| 摘要 |
<p>A method and system for introducing a fluid into a borehole (2), in which there is arranged a tubular drill string (3) including a drill bit (1), wherein the drill bit (1) is provided with a passageway (8, 20) between the interior (3a) of the drill string (3) and the borehole (2), and with a removable closure element (10) for selectively closing the passageway in the passageway in a closing position, and wherein there is further provided a fluid injection tool comprising a tool inlet and a tool outlet, the method comprising passing the fluid injection tool through the drill string to the closure element, and using it to remove the closure element from the closing position; passing the fluid injection tool outlet through the passageway, and introducing the fluid into the borehole from the interior of the drill string through fluid injection tool into the borehole.</p> |
