The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 07, 1995
Filed:
Apr. 06, 1993
Applicant:
Inventors:
Joseph H Schmidt, Anchorage, AK (US);
Michael L Bill, Anchorage, AK (US);
Ahmed S Abou-Sayed, Sugarland, TX (US);
Assignee:
Atlantic Richfield Company, Los Angeles, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A62D / ; B09B / ;
U.S. Cl.
CPC ...
588250 ; 1663051 ; 175 66 ; 175206 ; 405 53 ; 405128 ;
Abstract
Slurries of particulate solids wastes are injected into a disaggregated earth formation through an injection well by predetermining the formation to have a compressive stress in a range of about 300 psi to 2500 psi, a porosity of at least about twenty percent (20%) and disposed between overburden and underburden layers which have a substantially lower permeability than the disposal zone. The disposal zone is disaggregated or 'liquified' by injecting substantially solids-free liquid followed by injection of the solids-laden slurry.