Class 507/102 - Contains intended gaseous phase at entry into wellbore

Subclass of Class 507 - Earth boring, well treating, and oil field chemistry
Definition: Compositions which have an intentional gaseous phase present
No. of patents: 82
Last issue date: 11/30/2010

Number	Title	Issue Date
3953338	Foam well cleanout using oligomeric sulfonic acids Organic disulfonic acids are produced by heating a sulfonate monomer at a temperature above 110°C. in the substantial absence of water. Olefin sulfonation product mixtures, hydroxyalkane sulfonic acids, alkane sultones, alkene sulfonic acids and mixtures...	04/27/1976
3951823	Foam well cleanout using oligomeric sulfonates Organic disulfonic acids are produced by heating a sulfonate monomer at a temperature above 110°C. in the substantial absence of water. Olefin sulfonation product mixtures, hydroxyalkane sulfonic acids, alkane sultones, alkene sulfonic acids and mixtures...	04/20/1976

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