Cementing
Super Seal II Float Shoe Nose Options
Float Shoe Designs Born from Cementing Expertise
In addition to a variety of standard, down-jet, and double
valve float shoes, Halliburton can provide several other float
shoe configurations that can enhance the placement of
casing and cement around the shoe joint and can reduce
drillout time after cementing.
Super Seal II HPUJ Float Shoe
One of these special float shoe configurations is the Super
Seal II high-port up-jet (HPUJ) float shoe. The Super Seal II
HPUJ float shoe can be combined with a composite tapered
nose, providing an unbeatable combination for tight or
highly deviated wellbores.
In addition, this combination provides the following
benefits:
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High-port up-jets to jet the formation and wash past
ledges or other wellbore restrictions.
Composite nose for PDC drillability.
Certification by Lloyds Register to meet API RP10F
Category III-C.
Figure 1Super Seal II HPUJ float shoe.
The HPUJ float shoe jets the formation face, removing
detrimental mud cake and cuttings and increasing the
chances of a successful cement-to-formation bond.
Approximately 40% of the fluid pumped through the
equipment is discharged at a high velocity through the
bottom of the float shoe, removing material in its path and
helping maneuver the casing past ledges and tight sections
of the wellbore.
If the casing string is reciprocated during cementing, cement
jetted through the exit ports removes mud cake from the
formation face. Field reports indicate that the HPUJ float
shoe can substantially reduce the number of casing strings
that require secondary squeeze cementing operations. All
casing sizes of the Super Seal II HPUJ float shoe offer an
autofill strap on the Super Seal II float equipment valve.
When engaged, this strap allows the casing to fill in the hole,
saving time and reducing the ram effect of running casing.
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Six up-jet and four down-jet ports are placed tangential to
the OD of the float shoe to jet the circulation fluid or
cement upward, enhancing fluid turbulence far above the
floating equipment. This turbulence can effectively remove
filter cake from the wellbore, returning the wellbore almost
to its original state before cementing. In addition, the fluid is
distributed in a circular motion in the annular space above
and below the float shoe, helping prevent channeling near
the shoe and aiding with hole cleaning.
Figure 2Super Seal II HPUJ float shoe with composite tapered nose.
Super Seal II HPUJ float shoes can be manufactured with a
variety of nose configurations that help ensure casing is run
successfully past the most severe ledges or obstructions. Any
nose configuration can be manufactured to match casing
size, weight, grade, and thread. The composite tapered nose
helps the casing move past previous sidetracks in the
wellbore, helping ensure that casing gets to bottom on the
first attempt. Use of composite material can decrease
drillout time substantially when used with PDC fixed cutter
drill bits, and composite noses as large as 20 in. can be
supplied. Additionally, pumping through the noses can
HALLIBURTON
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Figure 3Tapered nose (aluminum or composite) can enable casing to be
run through severe wellbore doglegs without damage to the Super Seal II
valves or casing.
Figure 4Offset tapered nose (aluminum or composite) can enable casing
to be run through the most severe wellbore doglegs without damage to
Super Seal II valves or casing.
remove debris sometimes encountered in the wellbore or
help circulate the casing string past tight sections of
the wellbore.
The Super Seal II HPUJ float shoe with composite nose is
the result of continued improvement in tapered nose shoe
designs. It improves on the aluminum version, which had
questionable PDC drillability and aluminum cuttings that
could cause problems on surface with re-injection pumps.
Tapered Nose Options
Enclosed Down-Jet Float Shoe
Figure 5Tapered nose configurations can enable casing to be run past
severe doglegs and washouts successfully. Casing rotation along with an
offset tapered nose further improves the ability to successfully run casing
through washed out build sections.
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The enclosed down-jet float shoe is designed to be used in
severe wellbore applications. This nose configuration is
designed to protect the float shoe valve from damage as
casing is run in hole.
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Several other nose options for Super Seal II float shoes are
popular. When the tapered nose option is used, casing can
be run past ledges or obstructions in the wellbore, as well as
through severe wellbore doglegs without being damaged and
without damaging Super Seal II valves. These noses are
available in tapered and offset tapered configurations that
are ideal for running casing through milled windows for
multilateral operations.
Figure 6Enclosed down-jet float shoe for severe wellbore applications.
Case Histories
Customer A: 13 3/8-in. Casing
The customer wanted the casing run under four conditions:
1. Reach bottom with casing under difficult well conditions with dangerous ledges.
2. Drill out the shoe track with a PDC bit.
3. Prevent down time with the cutting re-injection pump.
4. Cause no associated problems with aluminum debris in the hole.
The customer had been running an aluminum tapered nose high-port up-jet float shoe on previous wells. However, some
aluminum pieces interfered with the cuttings re-injection system on drillout. Halliburtons initial composite tapered nose
design was for a forthcoming extended reach well that had not yet been drilled. A test version was used on a well in which
aluminum cuttings had caused a delay in the cuttings re-injection system. The casing was cemented in place with no
difficulty. During the drilling out phase, the composite shoe caused no problems.
After the successful test, the composite nose HPUJ float shoe was used in the extended reach well. The 13 3/8-in. casing
was run to an angle of 65 and the 9 5/8- in. casing to 90. The shoe was run and successfully drilled out in 5 minutes with
a PDC bit. No problems with the cuttings re-injection system occurred.
Savings to operator compared to previous wells:
Pull casing: 24 hours +
Drillout time 2 hours +
Bit change: 24 hours +
Cutting re-injection: 10 hours +
Estimated initial net gain from process
= $68,250
Customer B: 13 3/8-in. Casing
The customer wanted the casing run under three conditions:
1. Reach bottom with casing under difficult well conditions with dangerous ledges.
2. Drill out the shoe track with a PDC bit.
3. Cause no associated problems with aluminum debris in the hole.
Halliburton offered a composite nosed high-port up-jet shoe, which the customer ran on 13 3/8-in. casing. The shoe was
run and successfully drilled out with a PDC bit in 10 minutes with no subsequent additional casing run and no drillout
problems. The nose thread had been Howco welded. The customer was very happy with the performance of this shoe.
Savings to operator compared to previous wells:
Drillout time 2 hours +
Bit change: 24 hours +
Estimated initial net gain from process
= $48,166
Customer C: 9 5/8-in. Casing
The customer was concerned that the casing could not be run to bottom in the 12,762-ft deep well without hanging up the
shoe on a formation ledge. The customer had problems on previous wells in this development and wanted to be positive
the casing would run without any lost time.
Halliburton supplied a composite tapered nose HPUJ float shoe. This composite tapered nose shoe was designed to enable
the casing to bypass ledges and reach bottom in difficult wells. Halliburton ran the casing to bottom without problems,
drilled out the shoe with a PDC bit, and prevented potential lost time from pulling the casing.
Savings to operator compared to previous wells:
Pull Casing: 24 hours +
Estimated initial net gain from process
= $45,400
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H03729 10/06
2006 Halliburton
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contained in the contract between Halliburton and
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