GTC-11 | 1-11/16” Gamma Ray Temperature CCL Tool with Negative Feed Through

The 1-11/16” Gamma Ray/Temperature/CCL tool (GTC-11) is a multi-sensor correlation and well monitoring tool. The GTC-11 includes a Platinum RTD sensor which provides high-resolution wellbore temperature data with fast response. The GTC-11 also has a GR detector (scintillation crystal and a rugged photomultiplier tube) to measure the formation natural GR activity. The tool has a magnetic sesnor to locate casing collars, CCL.

The GTC-11 model has feed-through wiring to a standard GO connector on the bottom so when a negative voltage is applied at the cable head, the negative voltage is routed directly to bottom GO connector. This function allows a Noise tool, or any other negative-powered tool, to be used below the GTC-11.

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Applications

Borehole fluid temperature
Depth correlation
Combine two services in one run
Noise logging when a noise tool is attached

Features

Rated for high-temperature and high-pressure environments
Inline temperature probe
CCL outputs a line shake signal to the surface
Temperature tool outputs positive pulses calibrated to 20 counts/°C
Gamma Ray tool outputs negative pulses of actual Gamma Ray detector
Gamma Ray has a maximum output of 5000 counts
Can be used with a negative powered noise tool attached to the bottom connector
When a negative voltage is applied at the cable head, the negative voltage is routed directly to the bottom of the tool
Compatible with most surface systems
Designed to make pulse conflicts impossible
Electronic design verified for 1 hour operation at 415°F to ensure reliability
H2S resistant materials

Specifications

Tool Operating Voltage 100-150 VDC Tool Length (make-up) 141.4 cm (55.66 in)
Tool Operating Current 50-60 mA Tool Length (shipping) 150 cm (59.34 in)
Output Pulses Amplitude Pos. & Neg. ~10 VDC Tool Weight 10.8 Kg (24.0 Lb)
Output Pulses Width 25 µS 0 to 5000 Count Gamma Ray Point from Top of Tool
Max. Pressure 172.4 Mpa (25 000 PSI) CCL Point from Top of Tool
Max. Temperature 204°C (400°F) Borehole Fluids Any
Tool Diameter – OD 42.85 mm(1 11/16 in) Top End Connector Contact Socket Go Female

 

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