钻探工程2024，Vol.51Issue(4)：38-45,8.DOI:10.12143/j.ztgc.2024.04.006
安全高效钻探用梯度结构金刚石复合片制备技术研究
Research on the preparation technology of gradient structure diamond composite disc for safe and efficient drilling
摘要
Abstract
Polycrystalline diamond bits have the widest application in oil and gas drilling and deep formation drilling.Polycrystalline diamond compact(PDC)consists of a polycrystalline diamond layer and a cemented carbide substrate.Due to the difference in the coefficient of thermal expansion between the polycrystalline diamond layer and the tungsten carbide matrix,there is a huge residual stress inside the PDC after sintering and cooling.To solve the problem of reducing the residual stresses inside the PDC,this paper reports a preparation technology for gradient structure diamond compact.Through the process of fused deposition modelling and sintering(FDMS),the technical route for the preparation of gradient structure diamond compact was determined;the micro-morphological features of the prepared gradient structure diamond compact and the distribution of the residual stresses were analysed;and the indoor drilling tests were carried out to verify the drilling performance of the gradient structure diamond compact.The results show that the gradient structure diamond compact prepared by the FDMS has a compressive stress of 1.4GPa at the interface between the polycrystalline diamond layer and the gradient layer,which significantly improves the interlayer bonding ability and effectively reduces the internal residual stress,and improves the drilling efficiency by about 36%and the service life is longer compared with that of the conventional compact.关键词
熔丝制造工艺/梯度结构/金刚石复合片/残余应力/拉曼光谱/PDC钻头/深部钻探Key words
fused filament fabrication/gradient structure/diamond compact/residual stress/Raman spectroscopy/PDC bits/deep drilling分类
天文与地球科学引用本文复制引用
邵众望,张绍和,荣令龙,孔祥旺,李俞露..安全高效钻探用梯度结构金刚石复合片制备技术研究[J].钻探工程,2024,51(4):38-45,8.基金项目
国家自然科学基金面上项目"钻进坚硬岩层的梯度结构PDC应力调控机制与3D打印制备技术研究"(编号:42372358) （编号:42372358）
国家重点研发计划项目"金刚石超硬复合材料制品增材制造技术与应用研究"(编号:2021YFB3701800) （编号:2021YFB3701800）
湖南省自然科学基金面上项目"基于岩石压入-刻划强度定量表征的钻头参数设计智能化研究"(编号:2022JJ30709) （编号:2022JJ30709）
