FIELD: oil- and gas-producing and mining industries; equipment for remote opening of wells and mines suspended or exhausted and used as storage of oil, gas and water. SUBSTANCE: wellhead lock has gate secured to upper flange of wellbore. Cover is located under gate to form hollow between them. Cover is secured to upper flange of wellbore. Device for opening of wellbore is made in the form of source of high-pressure gases and pulse rocket engine installed between gate and cover. There are starting devices. One of flexible member is connected with gate, while the other, is connected with cover. Length of flexible member is larger than thickness of ground layer above well. Pulse rocket engine is secured to gate and its nozzle is directed to well inside. Nozzle axis is located at acute angle to well bore. Flexible member may be connected with cover via device for starting of pulse rocket engine. EFFECT: remote opening of well with minimal time consumed for the purpose, excluded negative effect of well contents on people. 2 cl, 1 dwg
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