FIELD: oil and gas industry.
SUBSTANCE: well is filled with liquid nitrogen, tubing string is removed from the well and there performed is the control for freezing rocks and fluids adjacent to the well. After formation of shut-off plug in well and fluid fountain blocking the cement grouping is pumped into the zone above the well and pressure in well is maintained till its hardening.
EFFECT: elimination of emergency situations at fields.
3 dwg
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