APPARATUS FOR CHEMICAL IGNITION OF GAS-GENERATING FUEL DURING THERMOCHEMICAL PROCESSING OF OIL AND GAS WELLS Russian patent published in 2004 - IPC

FIELD: oil extraction, in particular, activation of marginal and standing oil and gas wells.

SUBSTANCE: apparatus has container made in the form of cylinder with two pistons. Container is filled with burning initiator. Two sleeves of different diameters are arranged in cylinder cavity in juxtaposed relation between pistons, said sleeves containing burning initiator components. Sleeve of smaller diameter is equipped with float and arranged in upper part of cavity. Upper piston applies force to smaller-diameter sleeve upon creation of excessive pressure. Sleeve of larger diameter is arranged in lower part of said cavity. Lower piston has core arranged in hermetically sealed relation, said core being made from gas-generating fuel. Upper part of core is hermetically sealed and located in aperture formed in bottom of sleeve of greater diameter. Its lower part is in contact with basic mass of gas-generating fuel arranged in cylinder cavity under lower piston.

EFFECT: simplified ignition of gas-generating fuel, increased safety of process owing to employment of increased hydraulic pressure instead of blasting equipment.

4 cl, 1 dwg