A031 Gamma Tool 43mm

Print friendly version

Back to catalogue

Tool Description

These tools detect natural gamma radiation emanating from the subsurface rocks. Gamma rays are very high frequency electromagnetic radiation and are derived from the radioactive decay of various elements. In boreholeapplications the most common radioactive elements are radio isotopes of K, Th, and U.

Gamma Ray Log Applications

Gamma ray logs provide a clear indication of variations in lithology and also accurately define bed thickness. Shaly bands are obvious and can be readily identifies because clay content results in a high gamma count.The gamma ray log is also used for identification of coal as coal typically exhibits a low count rate. In this application a high sensitivity gamma tool generally provides best results.In petroleum applications the higher the gamma activity of the clay size fraction is due to the potassium contained in clay minerals, fine micas and feldspars.

This is not only useful information in its own right, but is a crucial parameter in the accurate interpretation of density and neutron logs.Gamma ray logs are an obvious choice in Uranium exploration and development. The relationship between uranium content and count rate may be used so that ore grades may be determined in the borehole.Groundwater and engineering applications utilise the gamma ray for lithology indications and strata thicknesses as well as clay content, to determine permeability and rock strength. A gamma can be incorporated into almost every tool combination.

FEATURES
Convenient and simple to use
Large-volume scintillation detector for high sensitivity
MEASUREMENTS
Natural Gamma (Total Count)
APPLICATIONS
Coal, Uranium	Mineral detection
OPERATING CONDITIONS
Borehole type	Borehole type: cased or open-hole, water-filled
TOOL SPECIFICATIONS
Diameter	43 mm / 1.693 in
Length	1130 mm / 44.488 in
Weight	4 kg / 8.818 lb
Min. Temperature	0ºC / 32 ºF
Max. Temperature	70ºC / 158ºF
Max. Pressure	21 000 kPa / 3000 psi
Tool Voltage Required	30 VDC
Tool Current Required	43 mA
Tool Power Required	1.29 W
Communications	Pulse
Cable Conductors Required	1 or 4
SENSORS
NATURAL GAMMA	NaI Scintillation Crystal
Crystal Size	25.4 mm x 76.2 mm / 1 in x 3 in
	Other crystals sizes available on request.
Calibration	Calibration Pits / API Jig
Offset	N/A
SHIPPING SPECIFICATIONS
Length	1300 mm / 51.181 in
Width	120 mm / 4.724 in
Height	120 mm / 4.724 in
Weight	6 kg / 13.227 lb
SALES INFORMATION
Click here to contact sales for more information

p | Down | Top | Bottom