吉林大学学报(地球科学版) ›› 2018, Vol. 48 ›› Issue (6): 1804-1809.doi: 10.13278/j.cnki.jjuese.20170221
• 地质工程与环境工程 • 上一篇
高科1, 高红通1, 谭现锋2, 赵长亮2, 李梦3
Gao Ke1, Gao Hongtong1, Tan Xianfeng2, Zhao Changliang2, Li Meng3
摘要: 干热岩具有硬度大、研磨性弱、可钻性差和钻进难度大等特点,常规孕镶金刚石钻头钻进时打滑严重、寿命短。针对此技术难题,根据干热岩岩性和设计的井身结构特点,引入仿生高效耐磨技术,以穿山甲爪趾为仿生原型,结合孕镶金刚石钻头的结构和制备工艺方法,研制了与该类地层相对应的仿生异型齿钻头。在青海共和县干热岩现场的钻进试验结果表明:仿生异型齿钻头未出现打滑现象,相比于打滑不严重的常规软胎体孕镶金刚石钻头,仿生异型齿钻头的钻进速度提高97.5%,寿命(仿生钻头寿命为推算寿命)提高1.268倍。进一步证明了仿生异型齿钻头在坚硬打滑的干热岩地层中钻进能够提高效率、缩短钻井周期、节约钻井成本。
中图分类号:
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