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冶金、有色系统直接或间接从事钻探工作的人员,约占整个地质队伍的三分之一.钻探费用约占地质总投资的30%.这足以说明钻探工作的重要性. 以尽量少的资金,尽快地获得可靠的地质资料,是钻探技术发展的总目标.为此就要实现少打钻、打好钻、快打钻. 一、所谓少打钻,指的是能减少进尺的钻探技术,如定向分枝孔的钻进技术.澳大利亚在勘探一个埋深1000米的镍矿体时,从一个主孔500多米的深处打了5个分枝孔,比单孔钻进少打一半进尺,节省了11万美元.通常情况下,要有3个孔才能确定地质体的产状,而采用岩心定向技术,只要一个孔就可以了.坑内钻探也可以大量节约进尺.国外
Metallurgical, non-ferrous systems directly or indirectly engaged in drilling work of the staff, accounting for about one-third of the total geological team drilling costs account for about 30% of the total geological investment.This is enough to illustrate the importance of drilling.With as little money, As soon as possible to obtain reliable geological data is the overall goal of the development of drilling technology .To achieve less drilling, drilling, drill quickly.A so-called less drilling, refers to the reduction of footage drilling technology, Such as directional branch hole drilling technology.Australia in exploration of a depth of 1000 meters of nickel ore body, from a main hole depth of more than 500 meters playing five branch holes, drilling less than half the hole into a single hole footage , Saving $ 110,000.Generally, there are three holes to determine the production of geological body, and the use of core orientation technology, as long as a hole on it. Drilling pit can also save a lot of footage.