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发明名称
Downhole piezoelectric devices
摘要
申请公布号
GB2474212(B)
申请公布日期
2012.04.25
申请号
GB20110002359
申请日期
2009.07.17
申请人
SCHLUMBERGER HOLDINGS LIMITED
发明人
COLIN LONGFIELD;DAVID WEI WANG;GARY L RYTLEWSKI
分类号
E21B34/06;E21B23/00;F04B47/06
主分类号
E21B34/06
代理机构
代理人
主权项
地址
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