Others
Description
Natural gamma ray logging tool is designed to measure the formation’s natural gamma intensity and compare formation depth. The measuring probe consists of electron-multiplier phototube and NaI crystal. During measuring, the NaI crystal changes the energy of gamma ray into blinker light. The blinker light gets into the electron-multiplier phototube and generates electrical pulse. The electrical pulse is faired and enlarged, then transmitted to WTC after processed by onboard computer, and at last transmitted to the surface by cable. The counting value reflects the intensity of natural gamma.
Characteristics:
Small correlation counting fluctuation, thermos design, especially for high temperature deep well, diameter of Φ38mm and Φ43mm.
Specification
J38一G
J43一G
Cable Requirement
single cable
Transmission Mode
remote transmission, pulse mode
Max Temperature
220℃
260℃
Max Pressure
80MPa
100MPa
Rated Working Current
30mA±5mA
Rated Bus Voltage
35V+10％(remote)
40V±10％(pulse )
Gamma Resolution
1CPS
Gamma Dynamic Range
1～10000CPS
Gamma Counting Fluctuation
≤±7％(sampling time 30S, API standard calibration source)
Read More
Previous
7-PARAMETER PRODUCTION LOGGING STRING...
Xi'an Landau Petroleum Technology Co., Ltd
well logging tool
Address: 31FL, Block E, Wangzuo International Building, Tangyan 1st Road, Hi-tech Zone, Xi鈥檃n, China,
Xi'an, shannxi
China,
Tel: 0086-29-89388773
Fax: 0086-29-89383697
