Experimental Research into Increase in Diamond Drilling Effectiveness
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摘要: 为了提高金刚石钻进的效果, 根据试验研究结果建议从金刚石镀膜、胎体添加稀土元素2个方面来提高金刚石钻头的工作能力, 采用以每转进尺为基础的恒钻速钻进方法, 利用泡沫作为冲洗介质的钻进工艺.Abstract: In this paper, the diamond metallization and the adding of rare earth elements to the matrix materials are two major methods for the increase in diamond drilling effectiveness, as suggested in authors'experimental research. This increase can be achieved by the application of the drilling at a constant penetration rate based on the footing per cycle. The foam may serve as the flushing medium of the drilling technique.
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图 1 从不同温度烧结制品中回收的镀膜与未镀膜金刚石强度对比
Fig. 1. Comparison of strength of metallized diamonds with nonmetallized diamonds from different temperature hot-pressed and sintered diamond products
图 2 金刚石钻进恒钻速钻进系统原理
1.钻机; 2.电动机; 3.给进油缸; 4.调压阀; 5.功率传感器; 6.零放大器; 7.定值器; 8.控制部件; 9.伺服电机
Fig. 2. Principle scheme of constant penetration rate system while diamond drilling
图 3 泡沫洗井钻进试验台
1.三通分配阀; 2.增压装置УДКН-4;3.排送泵НБ320/63;4.钻机СКБ-5;5.配料泵НБ160/63УЗ; 6.冲洗介质池; 7.沉淀池; 8.气动消泡装置; 9.岩块; 10.主动钻杆; 11.钻机房; 12.配电盘; 13.钻机(包括液压给进装置) 控制装置; 14.空压机
Fig. 3. Drilling experiment stand for flushing with foam
图 4 装有恒钻速给进装置和未装恒钻速给进装置条件下, 转速为715 r·min-1 (a) 和1 130 r·min-1 (b) 时金刚石钻头磨损量(m) 与表面活性剂溶液体积分数(φ) 的关系曲线
1.每转进尺值h=0.08 mm·r-1; 2.h=0.12 mm·r-1; 3.h=0.16 mm·r-1; 4.未装恒钻速给进装置
Fig. 4. Dependence curves of diamond bit wear (m) on volume fraction of surface active agent solution (φ) while rotary speed is 715 r·min-1 (a) and 1 130 r·min-1 (b) with constant penetration rate feeder and without the latter
图 5 转速715 mm·r-1 (a) 和1 130 mm·r-1 (b) 时, 金刚石钻头磨损量(m) 与钻头每转进尺值(h) 的关系曲线
Fig. 5. Dependence curves of diamond bit wear (m) on penetration per revolution while rotary speed is 715 mm·r-1 (a) and 1 130 mm·r-1 (b)
1.φ=1.4%;2.φ=1.0%;3.φ=0.6%
图 6 金刚石钻头磨损量(m) 与表面活性剂溶液体积分数(φ) 的关系曲线
Fig. 6. Dependence curves of diamond bit wear (m) on volume fraction of surface active agent solution (φ)
1.n=715 r·min-1; 2.n=1 130 r·min-1; 3.n=1 500 r·min-1
表 1 胎体对不同类型金刚石包镶能力的测量结果
Table 1. Measured results of cohesive ability of matrix materials to diamonds metallized with different elements
表 2 添加稀土元素铈(Ce) 的Co基和Fe基胎体性能测量结果
Table 2. Measured results of Co-based and Fe-based matrix adding rare earth element Ce
表 3 添加稀土元素镧(La) 的Co基和Fe基金刚石复合材料性能测量结果
Table 3. Measured results of Co-based and Fe-based diamond composites adding rare earth element La
表 4 未装恒给进装置的泡沫洗井钻进试验结果
Table 4. Drilling experiment results for flushing with foam and without constant feeder
表 5 装有恒给进装置的泡沫洗井钻进试验结果
Table 5. Drilling experiment results for flushing with foam and constant feeder
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