With regard to the leakiness and the formation’s low bearing pressure ability of Jiulongshan structure, various leak stoppage plans were experimented.
优选了九龙山构造深井高密度钻井
，提出了改善高密度钻井流变性的技术措施。
,易,易秘密;洞，裂缝;，
;With regard to the leakiness and the formation’s low bearing pressure ability of Jiulongshan structure, various leak stoppage plans were experimented.
优选了九龙山构造深井高密度钻井，提出了改善高密度钻井流变性的技术措施。
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