Stuck drills in frozen soil often result from ice-wedge effects, Буровая установка для бурения скважин на воду,
requiring three-level emergency responses:
-
Primary release:
Inject 30% methanol aqueous solution to melt ice around the drill pipe, while lifting the drill tool up and down.
-
Intermediate treatment:
Use a pulse shock tool with 2000N・m impact force to break the ice lock.
-
Advanced rescue:
Combine milling tools with liquid nitrogen freezing to make ice around the stuck section shrink and fall off.water well drilling rig
Data from an oilfield shows that using the three-level plan together can resolve 90%
of stuck drill accidents within 4
hours.
Буровая установка Bangxin