Earth boring – well treating – and oil field chemistry – Preventing contaminant deposits in petroleum oil conduits
Reexamination Certificate
2009-01-28
2009-12-15
Kugel, Timothy J. (Department: 1796)
Earth boring, well treating, and oil field chemistry
Preventing contaminant deposits in petroleum oil conduits
C166S305100, C507S203000, C507S277000, C516S009000, C516S053000
Reexamination Certificate
active
07632785
ABSTRACT:
A method for cleaning oil wells to increase the flow of oil thereof by use of a unique aqueous cleaning emulsion comprising of water, hydrocarbon solvent, and detergent. This one step method provides for the simultaneously cleaning/removal of asphaltene and/or paraffin and scale. This method can be used alone or with the assistance of a wash tool which is a combination pressure and surge wash tool having a nipple assembly. A by-pass port is coupled to the nipple assembly and a diverter cup is coupled to the by-pass port. A plurality of pressure wash cups are positioned on the tool. A pressure wash port is located between the plurality of pressure wash cups and a pump shoe assembly is coupled to a bottom pressure wash cup.
REFERENCES:
patent: 4836286 (1989-06-01), Edwards
patent: 5152907 (1992-10-01), Dulaney et al.
patent: 6536523 (2003-03-01), Kresnyak et al.
Kugel Timothy J.
Mullen James J.
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