2018 | GEO Pressure Systems Inc.

Downhole Thermocouples

285°C Type K Thermocouples.

Type K Thermocouples are the most robust and reliable solution for temperature measurement in high-temperature reservoirs. When compared with fiber optic solutions, thermocouples are more cost-effective, and they do not suffer the effect of hydrogen darkening.

Products-Downhole-Thermocouples-Render-Thermocouple-GEO-PSI

A Breakthrough In Reliability

In 2010, we developed an exclusive manufacturing process that has greatly increased the reliability of thermocouples. We did this by eliminating many of the weak points of a traditional thermocouple system.  Our thermocouples offer superior performance for use in downhole steam-assisted gravity drainage (SAGD), enhanced oil recovery (EOR), geothermal, and other high-temperature applications.

Products-Downhole-Thermocouples-Breakthrough-Superior-Tensile-Strength-&-Crush-Rating-Icon-GEO-PSI

Superior Tensile & Crush Ratings

Utilizing the same innovative technology as our 4m TEC Cable, our thermocouple instrumentation lines offer superior performance. Our tensile operating strength is double that of MICA cable. And our crush resistance is more than 250% better than traditional MICA lines.

Products-Downhole-Thermocouples-Breakthrough-MICA-Free-Icon-GEO-PSI

MICA Free

By using a special form of perflouorokoxy (PFA) as insulation in place of MICA, we see several benefits. It provides a safe operating temperature of nearly 300°C/572°F. And the absence of MICA means that there is no longer the same threat of moisture wicking or corrosion that makes deployment and servicing so costly.

Products-Downhole-Thermocouples-Breakthrough-Splice-Free-Icon-GEO-PSI

Splice Free

Our thermocouple cables are made in continuous splice free lengths of up to 4,000m. This is in contrast to MICA cables which can usually only be made to a maximum of 250m before requiring a splice. With a traditional MICA cable these splices can result in damage which will cause it to provide false readings, or early failure. By minimizing splices with our PFA cable we are able to increase reliability and makes deployment and servicing much quicker, and more cost-effective.

Products-Downhole-Thermocouples-Render-Thermocouple-GEO-PSI

A Breakthrough In Reliability

In 2010, we developed an exclusive manufacturing process that has greatly increased the reliability of thermocouples. We did this by eliminating many of the weak points of a traditional thermocouple system.  Our thermocouples offer superior performance for use in downhole steam-assisted gravity drainage (SAGD), enhanced oil recovery (EOR), geothermal, and other high-temperature applications.

Products-Downhole-Thermocouples-Breakthrough-Superior-Tensile-Strength-&-Crush-Rating-Icon-GEO-PSI

Superior Tensile & Crush Ratings

Utilizing the same innovative technology as our 4m TEC Cable, our thermocouple instrumentation lines offer superior performance. Our tensile operating strength is double that of MICA cable. And our crush resistance is more than 250% better than traditional MICA lines.

Products-Downhole-Thermocouples-Breakthrough-MICA-Free-Icon-GEO-PSI

MICA Free

By using a special form of perflouorokoxy (PFA) as insulation in place of MICA, we see several benefits. It provides a safe operating temperature of nearly 300°C/572°F. And the absence of MICA means that there is no longer the same threat of moisture wicking or corrosion that makes deployment and servicing so costly.

Products-Downhole-Thermocouples-Breakthrough-Splice-Free-Icon-GEO-PSI

Splice Free

Our thermocouple cables are made in continuous splice free lengths of up to 4,000m. This is in contrast to MICA cables which can usually only be made to a maximum of 250m before requiring a splice. With a traditional MICA cable these splices can result in damage which will cause it to provide false readings, of early failure. By minimizing splices with our PFA cable we are able to increase reliability and makes deployment and servicing much quicker, and more cost-effective.

MICA vs. Perflouorokoxy (PFA) Insulation

MICA

MICA insulation offers excellent temperature ratings, however it is susceptible to moisture wicking and can be difficult to use. Excess humidity can lead to sensor failures, and MICA insulation is difficult to strip and make reliable terminations in the field. In addition, poor brazing technique or even bending of the armor of MICA cables cause attenuation, resulting in early failures or inaccurate/drifting temperature readings.

Perflouorokoxy (PFA)

GEO PSI thermocouple systems use a special form of perflourokoxy (PFA) as insulation. It has a safe operating temperature of nearly 300°C/572°F, and is much easier for crews to work with. No soft leads are required at the termination, making our solution quicker to deploy and more cost effective to service in the field.

Products-Downhole-Thermocouples-Labeled-Duplex-Thermocouple-GEO-PSI

Duplex Temperature Points

We are able to install a redundant thermocouple sensor at each measurement point. This is beneficial for data backup and results verification. Alternatively thermocouples can be spaced apart for distributed temperature measurement.

Pump Down/Pull Through System Advantage

Because our thermocouples are not externally attached, there is no change to the outside diameter of the instrumentation cable. This is convenient when deploying pump down bundles in coiled tubing deployments. We can fit more measurement points in smaller-diameter, coiled tubing strings.

Filler/Safe-Handling Section

Thermocouples are typically installed in bundles or attached to sheath membranes for pump down purposes. To avoid damage from handling or banding, we have developed a 1-2m safe handling section at the end of our instrumentation cable. This greatly reduces any wear or tear when pulling instrumentation bundles into coiled tubing.

Real-Time Data Applications

  • SAGD
  • EOR
  • Geo-Thermal
  • Coiled Tubing Deployed Instrumentation
  • Distributed Temperature Monitoring
  • Suspended Wellborne Bundle

Measurement

Products-Downhole-Gauges-Measurement-Temperature-Icon-Orange-GEO-PSI

Temperature (285°C)

GEO PSI Downhole Thermocouples are designed to accurately measure downhole temperature up to 285°C (545°F)

Measurement:

Temperature Range

-40°C to 285°C (300°C for short-term)

Temperature Accuracy

<± 2.2°C

Temperature Measurement Points

2 (Redundant or Spaced Apart)

Repeatability

<± 0.1°C (Depending on Logger)

Stability

Excellent

Resolution

Depends on Logger Input

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. 

Outside Diameter (1)

4mm / 0.160″

Wall Thickness

0.76mm / 0.030″

Seam

Gas Tungsten Arc Weld

Weld Quality (2)

Eddy Inspection

Insulation:

Material

Perflouorokoxy (PFA)

Diameter

2.413mm/0.095″

Long-Term Operating Temperature

285°C (545°F)

Short-Term Operating Temperature

300°C (572°F) (3)

Color

Red and Yellow

Core:

Alumel x2
Chromel x2

4x 24 AWG Stranded

Conductor DC Resistance Return Loop (Red + Yellow)

1,532 Ω/1,000 ft at 20°C

Armour DC Resistance

SS 316L: 22.5 Ω/1,000 ft
Incoloy 825: 32 Ω/1,000 ft

Operating Voltage

1 VDC

Mechanical:

Weight

0.051 lbs/ft

Breaking Tension

SS 316L:  2,140 lbs
Incoloy 825: 1,900 lbs

Safe Operating Tension

SS 316L:  1,300 lbs
Incoloy 825:  1,140 lbs

Crush Rating (4)

10,000 lbs

(1) Reference specification: ASTM A632; tolerance 0.1575″ – 0.1605″.
(2) Reference specifcation: ASTM E426
(3) Cannot exceed 300°C. Call GEO PSI for more information.
(4) UL2225.

Material

Product Number

Stainless Steel 316L

PLEASE CALL

Incoloy 825

PLEASE CALL

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.

Contact Information

Provide us with the necessary contact, and location information.


 

 

Downhole Conditions

Tell us about the downhole environment present in your well.


 

Please describe the type of environment the sensors will be in.

 

 

Packer/Obstruction #1

Packer/Obstruction #2

Packer/Obstruction #3

 

Completion Data

Please provide us with as much information on your specific completion as possible.


Surface Casing

 

Production Casing

2nd Production Casing

Tubing

2nd Tubing

Liner

 

 

Open Hole

 

 

What are the major application(s) for the downhole sensor(s)?

What are your preferred wellhead exit options?

What are the surface electronics required?

 

 

 

 

 

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Measurement:

Temperature Range

-40°C to 285°C (300°C for short-term)

Temperature Accuracy

<± 2.2°C

Temperature Measurement Points

2 (Redundant or Spaced Apart)

Repeatability

<± 0.1°C (Depending on Logger)

Stability

Excellent

Resolution

Depends on Logger Input

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. 

Outside Diameter (1)

4mm / 0.160″

Wall Thickness

0.76mm / 0.030″

Seam

Gas Tungsten Arc Weld

Weld Quality (2)

Eddy Inspection

Insulation:

Material

Perflouorokoxy (PFA)

Diameter

2.413mm/0.095″

Long-Term Operating Temperature

285°C (545°F)

Short-Term Operating Temperature

300°C (572°F) (3)

Color

Red and Yellow

Core:

Alumel x2
Chromel x2

4x 24 AWG Stranded

Conductor DC Resistance Return Loop (Red + Yellow)

1,532 Ω/1,000 ft at 20°C

Armour DC Resistance

SS 316L: 22.5 Ω/1,000 ft
Incoloy 825: 32 Ω/1,000 ft

Operating Voltage

1 VDC

Mechanical:

Weight

0.051 lbs/ft

Breaking Tension

SS 316L:  2,140 lbs
Incoloy 825: 1,900 lbs

Safe Operating Tension

SS 316L:  1,300 lbs
Incoloy 825:  1,140 lbs

Crush Rating (4)

10,000 lbs

(1) Reference specification: ASTM A632; tolerance 0.1575″ – 0.1605″.
(2) Reference specifcation: ASTM E426
(3) Cannot exceed 300°C. Call GEO PSI for more information.
(4) UL2225.

Material

Product Number

Stainless Steel 316L

PLEASE CALL

Incoloy 825

PLEASE CALL

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.

Contact Information

Provide us with the necessary contact, and location information.


 

 

Downhole Conditions

Tell us about the downhole environment present in your well.


 

Please describe the type of environment the sensors will be in.

 

 

Packer/Obstruction #1

Packer/Obstruction #2

Packer/Obstruction #3

 

Completion Data

Please provide us with as much information on your specific completion as possible.


Surface Casing

 

Production Casing

2nd Production Casing

Tubing

2nd Tubing

Liner

 

 

Open Hole

 

 

What are the major application(s) for the downhole sensor(s)?

What are your preferred wellhead exit options?

What are the surface electronics required?

 

 

 

 

 

  • Your email is safe with us.

Want to know more?

One of our team members would be happy to help.

Category

Vertical Integration

Category

Cable Protectors

Category

Top Posts

Category

Artificial Lift

Category

TEC

Category

Downhole Gauges

Looking for a complete fit for purpose solution 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 application.

Contact Information

Provide us with the necessary contact, and location information.


 

 

Downhole Conditions

Tell us about the downhole environment present in your well.


 

Please describe the type of environment the sensors will be in.

 

 

Packer/Obstruction #1

Packer/Obstruction #2

Packer/Obstruction #3

 

Completion Data

Please provide us with as much information on your specific completion as possible.


Surface Casing

 

Production Casing

2nd Production Casing

Tubing

2nd Tubing

Liner

 

 

Open Hole

 

 

What are the major application(s) for the downhole sensor(s)?

What are your preferred wellhead exit options?

What are the surface electronics required?

 

 

 

 

 

  • Your email is safe with us.

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