Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Reexamination Certificate
2007-06-12
2007-06-12
Hruskoci, Peter A. (Department: 1724)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
C134S025100, C134S040000, C175S066000, C210S710000, C210S728000, C510S188000, C510S380000, C510S406000
Reexamination Certificate
active
10874977
ABSTRACT:
An additive package for removing oil from solid material recovered from a well bore, e.g., drill cuttings and produced sand, is provided. The additive package includes an aqueous acidic solution containing a polymer substituted with an amino group, a halogenating agent, and optionally one or more surfactants. The polymer substituted with an amino group is preferably chitosan, and the halogenating agent is preferably a sodium hypochlorite solution. A product of the reaction of the polymer and the halogenating agent, in conjunction with the surfactant when present, is capable of causing the separation of at least a portion of the oil from the solid material.
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Dealy Sears T.
Reddy B. Raghava
Robb Ian D.
Conley & Rose, P.C.
Halliburton Energy Service,s Inc.
Hruskoci Peter A.
Roddy Craig W.
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