Production Logging Tools
Casing Collar Locator
The Casing Collar Locator (CCL) measures the magnetic anomalies induced by charges in metallic mass in the bore hole. It is also used as a means of depth correlation and can be used to locate perforations, packers, nipples, gas lift valves, and other mechanical components of the bore hole.
Size: 1”OD, 1 3/8"OD
Temperature Rating: 475°F (246°C)
Pressure Rating: 10,000 psi
Temperature
Crelad International uses a platinum sensor that responds extremely quick to changes in temperature. The Crelad Temperature sensor measures the bore hole fluid and can be used to find gas leaks, fluid entry, and injection zones. The sensor is also very useful when locating cement tops.
Size: 1”OD, 1 3/8"OD
To 700F (bore hole)
Range: 0-150C (internal)
Accuracy: +/- 1C
Resolution: 0.01 PSI
Pressure Rating: 10,000 psi
Injector
The Crelad Injector is electronically activated and injects a finite amount of small radioactive fluid with a short half life. The pressure chamber maintains constant internal pressure while exceeding that of the well bore. The Crelad Gamma is then able to determine the fluid velocity and direction, using data recorded in real time by a surface acquisition system.
Size: 1”OD, 1 3/8"OD
Temperature Rating: 475°F (246°C)
Pressure Rating: 10,000 psi
Gamma Ray
The Gamma sensor measures the naturally occurring radioactivity in well formations, using scintillation sensors that are more sensitive than Geiger sensors. The Gamma is primarily used for adjusting the depths of production logs with other logs to form a common basis, namely the formation (lithology). The Gamma can also be used for following injected radioactive material in the bore hole to determine flow profiles and velocities; as well as trace frac sand that has been tagged with radioactive material.
Size: 1”OD, 1 3/8"OD
Temperature Rating: 475°F (246°C)
Pressure Rating: 10,000 psi
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