The invention discloses an
oil shale in-situ exploitation downhole ignition and heating device and a heating method. The ignition and heating device comprises a high-pressure oil gas injection
system,an ignition and heating measurement and
control system, a downhole
pipe column cable
system and a downhole igniting
system. When the ignition and heating device operates, firstly,
compressed air is injected in a well through a center channel of a dual-wall
drill pipe, and high-speed air flow is generated through an air
nozzle; and then
fuel oil is transported in the well through an annular hollowchannel between the inner wall and the outer wall of the dual-wall
drill pipe, the
fuel oil is atomized through a swirl
nozzle and fully mixed with the high-speed air flow, the
fuel oil is ignited under the heating action of a heating rod, and the heat generated by burning is used for heating an
oil shale layer.
Flame detectors monitor the burning conditions of downhole, a downhole packer enablesthe peak surface of the burning to extend and expand towards the
ground layer in the well for heating an
oil shale ore deposit. According to the oil shale in-situ exploitation downhole ignition and heating device and the heating method, the loss caused by energy pipeline transportation is reduced, and the burning efficiency of the fuel oil and the utilization ratio of the energy are improved greatly.