DEVICE FOR TREATING BOTTOM-HOLE ZONE OF BED Russian patent published in 1999 - IPC

FIELD: oil production industry. SUBSTANCE: this particularly relates to devices intended for increasing output capacity of wells by specific treatment of bottom-hole zone. Device has air chamber with atmospheric pressure, diaphragm, and receiving chamber with combustible solid composite material. Device is made up of two parts. First part faces towards air chamber and is formed from strong composition with low-gas emission at burning. Second part is formed from composition which generates gas in process of burning. Device is made with axis-symmetrical space which is filled with mixture of first and second parts. Space in first part of device is made at side which faces second part. Receiving chamber is made of light-weight elastic-plastic material which is destructed at burning of solid composite material located in it. Second part of combustible solid composite material is made with strength exceeding bottom-hole pressure. Aforesaid embodiment of device is efficient in functioning, simple in design and is of reduced cost to manufacture. EFFECT: higher efficiency. 2 cl, 1 dwg