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CONTENTS
Introduction
Removable packer
Aplications
Benefits
Operations
Design
Example
Limitations and Enhacements
Video
Conclusion
Bibliography
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INTRODUCTION
Packers
The packer forms the basis of the cased-hole completion
design.
Sealing device that isolates and contains
produced fluids and pressures within thewellbore to protect the
casing and otherformations above or below the producingzone.
This is essential to the basic functioning ofmost wells.
Retrievable sealbore packer (left) a
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INTRODUCTION
Permanent
The permanent set offers simplicity,requiring few moving
parts.
Hostile environments
Permits a larger internal diameter
Retrievable
Offers the most flexibility
Potential economy in caremoval is anticipated in the
The removable packer waprolific reservoirs that diameter
tubulars for production
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REMOVABLE PACKER
Aplications
The removable packer was defor prolific reservoirs that emply
diameter tubulars for hihg-voproduction.
The packer will function as eiproduction packer or an
isopacker.
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REMOVABLE PACKER
Benefits
o Save rig time
o Reliability
o Flexibility
o Removability
One-trip, flanged up, no tubing man
Simple robust design with no inmechanism to complicate the
desig
Head configurable for tubing conneseals, anchored seals, or no
seals
On production stringa) Thru-tubing chemical cutb) Thru-tubing
mechanical cutc) Straight-pull shear release (low se
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REMOVABLE PACKER
Operations
Running
Removal
The removable packer was desset as with traditional hydraulic
s
1. removal on the completion tubing chemical or mechanical c
2. removal on the workstring umilling tool.
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REMOVABLE PACKER
Design
Performance
Removability
The removable packer concept retrievable components taken from
botand hydraulic set packers.
The cut-to-remove concept is based that the cross-section of the
packesimilar to that of the production tubing
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REMOVABLE PACKER
Design
validation
1) Equipment Validation: Lab Tests
2) Operations Validation: Stack-up Tests
3) Application Validation: CaseHistories. The first two
installations withremovable packers were in the remoteareas of
northern Alaska
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REMOVABLE PACKER
Example#1
The Milne Point F-86 well was drilled and compwith a removable
packer, sliding sleeve aninstallation to allow formation fracturing
of KuparThe jet pump was placed after the frac trecompleted and the
well was proproduced and te
This case history validated the benefit of haing mmethods of
removing the packer.
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Example #2
The dual porpuse of this triple-packer coto selectively capture
two seawater inje
the Kuparuk C-sands apart and isolate perforations above the
injection target zo
REMOVABLE PACKER
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REMOVABLE PACKER
Limitations
1) Metallurgy - limited experience in cutting hCRA tubulars.
2) Restricted ID completions - limited to workstrinand
thru-tubing mechanical cutting removal optio
3) Thru-tubing cutters - only as good as the meacutting zone of
the packer mandrel.
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REMOVABLE PACKER
Enhacements
Cutting technology for high-graderesistant alloys
Through tubing release methods
Commercialization/standardization
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VIDEO
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CONCLUSION
Resolve the dilemma when deciding between retrievable and
permanent large
Removable packers offer value in high-profile monobore wells, in
remoenvironments, deepwater or subsea wells.
Validated by
performance testing in the laboratory
system testing at a rig
application testing in the field.
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BIBLIOGRAPHY
Petrowiki.org packers.
