Flexible conduit for effecting lateral channelling in coal or oi

Details Flexible conduit for effecting lateral channelling in coal or oi Flexible conduit for effecting lateral channelling in coal or oi

1977-11-23

1979-09-25

Purser, Ernest R.

Boring or penetrating the earth

Boring by directly applying heat to fluidize or comminute

Combustion of the formation material

175 61, 175 67, 175 77, 166 50, 138120, 285114, E21C 3716, E21C 4300, F16L 1114

Patent

active

041687523

ABSTRACT:
There is provided in accordance with the invention apparatus and a method for boring holes through carbonaceous deposits.
The method involves the step of introducing combustion-supporting gases such as air under pressure through the apparatus installed in a well hole opposite the area to be bored. The apparatus comprises inner and outer flexible tubes with flexible, jointed armour and a directional nozzle which permits it to be bent and change attitude as necessary. The adjacent carbonaceous interface after being ignited is maintained in this condition by the combustion-supporting gas which is supplied under pressure. As the combustion proceeds, the pressure expels the combustion products and the gas injector is advanced along the channel it has previously formed.

REFERENCES:
patent: 2141880 (1938-12-01), Satre
patent: 2156587 (1939-05-01), Hatteberg
patent: 2198016 (1940-04-01), Rogers et al.
patent: 2258001 (1941-10-01), Chamberlain
patent: 2271005 (1942-01-01), Grebe
patent: 2758612 (1956-08-01), Zaleski
patent: 2788956 (1957-04-01), Pevere et al.
patent: 2822158 (1958-02-01), Brinton
patent: 3301940 (1967-01-01), Rischard et al.
patent: 3563606 (1971-02-01), Sears
patent: 3908703 (1975-09-01), Bournazel et al.

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