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井下振动对聚晶金刚石复合片(PDC)钻头性能的影响近几年来得到很好的研究。但是,对滚柱牙轮钻头井底动力学的大部分研究集中在轴向振动及其影响上。仍未解决的问题是滚柱牙轮钻头所受振动的类型和这些振动对滚柱牙轮钻头性能的影响。为了研究这些问题,进行了一系列实验室和现场试验。通过改进的仪器接头记录了井下振动数据。软到中硬地层使用了四只81/2″滚柱牙轮钻头(IADC517)钻井。观测到了三种有害振动,根据钻速、硬合金齿破损、轴承/密封寿命讨论了这些有害振动对钻头性能的影响。
The effect of downhole vibrations on the performance of polycrystalline diamond compact (PDC) drill bits has been well studied in recent years. However, most of the research on roller cone bit bottom dynamics focuses on axial vibration and its impact. The unresolved issue is the type of vibration the roller cone bit experiences and the effect this vibration has on roller cone bit performance. In order to study these issues, a series of laboratory and field experiments were conducted. Downhole vibration data was recorded through a modified instrumentation connector. Four hard-to-medium hard formations were drilled with four 81/2 "roller cone roller bits (IADC517) Three harmful vibrations were observed and were discussed in terms of drilling speed, hard alloy tooth damage, bearing / seal life, The impact of performance.