卵砾石地层钻探用大直径加强型金刚石钻头的研制

Development of Large Diameter Reinforced Diamond Bit for Drilling in Gravel Strata

摘要:

采用不同于常规金刚石钻头的设计理念，选用高强度金刚石及耐磨金刚石聚晶体，对普通金刚石钻头胎体配方进行了改进，对常规金刚石钻头的烧结工艺参数作了适当的调整，试制出大直径加强型金刚石钻头。该钻头在耐磨性、抗冲击韧性及保径等方面较常规金刚石钻头显现出较大优势。在不改变常规钻进参数的情况下，较好地解决了卵砾石、破碎地层钻头寿命短、钻进速度慢、钻头易过早损坏等问题，可供类似的地层钻探施工选用。

Abstract:

With different design idea, improvement was made on matrix formula of traditional diamond bit by selecting high strength diamond and wear-resistance diamond polycrystalline and adjustment was made on the sintering parameters of traditional diamond bit. A large diameter reinforced diamond bit was developed, which has advantages over traditional diamond bit in wearing-resistance, anti-impact toughness and bit diameter retention. The bit service life in gravel and broken formations and drilling rate were improved with no changes of traditional drilling parameters.