METHOD FOR REMOTE LASER IGNITION OF OPEN GAS WELL GUSHING Russian patent published in 2021 - IPC E21B41/00 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the oil and gas industry, namely to methods for remote ignition of a natural gas stream (an open gas fountain) in an accident at gas fields. The method for remote laser ignition of open gushing of a gas well consists in the fact that the ignition of open gushing of a gas well is carried out by the thermal effect of laser radiation on sand particles located in the gas fountain. The intensity of the laser radiation is set in the range (1.5÷2) ×10⁴ W/cm². In the process of igniting the open gushing of a gas well, the laser beam is automatically moved at a speed of 1 m/s along the axis of the preventer in the direction of the gas outflow from the cut-off area of the gas preventer with a change in the angle of the place α within 0÷45°. After each segment of the movement of 1 m, there is a pause in the movement of 18÷20 s.

EFFECT: reduction of the time of emergency ignition of natural gas while increasing the safety of emergency work.

1 cl, 2 dwg