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发明名称
METHOD AND APPARATUS FOR PUMPING WELLS WITH A SEALING FLUID DISPLACEMENT DEVICE
摘要
申请公布号
CA2583629(A1)
申请公布日期
2004.12.06
申请号
CA20042583629
申请日期
2004.05.20
申请人
REITZ, DONALD D.
发明人
REITZ, DONALD D.
分类号
E21B43/12;E21B43/16
主分类号
E21B43/12
代理机构
代理人
主权项
地址
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