| 摘要 |
A system for use in borehole completion is provided and includes a perforating sub, a firing sub having a first port and an interior and including a firing assembly disposable within the interior and operably coupled to the perforating sub and a drilling fluid barrier, which is formed with a second port and is displaceable toward a position at which the first and second ports align to form a fluid path through the interior that is sufficiently pressurizable to actuate the firing assembly, a drop plug selectively engageable with the drilling fluid barrier to enable displacement thereof to the position in response to applied pressures and an isolation sub, into which the drop plug is receivable following disengagement thereof from the drilling fluid barrier.
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