Plant husbandry – Process – Soil conditioning
Reexamination Certificate
2007-09-25
2007-09-25
Valenti, Andrea M. (Department: 3643)
Plant husbandry
Process
Soil conditioning
C435S289100, C405S128100, C175S066000, C047S05900R
Reexamination Certificate
active
11396978
ABSTRACT:
A method and apparatus for converting spent water-based drilling mud into fertile indigenous top soil at a well site or location. The fertile indigenous top soil is produced by the steps of:admixing, at a well site, effective amounts of spent water-based drilling mud, mature compost, organic fertilizer, and top soil from the well site to provide a mixture containing spent water-based drilling mud, from about 30 to about 150 volume percent mature compost, from about 5 to 20 volume percent organic fertilizer, and from about 5 to 20 volume percent top soil from the well site wherein each of the volume percents is based on the volume of the spent water-based drilling mud present in the mixture;stirring the mixture for a period of time effective to form a substantially homogenous mixture; anddrying the substantially homogenous mixture so as to provide fertile indigenous top soil possessing similar microbial and enzyme characteristics as the top soil at the well site.
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Dunlap Codding & Rogers
Valenti Andrea M.
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