基于火成岩地层特性的个性化钻头设计  

Design of Personalized Bit Based on Volcanic Rock Formation Properties

作　　者：张立刚[1] 闫铁[1] 徐宏伟[2] 韩汝峰[3] 刘光贞[3] 

机构地区：[1]东北石油大学提高油气采收率教育部重点实验室,黑龙江大庆163318 [2]大庆油田有限责任公司第三采油厂,黑龙江大庆163113 [3]大庆钻探工程公司国际事业部,黑龙江大庆163113

出　　处：《石油矿场机械》2013年第9期31-35,共5页Oil Field Equipment

基　　金：国家"十二五"重大专项(2010ZX05021-002);中国石油科技创新基金项目(2012D-5006-0306)

摘　　要：对松辽盆地北部深层火成岩地层进行了抗钻特性参数测试。结合火成岩地层特点,设计了一种硬质合金齿和PDC齿混合布齿钻头,具有3个牙轮,牙轮装配具有超顶和移轴结构,能够形成滚动冲击和滑动剪切双重运动;钻头同一齿排交替布置硬质合金齿和PDC齿,硬质合金齿出露高度高于PDC齿,级差为2.5mm,PDC齿后倾角为30°,侧倾角为15°,工作面的法线方向与复合滑动方向保持一致,侧倾方向指向临近齿槽。该设计方法整合了牙轮钻头和PDC钻头优点,提高了对地层的破碎效率和钻头寿命。The volcanic rock in deep formations of the northern part of Song liao basin has the fol-lowing characters：high abrasive property,high hardness,and high drillability,which lead to manydrill bit accidents,few footage per bit,low efficiency of drilling,and longer drilling cycle,whichseverely restrict the gas field exploration and development process.According to the features ofdeep formation,a hybird cutters bit is designed.It has three cones,with the overhang cone,duplicate taper and offset cone characters.The tungsten carbide cutters and the polycrystalline diamond compacts cutters are alternative collocation in the same tooth row of the bit.The exposed heigh of the tungsten carbide cutters is higher than polycrystalline diamond compacts ones.The back rake angle of polycrystalline diamond compacts cutters is 30 °,the side rake angle is 15°.The working face normal direction keeps same with the composite slip direction,and the side rake direction pointed at gullet.Through the design method,it is integrated that the advantage of roller bit and PDC bit,the ROP and bit life are improved.

关 键 词：可钻性 硬质合金齿 聚晶金刚石复合片 混合布齿钻头 

分 类 号：TE921.102[石油与天然气工程—石油机械设备]