单头井壁封隔器
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.
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.
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