FIELD: oil and gas extractive industry.
SUBSTANCE: method for liquidation of seizure in well during drilling with use of flexible pipes includes determining place of seizure and tearing of lower tool. Tearing of lower tool is performed by activation of explosive substance in device included in assembly of lower portion of drilling column directly prior to drilling. It additionally has container with explosive substance and cable for transferring signal thereto. It is advisable to place safety bolts in lower portion of device.
EFFECT: higher efficiency.
2 cl, 2 dwg
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