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Application of Micro-coring Bit in Jidong Oilfield
ZHANG Meng;CHENG Run;WANG Sheng-wu;GAO Xue-sheng;XIAO Yang-de;CHEN Jun;ZHANG Jie;CNPC Bohai Drilling Engineering Company No.1 Drilling Engineering Branch;CNPC Bohai Drilling Engineering Company No.1 Mud Logging Branch;
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