FIELD: oil-and-gas production.
SUBSTANCE: ring-like termite device is used to withdraw pipe damaged section from trouble well head. With well head prepared for sealing, lifting mechanism is used to guide shut-off device on blowing jet. Said shut-off device is locked on blowing casing pipe to shut-off well head. Note here that said shut-off device is provided with weight bar to overcome blowing jet drag that has axial channel to blowing jet passage that may be shut-off after shut-off device is locked on well head. Note also that shut-off device bottom end is furnished with rings intended for guiding onto blowing well head while top end id equipped with remote-control lock and joint assembly with well fluid drainage channels.
EFFECT: preventing pollution of environments.
3 cl, 2 dwg
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Authors
Dates
2012-01-27—Published
2010-05-25—Filed