油气钻井极硬岩层钻头用孕镶齿研究  

Study on impregnated teeth for bits in extremely hard rock formation of oil and gas drilling

作　　者：徐良[1,2] 刘一波[2,3] 孙延龙[2] 周劲辉 XU Liang;LIUYibo;SUNYanlong;ZHOU Jinhui(Advanced Technology&Materials Co.,Ltd,Beijing 100081,China;Beijing Gang Yan Diamond Products Company,Beying 102200,China;Central Iron&Research Institute,Beijing 100081,China;College of Petroleum Engineering,China University of Petroleum-Beijing,Beijing 102249,China)

机构地区：[1]安泰科技股份有限公司,北京100083 [2]北京安泰钢研超硬材料制品有限责任公司,北京102200 [3]钢铁研究总院,北京100083 [4]中国石油大学(北京)石油工程学院,北京102200

出　　处：《粉末冶金工业》2021年第4期105-109,共5页Powder Metallurgy Industry

基　　金：北京市科委重大专项资助(Z171100002317017)。

摘　　要：本文介绍了油气钻井极硬岩层钻头用孕镶齿的原材料和结构设计,并重点介绍了孕镶齿制备关键技术—金刚石"包裹球"技术和热等静压处理工艺对孕镶齿物理力学性能的影响。通过室内孕镶齿磨削试验验证了热等静压工艺对孕镶齿的致密度和耐磨性的影响;制备了6吋孕镶钻头并在钻井平台试验,孕镶钻头在压力6.7 t(67 kN)和转速140 r/min的条件下,钻进10级硬度花岗岩平均机械钻速可达2.7 m/h。This paper introduces the raw material and structure design of impregnated teeth used for drilling bits in extremely hard rock at oil and gas exploitation, and emphatically introduces the key technology of impregnated teeth preparation, which are the Diamond "encapsulated ball" technology and HIP process treatment technology.The influence of HIP process on the density and wear resistance of impregnated teeth is verified by indoor grinding test and 6 inch impregnated bits are prepared and test on drilling platforms. The average drilling speed of the impregnated bits in Grade 10 hardness granite can reach 2.7 m/h under the pressure of 6.7 t and rotary speed of140 r/min.

关 键 词：油气钻井 孕镶齿 金刚石包裹球 热等静压工艺 平均机械钻速 

分 类 号：TE921[石油与天然气工程—石油机械设备]