MWD/LWD Gamma for Oil & Gas Drilling, Wireline Logging and Casing Inspection Tools

Gamma Ray Tools

CBG offers a full line of scintillator based Nal(Tl) gamma ray sensors for MWD systems and Wireline logging. Three diameters are available for MWD, 0.75”, 1.05”,1.36”, for both probe based and collar mounted systems. Three models provide focused measurements including the DGA, DGA-C and the new Dual-Detector gamma tool for Azimuthal measurements.

Gamma Ray Tools

CBG offers a full line of scintillator based Nal(Tl) gamma ray sensors for MWD systems and Wireline logging. Three diameters are available for MWD, 0.75”, 1.05”,1.36”, for both probe based and collar mounted systems. Three models provide focused measurements including the DGA, DGA-C and the new Dual-Detector gamma tool for Azimuthal measurements.

Custom Gamma Tools

In addition to our standard off-the-shelf gamma tool models, we will work with your design team to develop a custom gamma tool to meet your specific requirements. We currently supply more than 15 unique custom designs to customers around the world.

Wireline Logging Tools

Gamma Ray and Collar Locator sensors are available for accurate depth correlation as stand-alone analog output tools.  CBG’s patented Induction Collar Locator (ICL) tool is unlike other Casing Collar Locator (CCL) tools since it is independent of logging speed and does not contain magnets that can cause sensitivity degradation from time or temperature.  Two diameters are available for Wireline Logging Gamma Ray including the 1 11/16”, NGT-B and 1 3/8”, NGT-S when mounted in a pressure barrel with GO Pin connections. The ICL is available in 1 11/16” in this configuration as well.  Custom options are available for CBG Gamma Ray and ILC tools.

Wireline Logging Tools

Gamma Ray and Collar Locator sensors are available for accurate depth correlation as stand-alone analog output tools.  CBG’s patented Induction Collar Locator (ICL) tool is unlike other Casing Collar Locator (CCL) tools since it is independent of logging speed and does not contain magnets that can cause sensitivity degradation from time or temperature.  Two diameters are available for Wireline Logging Gamma Ray including the 1 11/16”, NGT-B and 1 3/8”, NGT-S when mounted in a pressure barrel with GO Pin connections. The ICL is available in 1 11/16” in this configuration as well.  Custom options are available for CBG Gamma Ray and ILC tools.

Casing Inspection Tools

Initially designed to locate flush-collar joints for depth correlation measurements, the patented Induction Collar Locator (ICL) is also used to inspect other mechanical features of the casing such as wall thickness variations produced by corrosion and perforations.  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 Casing Inspection Thickness Measurement tool (CITM) is an enlarged version of the ICL, designed for inspecting water well casings from 12” to 30” diameter. It simultaneously measures Casing Weight, Internal Casing Diameter, Collars and Centralizers, Perforations and Internal/External Corrosion.

MWD Tools | CITM | Gamma Ray Logging | Gamma Sensors

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