A088 Gamma Tool 27mm

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Tool Description

Imagine using a tool where the only size limitation is the diameter of your winches cable head!. Well here it is!. The entire tool has the same diameter as the cable head of an Auslog single conductor winch. This tool detects 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 borehole applications 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.

Contact Auslog Engineering for information on the effect of the drill rods on the Gamma reading.

FEATURES
Convenient and simple to use
Less sensitivity for highly radioactive environments
Suitable for very small diameter bores
Designed to be used inside drill rods for Uranium exploration
Compact and very reliable
MEASUREMENTS
Natural Gamma (Total Count)
APPLICATIONS
Coal, Uranium	Can be used inside drill rods
OPERATING CONDITIONS
Borehole type	Cased, Open-hole, Water-filled, Air, Drill Rods
TOOL SPECIFICATIONS
Diameter	27 mm / 1.063 in
Length	900 mm / 35.433 in
Weight	2 kg / 4.409 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	61 mA
Tool Power Required	1.83 W
Communications	Pulse
Cable Conductors Required	1 or 4
SENSORS
NATURAL GAMMA	NaI Scintillation Crystal
Crystal Size	12.7 mm x 44.45 mm / 1/2 in x 1 3/4 in
Calibration	Calibration Pits / API Jig
Sensor Offset	770 mm / 30.315 in
SHIPPING INFORMATION
Length	1200 mm / 47.244 lb
Width	120 mm / 4.724 in
Height	120 mm / 4.724 in
Weight	4 kg / 8.818 lb
SALES INFORMATION
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