卵砾石地层金刚石钻头的试验研究

Experimental Study on Diamond Bit for Drilling in Gravel Stratum

摘要:

卵砾石地层钻进是钻探的难题之一，不仅钻进速度低，钻头的使用寿命短，而且钻探成本高。针对卵砾石地层钻进，开展了新型结构钻头的试验研究，研制成一种金刚石-聚晶体复合型钻头，现场试验表明，钻头的钻进速度能够≮1.8 m/h，使用寿命能够达到50 m，钻探成本较低。

Abstract:

Drilling in gravel stratum is one of present difficulties in drilling area with low drilling speed, short service life of bit and high drilling cost. Experimental study was made on diamond bit with new structures in order to improve gravel stratum drilling and developed a diamond-polycrystalline compound bit. Field tests indicate that this type of diamond bit has a promising application prospect based upon the fact that the drilling rate of diamond bit can be no less than 1.8m/h and the service life of bit reach to 50m with the lower drilling cost in addition.