diamond core drilling

基本解释

3 diamond core drilling for alloy steel plate is used for alloy steel pipe, core rod, casing of diamond core drilling.
金刚石岩芯钻探用合金钢板是用于金刚石岩芯钻探的钻杆、岩心杆、套管的合金钢板。
Two technical measures for diamond wireline core drilling into bad formations are introduced in this paper to solve two outstanding problems.
对付金刚石绳索取芯钻进复杂地层施工中的两个突出问题，有两项比较有效的技术措施。
It is proved that Ni Mn matrix diamond core bits are suitable for drilling hard and broken rock, strong abrasive formation and soft hard alternate formation.
实践证明，镍锰胎体钻头特别适用于钻进坚硬破碎、强研磨性地层和软硬交替的地层。