DEVICE FOR TREATMENT OF WELL BOTTOM-FACE ZONE Russian patent published in 1997 - IPC

FIELD: oil and gas production industry. SUBSTANCE: device has hermetic air chamber, diaphragm and receiving chamber. Placed in receiving chamber is combustible composite material consisting of two parts. First part is directed towards air chamber and is formed of strong composition with low gas-emission at burning. Second part is formed of composition which generates gas at burning. First part at side which faces second part has asymmetric hollow which is filled with mixture of first and second parts of material. Sealed openings are made in side surface of receiving chamber body on section where second part of combustible material is located. First and second parts of composite material are of definite composition, and mixture of first and second parts is proportioned at determined mass ratio. EFFECT: increased productive capacity of well. 3 cl, 1 dwg, 1 tbl