西南石油大学学报(自然科学版) ›› 1990, Vol. 12 ›› Issue (3): 101-109.DOI: 10.3863/j.issn.1000-2634.1990.03.007

• 石油机械工程 • Previous Articles     Next Articles

STANDARD MOCK SAh}PLE SELECTION FOR ROCK CRACKING IN DRILLING

Zhang Xian-pu
   

  1. (Dept .of Machinery)
  • Received:1990-04-04 Revised:1900-01-01 Online:1990-08-20 Published:1990-08-20
  • Contact: Zhang Xian-pu

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Abstract: This paper explains emphatically the importance of standard rock sample
selection, develops the principles and methods of standard rock sample sele-
ction, establishes field points for four standard rock samples all over the
country, and describes their mechanical properties.

Key words: Standard rock sample Rock cracking Drilling