Energy Products
10
20
Internal Glass Reinforced Epoxy (GRE) Liner Systems for
Oilfield Tubulars
DUOLINE 20 is the workhorse of the DUOLINE liner systems offering
a broader range of application coverage in terms of more demanding
downhole chemistry, durability and temperature requirements. Developed
by Rice Engineering in 1971, it employs a durable filament wound glass
reinforced epoxy (GRE) liner sleeve and offers a proven track record in a
range of demanding environments with temperatures up to 121˚C (250˚F).
Primary Application
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Water injection wells
Water disposal wells
Industrial wastewater disposal
ESP water source wells
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CO2 injection wells
Sour gas production wells
Carbon capture storage wells
Gas lifted Oil Production
Limitations: DUOLINE 20 is not recommended for rod-pumped wells.
Benefits
Proven Operating Performance
• Close to 50 years of proven field
performance
• 100 million feet of DUOLINE
installed worldwide
• Tested and qualified by major
exploration and production companies
• ‘Liner of Choice’ in demanding
injection service
Exceptional Long Life
• D ocumented in-service installations
lasting over 35 years
• L asts up to 3 times longer than
coatings
Durability – Extends Life
• Durable and abrasion resistant in
wireline and coiled tubing service
• Reliable corrosion protection in
wells with high levels of CO2, H2S &
chlorides
Availability
or used tubing can be lined
in days rather than in the months
required for coating
• Inventory available for immediate
delivery
• New
Cost Effective
• Used tubing can be utilized to reduce
initial investment cost
• No specialized tubing or coupling
systems are required
• Lowest overall life cycle costs.
Reduce operational, maintenance
and downtime expenses for repairing
or replacing damaged or failed
equipment associated with short
lasting corrosion prevention systems
Unmatched Performance in Eliminating Corrosion in Production,
Injection and Disposal Applications
Duoline 20 | Features and Benefits
DUOLINE 20 vs Internal Plastic Coating (IPC)
DUOLINE Features
DUOLINE Benefits
Disadvantages of IPC
Impact Resistant
Highly resistant to thru-tubing
wireline & coiled tubing
intervention work.
IPC is highly susceptible to
damage from wireline & coiled
tubing. Resulting coating damage
leads to accelerated corrosion in
connection areas.
Long product life
due to durability
Better long term well
economics, ie: saves money.
Advertised limited product life of
less than 10 years.
Documented in service
installations for over 35 years.
Resistant to damage
from gas penetration of
H2S & CO2
Superior corrosion protection
IPC easily penetrated by gas.
in demanding service because
gas molecules trapped between Susceptible to recharge of Oxygen
in acid-forming reaction.
steel & liner surface have no
long term effect.
Corrosive reaction repeats with
recharge of O2 as fluids circulate.
Reaction not subject to O2
recharge due to dead cell
Reaction sets up coating
effect.
cracking & disbondment and
further corrosion.
High hoop strength
modulus liner which
does not rely on adhesive
or chemical bond to
steel pipe
iberglass reinforced liner
F
not susceptible to collapse
or disbondment upon
depressurization of tubing
string in gaseous service.
IPC will flake off upon
penetration by and subsequent
expansion of trapped molecules.
Similar effects observed in less
rigid plastic liners.
teel becomes the load
S
bearing member, thus system
bears the yield limit of the
steel in bending, tension &
compression loading.
IPC has tendency to flake off in
areas of high stress and forms
holiday surface where corrosion
can form.
Duoline 20 | Features and Benefits
contininued
DUOLINE 20 vs Other Liner Systems
DUOLINE Features
DUOLINE Benefits
Disadvantages of Other Liner Systems
High hoop strength
Fiberglass reinforced
liner is not susceptible
to decompression issues
in gas (or partial gas)
installations.
HDPE & PVC liner systems are
highly susceptible to collapse
in gas service, and in water
injection service with high partial
pressures of CO2 and H2S.
Used extensively in very
demanding applications
requiring high strength
and high performance gas
tight premium threaded
connection designs
Provides user flexibility in
selecting both the correct
liner for the service and
choice of API or premium
connections. Poly (PVC, HDPE) linings offer
limited service capability in
low end applications (shallow
water injection with low partial
pressures of gas).
Offers broader chemical
resistance
Offers greater service and
application flexibility.
Poly linings typically offer more
limited chemical resistance.
DUOLINE 20 vs CRA (Corrosion Resistant Alloy) materials
DUOLINE Features
DUOLINE Benefits
Disadvantages of CRA Materials
Readily available and has
very short manufacturing
lead time
Readily available and does
not place demanding
constraints on the design
team for spec & order time.
Not stock items and sometimes
have 6 to 12 months lead times.
Composed of a
non-corrosive liner
Never affected by constantly
replenished sources of
Hydrogen Sulfide, Carbon
Dioxide, Oxygen, Acids, Acid
gas and/or mineral salts.
CRA based materials internal
surface is fully and continuously
exposed to the well-bore fluids
& gases.
Installed into
relatively low-cost
carbon steel pipe
Initial CAPEX outlay is
minimized.
Chrome & CRA have higher up
front CAPEX investment costs.
arbon steel with DUOLINE
C
has much less propensity
for galling during running
operations.
hrome & CRA have higher
C
inherent handling costs with
special equipment requirements
(slips, elevators, dies).
uch less onerous handling
M
issues with internally lined
carbon steel pipe (no special
slips, dies, elevators, etc).
hrome & CRA have higher
C
inherent risk of handling &
galling damage.
FLARE
ID
LINER
ID
Fiberglass Liner Sleeves
Cross Section
20 - General Guidelines
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Drift diameter general rule: Maximum tool diameter should be 6.35 mm (0.25 inch) smaller than
flare diameter.
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Recommended Wireline Speed: 30 m/min (100 ft/min) in and out, and tools/wireline/cables shall
be free from sharp corners or burns.
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Do not allow tools or bars to “free-fall” through DUOLINE and do not perforate through DUOLINE
or liner damage will be expected.
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Recommended Pressure Release Rates: In Gas Service: 100 psi/min (700 kpa/min) In Water
Service: Use a 5 - 10 second release.
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Absolute Roughness: 5 micron or 0.00021 inches, or use C = 150 for Hazen Williams friction loss
formula.
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General Chemical Resistance: HCI Acid = YES, HF Acid = NO, Strong Caustics = NO,
Hydrocarbons, Produced Oil & Water = YES
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Nominal Working Temperature: DUOLINE 20 = 121oC (250oF)
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Note: Working temperature ratings should be adjusted by RICE for significant levels of H2S, CO2,
solvents, caustics or acids.
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Ratings for Working Pressure/Tension/Compression/Bending: Up to rated steel pipe body limits.
Do not exceed elastic limits.
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DUOLINE is not necessarily fragile, but following the recommendations contained within Rice
Engineering & Operating Ltd.’s BEST PRACTICE GUIDELINES FOR DUOLINE TUBULAR GOODS
will significantly extend they useful life of your tubing investment.
For more information call us toll free 1.888.742.3364
or visit us on the web www.riceeng.com