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
密度钻液体系，提出了改善密度钻液流变性
技术措施。
;;With regard to the leakiness and the formation’s low bearing pressure ability of Jiulongshan structure, various leak stoppage plans were experimented.
优选了九龙山构造密度钻液体系，提出了改善密度钻液流变性技术措施。
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