Refracturing Unlocks Stranded Hydrocarbon in Older Wellbores

  • Early shale wells were completed with significantly lower fracture intensity than modern day completion designs.
  • Lower sand volumes and fewer frac stages resulted in sub-optimal completion designs by today’s standards.
  • Long spacing between perforation clusters and frac stages left significant hydrocarbon volumes behind pipe. Refracturing provides a cost-effective way to unlock stranded pay.
  • Refracturing of existing perforation clusters optimizes initial stimulation and increases sand and fluid volumes to current industry standards.
  • Perforating between old stages connects previously untreated rock to the wellbore. Pin-point refracturing effectively fractures new rock from an old wellbore.

Focused Refracturing Through Pin-Pointed Treatments Provides Optimal Solution

To contact and reconnect to an already treated reservoir the refracturing design must focus maximum energy in a known, limited perforation location. Current refracturing attempts lack precision and focus of energy. High rate “Pump and Pray” techniques tend to only stimulate the zones near the heel of the wellbore and have low success rates as reported by O&G operators. Pin-pointed refracturing treatments yield significantly better results, providing 100% product placement control in every portion of the wellbore.

Optimizing Refracturing Design

  • Limit length of each interval to be treated for maximum energy focus during refracturing treatment. Single cluster focus yield optimal results.
  • Mechanical isolation of each individual perforation cluster for maximum treatment efficiency.
  • Add new perforations between old stages if large distance of unperforated wellbore exits.
  • Pump refracturing treatment at same rate per cluster as initial stimulation.
  • Significant hydrocarbon volumes unlocked through pin-pointed refracturing treatments.

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