摘要
介绍了空气锤钻头结构特点和空气锤保径技术研究现状,把空气锤钻头磨损分成了钻头齿断齿、钻头齿掉齿、钻头齿偏磨、钻头齿齿高磨损、钻头刚体磨损及钻头刚体划伤6种形式,并从材料选择、结构设计和空气锤钻井工艺3方面对磨损进行了分析。从材料选择和结构改进2个方面对现有空气锤进行了改进,提出了"三翼面"保径空气锤钻头。新型空气锤保径钻头在龙岗39井空气锤钻井应用中取得了钻进1 899.35 m只磨损2.5 mm的好成绩。
The paper introduces the structural properties of the air bit as well as the present research situation of the gauge protection technology for air hammer. The air bit abrasion is categoried into six types: bit tooth breaking, bit tooth loss, eccentric abrasion of bit tooth, abrasion of bit tooth height, abrasion of bit tooth’s rigid body and bit tooth’s rigid body scratch. The abrasion is analyzed in terms of material selection, structural design and air hammer drilling technology. Improvements have been done on the air hammer currently available in material selection and structural improvement. The 'three-wing-surface' gauge protection air bit has been developed. In its application in Well 39 of Longgang, the bit has achieved the record of 1,899.35 m drilling depth with an abrasion of only 2.5 mm.
出处
《石油机械》
北大核心
2010年第2期66-69,7,共4页
China Petroleum Machinery
基金
国家863计划课题"气体钻井技术与装备"(2006AA06A103)
关键词
空气锤
空气锤钻头
保径
空气钻井
三翼面
air hammer, gauge protection, air drilling, three-wing surface
