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首页> 外文会议>Conference on Abrasive Technology in China >Experimental Research on Erosion and Corrosion of WC-base Matrix Materials for Drill Bits under Impingement of Drilling Muds
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Experimental Research on Erosion and Corrosion of WC-base Matrix Materials for Drill Bits under Impingement of Drilling Muds

机译：钻孔撞击下钻头钻头腐蚀和腐蚀的实验研究

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摘要

In oil drilling the failures of PDC drill bits are exhibited as erosive wear, dropping and breaking of cutters, so the erosion and corrosion resistance of the matrix is one of the key factors affecting the quality of PDC bits. In order to understand the degradation mechanism of matrix materials for drill bits, a kind of loop recirculation rig is adopted to measure total mass loss TML, mass loss E by pure mechanical erosion, and then through calculation the mass loss C+S by corrosion and synergy is obtained. The tested and calculated results show that TML of matrix materials is not only caused by pure mechanical erosion, but also by corrosion and their synergy of mechanical erosion and corrosion. In the discussed scope of this paper the volume loss produced by corrosion and synergy is 24.16% of the total volume loss (TVL) at most, which tells us that the corrosion resistance of matrix materials should be considered carefully besides their erosive resistance in the design and selection of PDC drill bits used in the corrosive drilling muds.
机译：在石油钻井中，PDC钻头的故障被展示为切割器的腐蚀磨损，下降和破碎，因此矩阵的腐蚀和腐蚀性是影响PDC位质量的关键因素之一。为了了解钻头材料的劣化机制，采用一种环再循环钻机来测量总质量损失TML，通过纯机械侵蚀来测量质量损失E，然后通过腐蚀和腐蚀计算质量损失C + S获得协同作用。测试和计算结果表明，TML的基质材料不仅是由纯机械侵蚀引起的，而且是通过腐蚀和机械侵蚀和腐蚀的协同作用。在本文所讨论的范围内，腐蚀和协同作用产生的体积损失最多是24.16％的总体积损失（TVL），这告诉我们，除了在设计中的侵蚀性外，应仔细考虑基质材料的耐腐蚀性腐蚀性钻井泥浆中使用的PDC钻头选择。

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