tuned ® spacer vi spacer fluid
DESCRIPTION
Tuned ® Spacer VI Spacer Fluid . SUBHEAD, 12PT ARIAL BOLD Title. Preparing the Wellbore to Receive Cement. Tuned ® Spacer VI System Optimal m ud removal system Economically enables spacer fluid volume to b e i ncreased Helps improve d isplacement efficiency. - PowerPoint PPT PresentationTRANSCRIPT
2 © 2012 HALLIBURTON. ALL RIGHTS RESERVED.
Preparing the Wellbore to Receive Cement
Tuned® Spacer VI System Optimal mud removal system Economically enables spacer
fluid volume to be increased Helps improve displacement
efficiency
3 © 2012 HALLIBURTON. ALL RIGHTS RESERVED.
Tuned® Spacer VI Spacer Fluid – Benefits
Replaces water-based mud for displacing oil-based drilling fluid (OBM)– Enhances surface recovery of OBM
Increased spacer fluid volume helps improves wellbore cleanout and thus cement bonding
Fluid stability helps eliminate /reduce settling in horizontal wells
Rheological properties can be adjusted to optimize fluid train– Plastic viscosity (PV) – Yield point (YP)
Can reduce or eliminate use of surfactant package
4 © 2012 HALLIBURTON. ALL RIGHTS RESERVED.
Tuned® Spacer VI Spacer Fluid – Features
Density ranges from 8.15 lbm/gal to 14.0 lbm/gal
Superior suspension properties increases fluid stability– Helps mitigate solids settling
of cuttings – Helps mitigate bridging off
across thief zones – Avoids filtrate loss to the
producing zones or fresh water aquifers
Maintains constant hydrostatic pressure
5 © 2012 HALLIBURTON. ALL RIGHTS RESERVED.
Tuned® Spacer VI Spacer Fluid – From the Field
Challenge: Achieve zonal isolation throughout the wellbore, from shoe to surface
– Improve bond logs over wells previously cemented in the field
– Avoid using WBM to mitigate casing failures due to corrosion
Solution: – Replace WBM with Tuned Spacer VI fluid– Utilize the settable properties of the spacer
for a hydraulic seal above the top of cement to the surface
– 50 bbl of Tuned® Spacer III spacer fluid, 418 bbls of Tuned Spacer VI fluid followed by the lead cement slurry, cap and foam cement
Results: – Achieved full returns of Tuned Spacer VI fluid
to surface and plug bumped– Bond logs indicated superior cement-sheath
isolation and bonding above top of cement from Tuned Spacer VI fluid
– Procedure has been adopted and successful in subsequent wells in the same field
6 © 2012 HALLIBURTON. ALL RIGHTS RESERVED.
Tuned® Spacer VI Spacer Fluid – From the Field
Challenge: Cost Management – Optimize recovery of OBM– Decrease remediation costs incurred
in similar offset wells (cement sheath de-bonding during completion operations)
Solution: Extend contact time of spacer for enhanced wellbore cleaning
– 151 bbls Tuned Spacer VI fluid immediately preceding 445 total bbls of primary cement
Results: – Significantly improved CBL– No remediation required after
completion operations– CBLs showed complete coverage
above top of cement due to cementitious set of remaining Tuned Spacer VI fluid
CBL above TOC shows solid set and bonding of remaining Tuned Spacer VI fluid
CBL of offset wellshow annular seal
Requiring remediation.
CBL of well in whichTuned Spacer IV fluid was run
shows excellent bonding.
7 © 2012 HALLIBURTON. ALL RIGHTS RESERVED.
Tuned® Spacer VI Spacer Fluid – Summary
Provides cost efficiencies– Increased spacer volume– Can replace WBM and optimize wellbore cleaning– Improved OBM recovery
Adjust density and rheology Cementitious properties helps improve hydraulic seal Fluid stability
8 © 2012 HALLIBURTON. ALL RIGHTS RESERVED.
Who to Contact, Where to get more information
NameTitle
Phone: 123-456-7890Fax: 123-456-7890Cell: 123-456-7890
www.halliburton.com