GAS GENERATOR INCREASING YIELD OF OIL AND GAS WELLS Russian patent published in 2009 - IPC E21B43/263 

FIELD: oil and gas production.

SUBSTANCE: invention refers to oil and gas production, particularly to installations designed for breakdown and thermo-gas-chemical treatment of bottom-hole zone of reservoir with gaseous combustion products of hard fuel compositions in oil, gas and gas condensate wells. The gas generator for increasing yield of oil and gas wells consists of a block with a main charge of hard fuel composition and of a cylinder leak proof ignition block; a sealing element in form of an upper collapsible membrane sheared at preset pressure and a rod fixed with a circular collar are installed in the upper part of the ignition block. A sealing unit is located in the lower part of the installation. A temperature promoter is placed above the sealing unit. Gas fills space between the rod and the temperature promoter. A lower collapsible membrane with radiation notches is used as a lower sealing unit. The thickness of this membrane is determined by specified pressure created by the piston above the membrane at ignition block actuation. A thrust ring is installed over the membrane, while a round plate out of hard fuel composition is located under it; the round plate has diametre equal to internal diametre of the membrane and thickness exceeding depth of opening of radiation segments of the collapsible membrane. Threaded stops fix the upper and lower collapsible membranes.

EFFECT: thermo-gas-chemical effect onto bottom-hole zone of formation at treatment of low-yield and idle oil, gas and gas condensate wells at low, medium and big depth facilitating elimination of wells clogging with unburned residues of gas generator and high efficiency of actuation.

2 cl, 2 dwg