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发明名称
PRESSURE BALANCING PROPPANT ADDITION METHOD AND APPARATUS
摘要
申请公布号
EP2593640(A1)
申请公布日期
2013.05.22
申请号
EP20110826272
申请日期
2011.09.16
申请人
GASFRAC ENERGY SERVICES INC.
发明人
ROBERTS, ROBBIE
分类号
E21B43/267
主分类号
E21B43/267
代理机构
代理人
主权项
地址
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