单头井壁封隔器
Model Y 441 B double anchoring packer is a single-slip double-cone packer, which adopts hydraulic setting and pipereleasing.
Y441B型双向锚定封隔器是一种单卡瓦及锥体锚定式封隔器, 它利用液压坐封、提放管柱解封.
Open hole single packer test string
裸眼单封隔器测试管柱
Compared with single parker test, support anchor straddle packer test tubular string is more complicated.
与传统的单封隔器管柱相比, 支撑式跨隔测试管柱受力状况更加复杂,测试风险加大,常常失利.
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