MINING EXPLORATION
Borehole Surveying
‘B
orehole surveying has had a long history of mainly steady development due largely to the demands of the upstream oil and gas
industry where the stakes are high, including the available investment for the right methods.
‘Pure’ research National geological surveys have also
played their part, with the emphases on ‘pure’ research and the mapping of a state’s mineral and water resources. Similarly the mining industry is naturally interested in potential reserves, although perhaps on a smaller and more detailed scale. Te industry is also interested in
using well monitored boreholes to find out about geological structures that may disrupt mining plans, groundwater to be used or avoided, and perhaps voids due to older mine workings and natural processes. Te ever-present pressure on costs means that it is important to reduce the time taken for drilling, monitoring, data collection and analysis of results if possible. Tus cutting the time taken for procedures is a spur to development. Reflex (Tidex group) recently
introduced a rapid descent version of the Reflex ACT digital core orientation instrumentation package with the ACT III RD. Subject to the condition of the bottom hole assembly it is claimed to
Maurice Jones examines the latest developments in borehole surveying
Maurice Jones untersucht die neuesten Entwicklungen in der Bohrlochvermessung
Maurice Jones examina los últimos avances en la topografía del pozo
11 INTERNATIONAL MINING ENGINEER
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46