| 摘要 |
A system including a downhole device coupled to a pressure balanced setting tool. The setting tool may be pressure balanced to lock a setting piston in place as the system is deployed into a well. That is, in spite of downhole well pressures, no substantial differential may emerge between the setting piston and the annular space of the well adjacent the system. Thus, the setting piston may remain locked in place until triggered for setting. This may include breaching a rupture disc of another piston to disrupt hydraulic communication between the setting piston and the annular space. This allows subsequent triggering, for example through another breach of a rupture disc defining a volumetric chamber, to take place in a manner that allows stroking of the setting piston. In this way, the setting tool may be utilized to achieve setting of the downhole device. |
