ICL Wireline Logging Tool

ICL

Induction Collar Locator

ICL-AThe patented (US6,084,403) Induction Collar Locator tool is used to make depth corrections to logs by identifying the location of casing collars, including flush joints, and to inspect other mechanical features of the casing such as thickness variations or perforations.

The ICL uses a low-frequency induction method with a transmitter and two receiver coils arranged to provide an absolute phase measurement that senses the average thickness of metal around the tool, along with a two inch differential measurement to sense smaller details such as collars, casing centralizers and perforations or cracks in the casing.

Unlike conventional CCL magnetic collar locators, the ICL is independent of logging speed and even works while stationary.  Since it does not contain magnets there is no problem with sensitivity degradation caused from time or temperature and requires no special handling or safety concerns.  It works in either centralized or eccentered configurations.

The ICL will operate in all casing/tubing sizes although the response is best in casing sizes from 4 ½” to 9 5/8” and weights up to 35 lb/ft.  The small tool diameter allows it to pass through tubing as small as 2 3/8”.  Tubing joints are measured as well as casing collars through the tubing. The small diameter of the ICL compared to other Casing Inspection tools is a great advantage, because it is not necessary to pull tubing out of the well.

ICL

Induction Collar Locator

ICL-AThe patented (US6,084,403) Induction Collar Locator tool is used to make depth corrections to logs by identifying the location of casing collars, including flush joints, and to inspect other mechanical features of the casing such as thickness variations or perforations.

The ICL uses a low-frequency induction method with a transmitter and two receiver coils arranged to provide an absolute phase measurement that senses the average thickness of metal around the tool, along with a two inch differential measurement to sense smaller details such as collars, casing centralizers and perforations or cracks in the casing.

Unlike conventional CCL magnetic collar locators, the ICL is independent of logging speed and even works while stationary.  Since it does not contain magnets there is no problem with sensitivity degradation caused from time or temperature and requires no special handling or safety concerns.  It works in either centralized or eccentered configurations.

The ICL will operate in all casing/tubing sizes although the response is best in casing sizes from 4 ½” to 9 5/8” and weights up to 35 lb/ft.  The small tool diameter allows it to pass through tubing as small as 2 3/8”.  Tubing joints are measured as well as casing collars through the tubing. The small diameter of the ICL compared to other Casing Inspection tools is a great advantage, because it is not necessary to pull tubing out of the well.

ICL Specifications

Mechanical specifications are based on tool mounted in pressure barrel and GO Pin connections. Custom options available.

MechanicalDiameter (OD)1 11/16”
Length (make-up)24.0”
Weight6.8 lb.
End ConnectorsGO Single Pin
MaterialTi-6Al-4V Titanium
PerformanceSensitivity/Range2-3/4″ to 9-5/8″ casing; 0 – 35 lb/ft
Accuracy1 lb/ft.
Resolution0.1 lb/ft.
EnvironmentalOperating Temperature175°C (350°F)
Survival Temperature204°C (400°F)
Pressure15,000 psi
Power RequirementsInput Voltage46V-48V (Digital); 48V-200V (Analog)
Input Current30mA
Output SignalModulated Current
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