... 永久完井封隔器:permanent-completion packer 永久完井:permanent completion 永久式水力坐封封隔器:hydro-set permanent packer ...
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短语
永久完井封隔器
[油气]
permanent-completion packer
永久完井法
permanent completion
单封隔器永久完井法
permanent completion with single packer
单管永久式完井管柱
Single String Permanent Completion
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