仿生孕镶金刚石钻头在漠河冻土区天然气水合物勘探钻进中的应用

仿生孕镶金刚石钻头具有高效、耐磨的特点,符合漠河天然气水合物勘探的要求及漠河钻探施工现场的条件。介绍了符合漠河地层特点的仿生孕镶金刚石钻头的设计与制造。同时对效果不理想的钻头的钻进情况进行了分析,提出了评价钻头性能时需要综合分析,从而客观、真实地反映钻头的实际钻进能力。漠河天然气水合物MK-2科学钻探试验井的钻进结果表明,仿生孕镶金刚石钻头的寿命比普通孕镶金刚石钻头长73%,钻速比普通孕镶金刚石钻头高22%。

Application of Bionic Impregnated Diamond Bit for Natural Gas Hydrate Drilling in Mohe Frozen Soil Region

Bionic impregnated diamond bit has the characteristics of high efficiency and wear resistance, which meets the requirements of the exp]oration of natural gas hydrate and the conditions of the construction site in Mohe. This paper introduces the design and manufacturing of bionic impregnated diamond bit suitable to the characteristics of Mohe formation. The paper analyzes the drilling conditions of nonideal bit and puts forward the comprehensive analysis for evaluation of bit performance to objectively and truly reflect the actual bit drilling capacity. The drilling results of MK-2 scientific drilling test well of Mohe natural gas hydrate indicate that the service life and the drilling speed of bionic impregnated diamond bits are 73% longer and 22% higher than ordinary diamond impregnated diamond bits.