| 摘要 |
<p>A modular hydrojetting tool (10) for fracturing well formations. The tool has a plurality of jetting modules (24, 26, 28). Each jetting module has a plurality of jetting nozzles (52, 70, 90) therein. A sleeve (78, 10) is disposed in each jetting module except the lowermost module (24), and each sleeve is moveable from a first position covering the jetting nozzles in the corresponding module to a second position covering the jetting nozzles in an adjacent module. Plugs (104, 96) may be pumped into the tool to move each sleeve sequentially, thereby operating the jetting modules sequentially.</p> |
