PROTECH CRB

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PROTECH CRB and PROTECH DRB

• Composite Systems

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Centralizer blades moulded to the pipe

• Casing
• Tubing
• Deepwater production risers
• Specialty applications for drilling
• Expandable Liners

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CRB Rigid Centralizer
BCH Integral Bow Spring Centralizer
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Halliburtons CRB CentralizersThe Field Proven
and Cost Effective Replacement for Centralizer
Subs

• Very high adhesion values to substrate
• Impact resistant
• Overall toughness
• Flexibility
• Versatile any geometry any location
• Less expensive than centralizer subs
• Innovative

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Twenty-nine operators have deployed Protech
technology. Most applications are in Deepwater
Wells
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Deepwater Slim Hole Sidetracks Utilize the
CRB Centralizer

• Platform A -- 12 units
• Platform B -- 51 units
• Platform C -- 270 units
• Platform D -- 85 units
• Platform E -- 82 units
• Platform F -- 90 units

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Developed for Close Tolerance Situations
The following close tolerance applications have
been deployed by eight major operators

1. 11 ¾ x 13 5/8
2. 11 7/8 x 13 5/8
3. 7 ¾ x 8 ½
4. 7 ¾ x 8 ½
5. 5 ½ x 6 ¼
6. 5 ½ x 6 ¼
7. 7 5/8 x 8 ½
8. 5 ½ x 6 1/2
9. 7 5/8x 8 1/2
10. 7 5/8 x 8 ½
11. 7.00 x 8 ½
12. 7 5/8 x 8 ½
13. 22 x 26
14. 16 x 17 1/2
15. 11 7/8 x 12 1/4

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Application QC
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CRB centralizers are installed in Houston at the
pipe yard
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Installed molds that are ready to be filled
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Finished CRB blade just after mold removal
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The inspection process after application is
monitored by Halliburton QA/QC Manager and
records are made for each centralizer.
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Shore D Hardness Inspection
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CRB centralizers prepped for shipment
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Shear Test
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CRB blades in place with friction plates
installed and torque applied
Hydraulic test unit at Stress Eng.
Removing friction plate after test
Friction plate with serrations
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Grooves cut into CRB by Friction Plate
CRB Blades after 180,000 pull
CRB Blades after 180,000 pull
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Abrasion Resistance Field Test
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(Germany) Wear Test in Open Hole
Total Wear was .4mm (.016)
Before test
After test
Original Height 11.8mm (.464) Final
Height 11.4mm (.448) Test
Parameters Hole Depth 4912 m (16,115) RIH /
POH time 10.5 hrs Rotation on bottom
4.5hrs_at_ 30 RPMs
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Adhesion to C276
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Adhesion Test with Protechs CRB Composite Bonded
to C276 Hastelloy
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Toughness and Durability Testing by Halliburton
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Long view of test fixture
CRB centralizer (yellow)
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Wear after 4 hrs 45 minutes of load and rotation
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Halliburton Sperry-Sun RD Testing Work Order
012200000 Rev.1
Discussion This test was conducted to find out if
the composite material would stand up in a cased
hole rotational environment. Critical parameters
of the testing --Buckled condition of the
tubular, the buttons experienced a constant 1119
lb compressive load under rotation of 120 rpm.
--G forces recorded during the test had average
G forces of 10 to 15 Gs with spikes over 20 Gs
consistently. --The total number of estimated
revolutions and impacts per test piece is
34200. Conclusion This test was designed as a
destructive test. We were not able to either
destroy nor disbond the material in a non
advancing rotational environment. We will now
precede with a new test in an attempt shear the
buttons from the tubular in a rotational and
axial advancing environment.
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Test Number 2 of 3 April 2, 2003 Michael Kuhlman,
Engineer
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The BHA was run at 120 RPM for 10 minutes. The
assembly was run out, examined and photographed.
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The test assembly was then configured with the
stabilizer lugs running up the ramp of the
deflector. The bottom hole end of the stroke
left ½ of clearance between the bearing housing
and the stop on the deflector. The stroke was
54 and cycle time was approximately 5 minutes.
This was stroked 10 times running at 120 RPM.
The lugs were inspected and photographs were
taken with each stroke. The wear on this test
was primarily observed on the downhole lugs. Due
to the angle of the ramp, they were the ones in
contact with the ramp. The ramp has milling
marks from previous use leaving a rough surface.
The cumulative wear is shown in the following
pictures. At the beginning of this test the lugs
were ¼ under the 5 gage ring. After testing
the lugs were 3/8 under the gage ring,
indicating 1/8 of OD wear. The portions of the
lugs which were worn at an angle were up to ¼
below the OD of the lug
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Halliburton Sperry Sun MillRite Qualification
Test Test Number 3 of 3 April 22, 2003 Michael
Kuhlman, Engineer
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CRB centralizer blades after the first two tests
and just prior to beginning the third test
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CRB Centralizers after milling operation
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Metal shaving were left inside of casing during
milling operation but did not effect CRB
centralizers.
Mill after cutting operation
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Flexibility in Design
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Spiral blades that were run in a sidetrack on a
deepwater platform -- 7 5/8 casing x 9 5/8
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Hastelloy C276 for VK 251
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Sidetrack Test 5 13Cr liner x 5.795 2 long
spiral blades 4 per joint on 90 joints
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Deflector ring on either side of Vam Top Coupling
for BP Thunder Horse
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Standoff () vs. Measured Depth
7.625 x 40 spacing
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Standoff () vs. Measured Depth
7.625 x 20 spacing
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Standoff () vs. Measured Depth
5.00 x 40 spacing
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Standoff () vs. Measured Depth
5.00 x 20 spacing
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A well typical of those being drilled today
The geometry of the well bore will create the
situation where the pipe will want to ride on the
hole wall. In order to eliminate potential
differential sticking two centralizers per joint
are required. Casing deflection is the primary
cause of concern in this well bore. Two
centralizers per joint will minimize the
deflection problem.
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CRB Centralizers Molded to Slotted Liner
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Second Slotted Liner Job performed in Aberdeen
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GOM -- Project -- Green Canyon
Designed to Prevent Differential Sticking
7 3/4 Casing x 8 ½ for 3 wells with approx
5000 in each well centralized with this design
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Torque Drag Reduction
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Permanent DRB Protectors In Cased Hole

• Avg rpms 135140
• Hours drilling 261
• Hours reaming, washing 128
• BHT 270 F
• WOB 10-30k lbs.
• Drilling rates 15-30 ft/hr
• Hole angle 35 degs

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Prototype of DRB wear band to prevent drilling
riser wear
6 5/8 DP with 9.5 OD
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Selected Applications That DemonstrateToughness
and Durability
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Sidetrack Drilled 200with 5.5 13Cr liner
The liner was run but not cemented when the rig
was evacuated for Hurricane Katrina. When
operations resumed 10 days later the pipe was
free and circulation was immediately established.
An excellent cement job was achieved proving
that the Protech C shaped centralizer blades
kept the pipe off the hole wall and did not
impede circulation.
Used in conjunction with Versa Flex Liner Hanger
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Tough and Durable
Cuttings Bed Cleaner for Horizontal Well in
Austin Chalk

• From vertical to 92 in 200
• Blade OD 4.50 Hole 4.75
• Horizontal length 1977
• 45 hours drilling horizontal

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Cuttings Bed Cleaner
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After 45 hours and 2700 open hole
These tools were run just above the bit. The rig
supervisor reported that 5 separate horizontal
sections were drilled with these pads before they
wore away
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DRB centralizer on Sperry-Sun milling tool after
a milling operation in Saudi Arabia
95 rpms with8k on bit for 5-6 hours
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CRB Centralizer After Retrieval from Well
Liner Hanger set while going in the hole
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Integral Bow Spring forUnder Reamed Holes
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Integral Bow Spring Centralizers
Halliburton CRB Centralizer with stops molded on
the outside

• Installed on Casing
• No Connections
• Lower Cost
• Fast Delivery

Davis-Lynch Special Clearance Bow Spring
Centralizer
Close Tolerance Bow Spring Centralizer
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Traditional Centralizer Sub
BCH Integral Bow Centralizer for U/R Holes
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The Field Proven and Cost Effective Replacement
for Centralizer Subs