Method of gaseous detonation fracturing of wells

Details Method of gaseous detonation fracturing of wells Method of gaseous detonation fracturing of wells

1981-03-12

1982-11-23

Leppink, James A.

Wells

Processes

With explosion or breaking container to implode

166 63, 166308, E21B 4326

Patent

active

043600620

ABSTRACT:
A portion of an earth well bore is sealed off, and a combustible mixture of gaseous oxidizer and fuel is introduced into a sealed length of the well bore and ignited with substantial momentary pressure rise, fracturing the earth formation adjacent the well bore to increase the flow of fluid from the surrounding earth into the well. A check valve intermediate of the sealed well bore length functions to segregate the well bore into upper and lower sealed portions. By igniting a fuel gas mixture within the first sealed length, there is created a momentary high pressure wave within the sealed volume that is transmitted as a standing pressure into the second sealed volume. Successive firings of combustible mixtures in the first sealed volume create a steady pressure in the second sealed volume nearly equivalent to the peak transitory pressures realized in the first sealed volume during the individual firings.

REFERENCES:
patent: 1861332 (1932-05-01), Waitz
patent: 2895555 (1959-07-01), De Priester
patent: 3616857 (1971-11-01), Pitkethly
patent: 3674093 (1972-07-01), Reese
patent: 3718088 (1973-02-01), Bearden et al.
patent: 3744579 (1973-07-01), Godfey
patent: 3848674 (1974-11-01), McColl
patent: 4049056 (1977-09-01), Godfrey
patent: 4103743 (1978-08-01), Paul

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