... mechanical rig 机械驱动钻机 mechanical sand control 机械防砂 mechanical sand retention device 机械防砂装置 ...
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The period of validity of one-off high pressure pack mechanical sand control technology has been extended. The success ratio of one-off sand control has been improved.
通过改进，克服了原来一次性高压充填机械防砂技术有效期短的缺点，有效提高了一次性防砂成功率。
The results show that the expansion screen completion is more advantageous in open hole completion than in cased hole completion compared with the mechanical sand control completion.
本文结合理论分析和实验来研究膨胀筛管完井后产能，并与一般机械防砂方式进行了分析对比。
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