Underground treatment of biowaste

Details Underground treatment of biowaste Underground treatment of biowaste

2006-11-21

2006-11-21

Kreck, John (Department: 3673)

Hazardous or toxic waste destruction or containment

Containment

Geologic, marine, or extraterrestrial storage and containment

Reexamination Certificate

active

07137945

ABSTRACT:
A method of disposal of biowaste material which comprises drilling a first section of an injection well from the ground into a porous layer, drilling a second section of the injection well from a lower terminus of the first section of the injection well into the porous layer while drilling the same using underbalanced drilling techniques, drilling a first section of a production well from the ground to and into the porous layer, drilling a second section of the production well from the lower end of the first section thereof into the porous layer using underbalanced drilling conditions, making a geological measurement of the pore throat size and/or fracture aperture in the porous layer and treating the biowaste material introduced into the second section of the injection well by comminuting the same in a device such as a shear pump to an average particle size of approximately one-tenth to one-half, preferably one-seventh, of the average pore throat size in the porous layer, the measurement of the pore throat size and/or fracture aperture of the porous layer and the comminuting of the biowaste material being completed prior to the introduction of the biowaste material into the injection well.

REFERENCES:
patent: 3335798 (1967-08-01), Querin et al.
patent: 3724542 (1973-04-01), Hamilton
patent: 5961438 (1999-10-01), Ballantine et al.
patent: 6216463 (2001-04-01), Stewart
patent: 6491616 (2002-12-01), Bruno et al.
“Drilling Sideways—A review of horizontal Well technology and its domestic application” Apr. 1993, Energy Information Administration.
“Underbalanced Drilling” Oct. 2002, High Arctic Well Control Inc.

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