilling services and worked with Smith Bits to optimize the SHARC high-abrasion-resistance PDC drill bit using IDEAS integrated design platform. Using 4D, time-based simulations, the IDEAS platform models the cutting interface in real time, eliminating costly trial-and-error field tests. To reduce shock and vibration, Schlumberger and M-I SWACO collaborated to determine optimum fluid characteristics using VIRTUAL HYDRAULICS software.

Saved six days by drilling record curve and lateral in single run 

Using an engineered BHA design including PowerDrive Archer vorteX RSS and SHARC PDC drill bit, Cimarex drilled the well with one BHA, resulting in a time savings of six days. The separation off of the cement plug was gained at 80 ft/h, eliminating time-drilling intervals while rotating. The curve and lateral sections were completed in one run and Cimarex set two company records for drilling speed—the curve at 1,544 ft/d and the lateral at1,956 ft/d.

While drilling, the operation encountered higher-than-expected shock and vibration. Predictive modeling from i-DRILL engineered drilling system design eliminated the drillstring as the cause. VIRTUAL HYDRAULICS software was then used and determined the fluid had caused the heavy shock and vibration. Schlumberger experts worked closely with engineers from M-I SWACO to evaluate and model the appropriate fluid. Once the shock and vibration were reduced, the PowerDrive Archer vorteX RSS performed to specifications. Cimarex plans to use this time-saving system when drilling future wells in the Permian basin.


Download: Cimarex Energy Co. Saves Six Days of Rig Time in Permian Basin (0.11 MB PDF)

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