METHOD OF EMERGENCY killing wells with underwater collar locations AND DEVICE FOR ITS IMPLEMENTATION (VARIANTS)

摘要

FIELD: oil and gas industry.;SUBSTANCE: group of inventions refers to oil and gas production industry and can be used for emergency killing of wells. The method of well emergency killing with submarine location of mouth consists in pumping of cementing compound. Note that the cementing depth of the well area is determined in advance taking into account the well condition and pressure in the well. Injector attached to the tank with cementing compound and located inside the bag from flexible material is put on the bottom and inside the mouth of emergency well to the specified depth. The bag is filled with cementing compound; the compound is pumped from the tank through injector providing close contact of the bag outer surface with inner surface of the well. Note that injector is kept at the specified depth due to the weight of the whole structure filled with cementing compound, after pumping the pressure is maintained in the bag till the cementing compound is hardened. After cementing compound is hardened the fluid is pumped off or the well is killed.;EFFECT: method allows performing emergency killing of the well.;26 cl, 4 dwg