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MultistageCompletionSystemsfor
HydraulicFracturing
WhyareMultistageCompletionsRequired
•Fractureswillgrowtothepathofleastresistance
•Drillingstresses
•Drillingdamage
•Frictionlosses
•Formationweakness
TreatmentgoestopathLittleornotreatment
ofleastresistance
©2017UnconventionalOilandGasTraining.Allrightsreserved.
TheReservoirisnotHomogeneous
•Rocksaredepositedingeologic
settings–propertiesarerarely
constantforverylong
•Asawellboreispressurized,the
tloweststrengthsectionswill
f
0fracturefirst
5
1•Thiscaneasilyconcentrate
fracturesalongalimitedportion
ofthewellbore
ModifiedfromSPEcourse,MultistageCompletions,Fracturing,andRefracturinginShales(SergeyKotov)
RoleofHeterogeneity
Littleornotreatment
Treatmentgoestopath
ofleastresistance
CompletionsOverview
PNP
BACS
CTACS
Plug-and-Perf(PNP)
Plug-and-Perf(PNP)
Plug-and-Perf(PNP)
FracPlug
WirelinePerfGuns
SettingTool
Plug-and-Perf(PNP)
Plug-and-Perf(PNP)
Plug-and-Perf(PNP)
OpenholePlug-and-Perf(PNP)
Stage6Stage5Stage
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