石油钻探自锁式钻具倒扣装置的研制
, 李开荣Development of self-locking drill tool back-off assembly for petroleum drilling
ZHANG Yaoxian① , LI Kairong② , ZHANG Pengxiang① , LIU Jin③ , DU Cong④
, LI Kairong
石油钻探自锁式钻具倒扣装置的研制 |
|
张耀先, 李开荣 |
Development of self-locking drill tool back-off assembly for petroleum drilling |
|
ZHANG Yaoxian
, LI Kairong |
| |