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US 2006/0074269 A1Published application
Underground treatment of biowaste
AssigneeSunstone Corporation
InventorW. Hughes
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AssigneeSunstone Corporation
InventorW. Hughes
Estimating the term…
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.
A method of treatment of biowaste material which comprises the step of introducing said biowaste material in comminuted form into an injection well which extends from a ground level to and into a porous layer under the surface of the ground, the injection well having been drilled in two sections, an upper section and a lower section, the upper section of the injection well having been drilled previously using overbalanced drilling techniques, the lower section of the injection well having been drilled previously using underbalanced drilling techniques, the step of making a prior geological measurement of the pore throat size of the material in the porous layer where the biowaste material is to be injected, and the further step of comminuting the waste material to a particle size small enough to be received into the porous layer prior to the injection thereof into the injection well.
Dependencies are inferred from the claim text.