GK-S-95 Downhole Spectrometer

Detailed Product Description:

The GK-S-95 tool provides measurement of the content of U, Th and K radionuclides.

Downhole Spectrometer

The GK-S-95 tool provides measurement of the content of U, Th and K radionuclides.

The GK-S method employs the registering of gamma-quanta of natural gamma-ray radioactive nuclides (Potassium-40, Uranium and Thorium series). The Potassium, Uranium and Thorium content is estimated according to the gamma-quanta energy spectrum data, aquired from the tool. The various ratio of these elements distinguish the various types of clay and rocks.

Thus, the method enables the lithology of the geology section penetrated by the well and the survey of clayiness and clay types according to radionuclide content.

Specifications

Number of channels in energy spectra	512
Energy range, MeV	0.04-3.5
*Recording channel idle time , microseconds*	0.4
Detector energy resolution *by Cs-137*, %	< 12
Gamma-ray detector size, mm	50250
Detector type	NaI(Tl), CsI (TI)
Telemetry (quadrature-amplitude modulation)	QAM-64
Transmission rate, Kbaud	512
Duplex communication
Relative error of measurement for the uranium and thorium content in the range of 15-20ppm, and for the potassium content in the range of 3-4%, %
Uranium and thorium content measurement range, ppm	>5
Potassium concentration measurement range, %	0,05-200
Duplex communication	0,05-20
*Temperature-controlled gamma-ray detector*

Tool	Length (m)	Diameter (mm)	Temperature, max (C)	Pressure, max (MPa)	Logging speed (m/h)	Weight (kg)
GR-S-95	1,75	95	120	60	100	50

GK-S-95 Downhole Spectrometer

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