The Best Material For Downhole Capillary Tube: Duplex 2205 vs. Stainless Steel 316L
June 29, 2023 No Comments
We put Duplex 2205 and Stainless Steel 316L head-to-head to see which is best for
4mm Quadline
With all the benefits of our innovative 4mm design, this multi-conductor TEC provides the highest performance and reliability available on the market.
4mm Quadline – Downhole Instrumentation Cable
The GEO PSI 4mm quadline downhole instrumentation cable is designed to provide maximum strength and reliability, in an easy to handle form factor. This cold formed, tungsten-inert-gas welded cable meets UL2225 standards, and far exceeds the performance of outdated 1/4″ cable that is commonly found on the market.
High Crush Strength
Flexible
Light-Weight
4mm Quadline – Downhole Instrumentation Cable
The GEO PSI 4mm quadline downhole instrumentation cable is designed to provide maximum strength and reliability, in an easy to handle form factor. This cold formed, tungsten-inert-gas welded cable meets UL2225 standards, and far exceeds the performance of outdated 1/4″ cable that is commonly found on the market.
High Crush Strength
Flexible
Light-Weight
Real-Time Data Applications
- Permanent Downhole Monitoring
- Piezometers & Strain Gauges
- SAGD & Geothermal
- e-SlicklineTM
- Digital Slickline
- Hydrology
Maximum Ratings
Crush Force
(10,000 lbs)
The 4mm Quadline TEC is designed to maintain data integrity under a crush force of up to 10,000 lbs.
Temperature
(300°C)
The 4mm Qudaline TEC is designed to maintain data integrity within temperatures of up to 300°C (572°F).
Specifications
Ordering Information
Complete Your System
Specifications
Metal Jacket:
Material
Stainless Steel 316L or Incoloy 825
Most of the cables we ship are made of high quality Stainless Steel 316L. This material provides both great strength, and corrosion resistance. If however your particular well has an exceptionally hostile downhole environment, you may want to consider Incoloy 825. This metal jacket material provides extra protection against sulfuric and phosphoric acids, oxidizing acids, putting, stress corrosion cracking, inter-angular corrosion, and damage caused by high concentrations of downhole CO2.Â
Outside Diameter (1)
4mm / 0.160″
Wall Thickness
0.76mm / 0.030″
Seam
Gas Tungsten Arc Weld
Common in the aerospace industry, this method of welding reduces porosity and offers superior strength. While more difficult and time consuming, gas tungsten arc welding ensures the reliability needed to survive the most hostile downhole environments.
Weld Quality (2)
Eddy Inspection
This is a method of inspection in which electromagnetic fields are utilized to check the quality of the weld. By monitoring the resulting electrical conductivity and magnetic permeability of the cable, faults that would otherwise be invisible to the naked eye can be detected.
Insulation:
Material
PFA
Perfluoroalkoxy insulation provides exceptional performance at high-temperatures, and great mechanical strength which allows it to perform reliably in hostile downhole environments.
Max Operating Temperature (3)
300°C (572°F)
Diameter
2.413mm / 0.095″
Colour
White, Yellow, Green, Red
Conductor Core:
Tinned Copper
4 x 24 AWG (4) Stranded
Electrical:
Voltage Rating
500 V
Conductor DC Resistance
26.7 Ω/1,000 ft @ 20°C
7.874 Ω/100m @ 20°C
Armour DC Resistance
32 Ω/1,000 ft @ 20°C
18.373 Ω/100m @ 20°C
Capacitance (5)
- Single conductor to armor: 31.5 pF/ft
- Single conductor to opposite conductor: 13 pF/ft
- Single conductor to adjacent conductor: 16 pF/ft
- Pair to pair: 31 or 41 pF/ft (Depending on position)
- All conductors shorted together to armor: 77 pF/ft
Inductance (6)
- Loop with adjacent conductors pairs: 0.13 μH/ft
- Loop with opposite conductors pairs: 0.05 μH/ft
Mechanical:
Weight (Bare)
0.051 lbs/ft
Breaking Tension
SS 316L:Â 2,140 lbs
Incoloy 825: 1,900 lbs
Safe Operating Tension
SS 316L:Â 1,300 lbs
Incoloy 825:Â 1,140 lbs
Crush Rating
10,000 lbs
Encapsulation:
(Optional)
Material
Polypropylene(7)
Our round polypropylene encapsulation adds protection, while maximizing maneuverability. It does however reduce the maximum operating temperature from 200 °C to 150 °C.
Colour
Orange
Size
11mm (0.433″) x 11mm (0.433″)
Profile
Round(8)
Offering lower cost and far superior performance over square encapsulation, round is the profile of choice for our downhole cable encapsulation. To see a full list of benefits of round encapsulation click here.(1) Reference specification: ASTM A632; tolerance 0.1575″ – 0.1605″.
(2) Reference specification: ASTM E426
(3) Cannot exceed 300°C.
(4) American Wire Gauge.
(5) Measured with Hewlett Packard 4192A.
(6) For Stainless Steel 316L
(7) Polypropylene encapsulation lowers temperature rating from 200°C to 150°C.
(8) Square encapsulation is available upon request
Ordering Information
Material
Encapsulation
Product Number
Stainless Steel 316L:
Bare
100440
Encapsulated
102466
Incoloy 825:
Bare
102464
Encapsulated
102466
Complete Your System
Looking for the necessary components to build a complete fit for purpose system for your well?
Fill out this short questionnaire and one of our experienced team members will show you a solution designed to match the specific requirements of your well.
Visit this page on desktop to complete a brief questionnaire, or visit our contact page to get in touch with one of our experienced team members.
- Your email is safe with us.
Specifications
Metal Jacket:
Material
Stainless Steel 316L or Incoloy 825
Most of the cables we ship are made of high quality Stainless Steel 316L. This material provides both great strength, and corrosion resistance. If however your particular well has an exceptionally hostile downhole environment, you may want to consider Incoloy 825. This metal jacket material provides extra protection against sulfuric and phosphoric acids, oxidizing acids, putting, stress corrosion cracking, inter-angular corrosion, and damage caused by high concentrations of downhole CO2.Â
Outside Diameter (1)
4mm / 0.160″
Wall Thickness
0.76mm / 0.030″
Seam
Gas Tungsten Arc Weld
Common in the aerospace industry, this method of welding reduces porosity and offers superior strength. While more difficult and time consuming, gas tungsten arc welding ensures the reliability needed to survive the most hostile downhole environments.
Weld Quality (2)
Eddy Inspection
This is a method of inspection in which electromagnetic fields are utilized to check the quality of the weld. By monitoring the resulting electrical conductivity and magnetic permeability of the cable, faults that would otherwise be invisible to the naked eye can be detected.
Insulation:
Material
PFA
Perfluoroalkoxy insulation provides exceptional performance at high-temperatures, and great mechanical strength which allows it to perform reliably in hostile downhole environments.
Max Operating Temperature (3)
300°C (572°F)
Diameter
2.413mm / 0.095″
Colour
White, Yellow, Green, Red
Conductor Core:
Tinned Copper
4 x 24 AWG (4) Stranded
Electrical:
Voltage Rating
500 V
Conductor DC Resistance
26.7 Ω/1,000 ft @ 20°C
7.874 Ω/100m @ 20°C
Armour DC Resistance
32 Ω/1,000 ft @ 20°C
18.373 Ω/100m @ 20°C
Capacitance (5)
- Single conductor to armor: 31.5 pF/ft
- Single conductor to opposite conductor: 13 pF/ft
- Single conductor to adjacent conductor: 16 pF/ft
- Pair to pair: 31 or 41 pF/ft (Depending on position)
- All conductors shorted together to armor: 77 pF/ft
Inductance (6)
- Loop with adjacent conductors pairs: 0.13 μH/ft
- Loop with opposite conductors pairs: 0.05 μH/ft
Mechanical:
Weight (Bare)
0.051 lbs/ft
Breaking Tension
SS 316L:Â 2,140 lbs
Incoloy 825: 1,900 lbs
Safe Operating Tension
SS 316L:Â 1,300 lbs
Incoloy 825:Â 1,140 lbs
Crush Rating
10,000 lbs
Encapsulation:
(Optional)
Material
Polypropylene(7)
Our round polypropylene encapsulation adds protection, while maximizing maneuverability. It does however reduce the maximum operating temperature from 200 °C to 150 °C.
Colour
Orange
Size
11mm (0.433″) x 11mm (0.433″)
Profile
Round(8)
Offering lower cost and far superior performance over square encapsulation, round is the profile of choice for our downhole cable encapsulation. To see a full list of benefits of round encapsulation click here.(1) Reference specification: ASTM A632; tolerance 0.1575″ – 0.1605″.
(2) Reference specification: ASTM E426
(3) Cannot exceed 300°C.
(4) American Wire Gauge.
(5) Measured with Hewlett Packard 4192A.
(6) For Stainless Steel 316L
(7) Polypropylene encapsulation lowers temperature rating from 200°C to 150°C.
(8) Square encapsulation is available upon request
Ordering Information
Material
Encapsulation
Product Number
Stainless Steel 316L:
Bare
100440
Encapsulated
102466
Incoloy 825:
Bare
102464
Encapsulated
102466
Complete Your System
Looking for the necessary components to build a complete fit for purpose system for your well?
Fill out this short questionnaire and one of our experienced team members will show you a solution designed to match the specific requirements of your well.
Visit this page on desktop to complete a brief questionnaire, or visit our contact page to get in touch with one of our experienced team members.
- Your email is safe with us.
