services
HSHA Rate Gyro
- Horizontal Holes
Our HSHA
Rate Gyro is the only Gyro available
to the mineral and engineering industries
that is capable of surveying accurately
in the horizontal plane.
A special pump down sub has been manufactured
to fit on the end of HSHA rate Gyro
allowing it to be pumped down the drill
rods. By simply changing pump down plug
sizes, a range of drill rod sizes can be
used. Recently, 9 holes were directionally
surveyed at Placer Dome's - Kanowna Belle
Underground. These holes ranged in dip angle
from -9° to -60° and 750m to 900m in depth.
Our purpose built and underground registered
vehicle fitted with AFFF Fire suppression
sytem is mobilised to the drill hole. The
pump down sub is attached to the end of
Gyro and the cable fed through a pump down
stuffing box.
Directional surveying is usually carried
out on the way out, maintaining a constant
winch speed.
RELATED ARTICLE
Dec 2003 - Horizontal Gyro surveying
DHS (Downhole Surveys) latest project
proved to be technically challenging yet
produced outstanding results by accurately
surveying horizontal ground freezing tubes
on the island of Singapore...
Full
Story
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