Brett W. Williams Regional Cementing Technical Advisor ... Williams.pdf · Brett W. Williams...
Transcript of Brett W. Williams Regional Cementing Technical Advisor ... Williams.pdf · Brett W. Williams...
Wellbore Isolation and Quality Evaluation Brett W. Williams
Regional Cementing Technical Advisor
Halliburton
© 2016 Halliburton. All Rights Reserved.
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
Determining Isolation Needs
Historical reference Sound engineering practices
Computer simulations and modeling
“Belt and suspenders”
Wellbore Isolation and Quality Evaluation • B. Williams
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
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