发明名称 |
Shock wave modification in percussion drilling apparatus and method |
摘要 |
Percussion drilling apparatus to affect at least one characteristic of a shock wave produced in a drill string. The apparatus comprises an elongate energy transmission adaptor 100 having a shock wave modification sleeve 110 configured with a free end 106 and an attachment end 107 projecting radially from an outer surface of the adaptor 100. |
申请公布号 |
EP2845989(A1) |
申请公布日期 |
2015.03.11 |
申请号 |
EP20130183520 |
申请日期 |
2013.09.09 |
申请人 |
SANDVIK INTELLECTUAL PROPERTY AB |
发明人 |
RINDESKÄR, ANDREAS;JANSSON, TOMAS |
分类号 |
E21B1/02;E21B17/042 |
主分类号 |
E21B1/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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