Brett W. Williams Regional Cementing Technical Advisor ... Williams.pdf · Brett W. Williams...
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Wellbore Isolation and Quality Evaluation Brett W. Williams
Regional Cementing Technical Advisor
Halliburton
© 2016 Halliburton. All Rights Reserved.
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Methods of Wellbore Isolation
Pumpable Fluids Portland cement based Resin/epoxy based Reduced/non-Portland Composite (Portland/resin)
Reactive/expandable elastomers
Annular packers
Expandable tubular
Wellbore Isolation and Quality Evaluation • B. Williams
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Determining Isolation Needs
Historical reference Sound engineering practices
Computer simulations and modeling
“Belt and suspenders”
Wellbore Isolation and Quality Evaluation • B. Williams
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Evaluating Placement of Isolation
Design procedure followed Best practices used Post-job analysis Pumping or tool setting Pressure matching Mechanical testing
Electronic evaluation
Wellbore Isolation and Quality Evaluation • B. Williams
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Determining if Isolation is Sufficient
Case by case All parameters must be reviewed
How much “insurance” is necessary?
Sound engineering and design practices
Wellbore Isolation and Quality Evaluation • B. Williams
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