The Isolizer™ centralizer - Halliburton

badwaterreflectiveUrban and Civil

Nov 29, 2013 (3 years and 6 months ago)

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Isolizer™ Centralizer

SUBHEAD, 12PT ARIAL BOLD

Title

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© 2012 HALLIBURTON. ALL RIGHTS RESERVED.

Isolizer™ Centralizer


Applications: Lean Profile Drilling


Deep water well construction


Tight
-
tolerance sections


Under
-
reamed holes


Alternative
solution for
centralizer
subs


Slip
-
on carbon
-
steel bow spring centralizer


Powerful restoring force


Integral composite
-
resin
-
blend stop collars


Bonded directly to the casing


E
xtremely high adhesion values

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© 2012 HALLIBURTON. ALL RIGHTS RESERVED.

Isolizer™ Centralizer


Benefits over Conventional
Centralizer Subs


Casing
String Placement flexibility


Limitless placement position (not
limited to placement between
joints)


Ideal for CRA
tubulars


Designed for Delivery


Slip
-
on design eliminates need for
casing grade
-

or thread
-
specific
matches


Enhances Safety


Up to 50% fewer casing connections
made on rig floor vs. conventional
centralizer subs


Configuration
reduces casing stand
length over conventional
centralizer
subs

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© 2012 HALLIBURTON. ALL RIGHTS RESERVED.

Isolizer™ Centralizer


Benefits


Powerful restoring force reinstates casing standoff once
the Isolizer centralizer has
passed through
restricted
section


Standoff helps enable


More
efficient mud

displacement


More
reliable

cement placement


Low
starting force enhances rig
-
time
efficiency

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© 2012 HALLIBURTON. ALL RIGHTS RESERVED.

Isolizer™ Centralizer


Available Models


Rotating
model


stop collars can be placed inside or
outside the end rings


Pull
-
in model


Pull
-
through model


Pull
-
through model

Pull
-
in model

Rotating model

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© 2012 HALLIBURTON. ALL RIGHTS RESERVED.

Isolizer™ Centralizer


Stop Collar Installation


Versatile installation
locations


Extremely high adherence
directly to casing


Trained
installation crew

Halliburton Facility

Customer’s Locations

Casing Pipe Yard

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© 2012 HALLIBURTON. ALL RIGHTS RESERVED.

Isolizer™ Centralizer


Stop Collar Adhesion Process

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© 2012 HALLIBURTON. ALL RIGHTS RESERVED.

Isolizer™ Centralizer


Proprietary Stop Collar Design


Windows in the
end
rings


Composite
-
resin
-
blend
blades
are adhered to the casing
through the windows


Secures the Isolizer centralizer to
the casing


Allowance between composite
-
resin
-
blend blades and window
allows
for the compression of
the bow
springs


Pulls the centralizer, reducing
starting and running
forces


Especially beneficial for tight
tolerance
sections

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© 2012 HALLIBURTON. ALL RIGHTS RESERVED.

Isolizer™ Centralizer


Stop Collar Advantages


Provides
the maximum holding
force


Helps alleviate risk
of the centralizers
slipping


Allows
bow springs to collapse fully
through tight
restrictions


Stop collar for the rotating model can
be placed inside the end rings


Allows
centralizers to be pulled
in
either
direction, thus reducing the starting and
running
forces


Conventionally, stop collars push the
centralizer, requiring higher starting and
running forces


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© 2012 HALLIBURTON. ALL RIGHTS RESERVED.

Isolizer™ Centralizer


Features


Optimized placement of centralizer modeled with

iCem
®
Service, the most advanced predictive
analysis
and modeling
service


Determines standoff for the most efficient mud
displacement and
complete cement coverage


Centralizer
bow springs and stop collars can be custom
designed to meet unique well parameters


Composite
-
resin
-
blend stop collars are
inert and help
mitigate
corrosion



Can be used in high temperature environments above

350
°
F (177
°
C)


Can be installed on any grade of casing including CRA
alloys

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© 2012 HALLIBURTON. ALL RIGHTS RESERVED.

Isolizer™ Centralizer


From the Field


Challenge
: Ultra
-
deep water well remotely located


Conventional centralizer sub supplier gave merely a 30
-
day notice of
being unable to meet delivery schedule due to manufacturing delays


Longest
and heaviest string of 16
-
inch intermediate liner run
by this
operator in the Gulf of Mexico


T
ight
spots
observed
while tripping the drill string prior to running the
casing causing concern for landing casing to depth with centralizers
installed


Solution
: Isolizer Centralizers


Pre
-
installed in customers tubing yard prior to deploying


Results


Schedule met / zero NPT


High hook loads
indicated the
full weight of the casing string
was
being
imparted to the rig
equipment and there were no
drag
forces

created by
the centralizers even in tight sections


Casing run directly to bottom without circulating


Centralizers delivered higher performance than in such conditions than
any previously documented by this operator


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© 2012 HALLIBURTON. ALL RIGHTS RESERVED.

Isolizer™
Centralizer


Summary


Alternative solution for centralizer subs


Suitable for lean profile drilling applications


Casing string placement flexibility


Low starting force


Powerful restoring force


Rotating, pull
-
in and pull
-
through models


Proprietary stop collar design