欠平衡连续油管钻井，可减少钻井过程中对地层和产层的损害，可提高机械钻速，安全高效率钻井，降低钻井成本。
UBD with CT can reduce the formation and pay zone damage, enhance the penetration rate, improve safe operation with high efficiency and drop drilling costs.
欠平衡连续油管钻井，可减少钻井过程中对地层和产层的损害，可提高机械钻速，安全高效率钻井，降低钻井成本。
UBD with CT can reduce the formation and pay zone damage, enhance the penetration rate, improve safe operation with high efficiency and drop drilling costs.
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