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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
Outline
•Technology Basics
•Application Description
•Installation Summary
•Results
•Lessons Learned
•Q & A
3
Expansion Basics
F or
P x Area
m
sy
OD post
sy ID post
4
The Expansion Process
Dimensional change: I.D. - 4.892” to 6.409”/ O.D. - 5.500” to 7.006”
5
Expandable Zonal Isolation
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
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
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
Gas
Rat
e M
CF/
Mo
nth
Well #1 Well #3 Well #4
SET system recompletion
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
Gas
Rat
e M
CF/
Mo
nth
Well #1
SET system recompletion
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
Ga
s r
ate
Mscf/
mo
nth
SET system recompletion
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
Questions?
