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《Atural Gas Industry》 1989-02
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Improving Direction of Three Roller Bit

Xu Zhengming  
In this paper, on the basis of the results obtained from the bench and field tests of the three roller bit, its improving direction is approached. It related to the difference In trace design between the domestic bit and the foreign one-a disputed problem in sphere of learning over a long period of time, and to the difference in analyzing the axial and angular offsets. There is also a new Intention on bearing’s seal, roller’s locking and nozzle’s mounting.
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【References】
Chinese Journal Full-text Database 1 Hits
1 PU Yong1,KUANG Yuchun1,LIU Zhipeng1,WANG Yaping1 and ZHAO Yongguang2(1.Southwest Petroleum University;2.CCDC Changqing Drilling Company);DEVELOPMENT OF ROLLER BITS SEAL TESTING MACHINE[J];Drilling & Production Technology;2009-05
【Co-references】
Chinese Journal Full-text Database 2 Hits
1 ZHOU Jian-feng,GU Bo-qin (College of Mechanical and Power Engineering, Nanjing University of Tec hnology, Nanjing 210009, China);Choice of Sensors and Error Analysis for Mechanical Seal Testing Machine[J];Machine Tool & Hydraulics;2004-06
2 ZHOU Jian-feng,GU Bo-qin (College of Mechanical and Power Engineering, Nanjing University of Technology, Nanjing 210009,China);Research on mechanical seal testing machine and its testing technique[J];Petro-chemical Equipment;2003-06
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