ANALYSIS ON THE FAILURE OF AIR FLUSH ROTARY PERCUSSIVE DRILLING BIT TEETH AND EXPERIMENTAL STUDY ON NEW MATERIALS

doi:10.3863/j.issn.1674-5086.2010.04.034

西南石油大学学报(自然科学版) ›› 2010, Vol. 32 ›› Issue (4): 175-178.DOI: 10.3863/j.issn.1674-5086.2010.04.034

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ANALYSIS ON THE FAILURE OF AIR FLUSH ROTARY PERCUSSIVE DRILLING BIT TEETH AND EXPERIMENTAL STUDY ON NEW MATERIALS

HUANG Zhi-qiang¹SHEN Yue²BU Yan¹HUANG Ji-liang¹HUANG Wei¹

（1.MOE Key Laboratory of Oil & Gas Equipment,Southwest Petroleum University,Chengdu Sichuan 610500,China;2.Supplies Department,Shengli Oilfield,SINOPEC,Dongying Shandong 257101,China)

Received:1900-01-01 Revised:1900-01-01 Online:2010-08-20 Published:2010-08-20

Abstract

Abstract: The teeth of Air flush Rotary percussive Drilling bit often breaks,falls and badly worn,which leads to a low efficiency of rock breaking and a short service life.To solve the problem,we adopt the Nano modification technology which adds nanoAl₂O₃to the hard alloy,then develop the Al₂O₃/WC Co Nano/Micro Composite Material.An analysis of its performance,micro structure and an experimental study on its resistance and impact resistance are made.The results indicates that adding 3% of nano Al₂O₃,appropriate amount of inhibitors,and Rare Earth Element(REE) can distinctly improve the micro structure of Al₂O₃/WC Co Nano/Micro composite and refine grains.It also greatly increases the wear resistance and impact resistance to 4~8 times than Hard alloy(YG8).All the above provide a possibility of improving the efficiency of rock breaking and extending the bit′s service life.

Key words: Rotary percussive Drilling Bit, Nano Composite Material, Al₂O₃/WC Co, structure

CLC Number:

TE256

HUANG Zhi-qiang SHEN Yue BU Yan HUANG Ji-liang HUANG Wei. ANALYSIS ON THE FAILURE OF AIR FLUSH ROTARY PERCUSSIVE DRILLING BIT TEETH AND EXPERIMENTAL STUDY ON NEW MATERIALS[J]. 西南石油大学学报(自然科学版), 2010, 32(4): 175-178.

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URL: http://journal15.magtechjournal.com/Jwk_xnzk/EN/10.3863/j.issn.1674-5086.2010.04.034

http://journal15.magtechjournal.com/Jwk_xnzk/EN/Y2010/V32/I4/175

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ANALYSIS ON THE FAILURE OF AIR FLUSH ROTARY PERCUSSIVE DRILLING BIT TEETH AND EXPERIMENTAL STUDY ON NEW MATERIALS

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