| 发明名称 |
УЗЕЛ СОПЛА И СПОСОБ БУРЕНИЯ ОТВЕРСТИЯ В ОБЪЕКТЕ |
| 摘要 |
A nozzle unit for generating an abrasive jet. The nozzle unit has a first nozzle connected to a pressurized carrier fluid supply; a mixing chamber in which the first nozzle discharges; and a second nozzle connected to the mixing chamber. An abrasive particle inlet discharges in the mixing chamber. A proportion of the cross sectional area of the first nozzle opening (A<SUB>1</SUB>) and the cross sectional area of the second nozzle opening (A<SUB>2</SUB>) is in a range of 0.50-1.0. |
| 申请公布号 |
RU2006117331(A) |
申请公布日期 |
2007.12.10 |
| 申请号 |
RU20060117331 |
申请日期 |
2004.10.20 |
| 申请人 |
ШЕЛЛ ИНТЕРНЭШНЛ РИСЕРЧ МААТСХАППИЙ Б.В. (NL) |
发明人 |
БЛАНГЕ Ян-Етте (NL) |
| 分类号 |
E21B7/18;E21B10/60;E21B10/61;E21B21/00;E21B41/00 |
主分类号 |
E21B7/18 |
| 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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