With 20 years'production practice, the writer proposes the methods of improving the service life of wire - line impregnated diamond drilling bits from 8 aspects.
通过近二十年的生产实践，从胎体配方等八个方面提出提高绳索取芯孕镶金刚石钻头寿命的方法。
It is proposed that economical performance of diamond bits be quantitatively appraised by use of bit drilling cost.
并提出用钻头钻进成本定量地评价金刚石钻头的经济效果。
Thee main products are: all kinds of diamond drill bits, PDC bits, casing boots, reaming, single and double tube wireline coring drilling, coring drill pipe, casing and other drilling tools.
主要产品有：各类金刚石钻头、复合片钻头、套管靴子、扩孔器、单双管绳索取芯钻具、绳索取芯钻杆、套管及其它钻探工具。
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