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SPE REFRAC Enventure Banff Canada

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SPE REFRAC Enventure Banff Canada

  1. 1. Utilizing Expandables for Effective Zonal Isolation in Long Horizontal Refracs Tight Reservoir Completions: Technology Applications and Best Practices Banff, Alberta Canada. May 3-5, 2011 David Mayhall
  2. 2. 2 Outline •Technology Basics •Application Description •Installation Summary •Results •Lessons Learned •Q & A
  3. 3. 3 Expansion Basics F or P x Area m sy OD post sy ID post
  4. 4. 4 The Expansion Process Dimensional change: I.D. - 4.892” to 6.409”/ O.D. - 5.500” to 7.006”
  5. 5. 5 Expandable Zonal Isolation
  6. 6. 6 9 5/8 Surface 5 ½ Liner Typical Initial Barnett well progam 8 stage perf cluster layout Application Description Smaller Casing Strings Less Cuttings Less Cement Less Drilling Fluids Less environmental impact
  7. 7. 7 Refrac Liner Installations Summary • 3 wells – 3000’ – 3500’ (Barnett) •1 well – 4000’+ (Marcellus) •20 plus re-frac zones/well •4 ¼” x 5 ½” (17# -20#) •Plug and perf •6500 psi frac pressures (average) •Maximized 4.210”(17#) or 4.115 I.D. (20#) •Flush through bore for additional re-frac or zonal shutoff
  8. 8. 8 Well 1 recompleted using SET technology. 4 1/4" x 5 1/2" system Comparison with wells 3 &4 (traditional completion) 100 1,000 10,000 100,000 10/10/06 1/18/07 4/28/07 8/6/07 11/14/07 2/22/08 6/1/08 9/9/08 12/18/08 3/28/09 7/6/09 10/14/09 1/22/10 5/2/10 8/10/10 11/18/10 2/26/11 Time GasRateMCF/Month Well #1 Well #3 Well #4 SET system recompletion
  9. 9. Well 1 recompleted using SET technology. 4 1/4" x 5 1/2" system 100 1,000 10,000 100,000 10/10/06 1/18/07 4/28/07 8/6/07 11/14/07 2/22/08 6/1/08 9/9/08 12/18/08 3/28/09 7/6/09 10/14/09 1/22/10 5/2/10 8/10/10 11/18/10 2/26/11 Time GasRateMCF/Month Well #1 SET system recompletion
  10. 10. 10 Well B recompleted using SET technology. 4 1/4" x 5 1/2" system 100 1,000 10,000 100,000 3/9/07 9/25/07 4/12/08 10/29/08 5/17/09 12/3/09 6/21/10 1/7/11 Time GasrateMscf/month SET system recompletion
  11. 11. 11 Lessons Learned •Pre-planning & coordination •Candidate Screening essential •Clean-out run •Friction Reducers •Place TOL in build section – Re-entry guide •Expansion contingencies effective
  12. 12. 12 Questions?

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