Corrosion inhibitor for wellbore applications

Patent 5565416 Issued on October 15, 1996. Estimated Expiration Date:

January 10, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3572439

3749554

3843547

Intermediate fluid systems for long distance oil displacement
Patent #: 3938591
Issued on: 02/17/1976
Inventor: Ossip , et al.

Method of making a set water-in-oil emulsion including a continuous resin phase
Patent #: 3981835
Issued on: 09/21/1976
Inventor: van Dyke

Controlling corrosion in gas-containing aqueous drilling fluid
Patent #: 4092252
Issued on: 05/30/1978
Inventor: Fischer, et al.

Foam drilling and workover in high temperature wells
Patent #: 4201678
Issued on: 05/06/1980
Inventor: Pye , et al.

Method for deoxygenation of water
Patent #: 4278635
Issued on: 07/14/1981
Inventor: Kerst

Use of improved hydroquinone oxygen scavenger in aqueous mediums
Patent #: 4279767
Issued on: 07/21/1981
Inventor: Muccitelli

Hydroquinone as an oxygen scavenger in an aqueous medium
Patent #: 4282111
Issued on: 08/04/1981
Inventor: Ciuba

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Inventor

Wu, Yulin

Assignee

Phillips Petroleum Company

Application

No. 179414 filed on 01/10/1994

US Classes:

507/103, Contains organic component507/102, Contains intended gaseous phase at entry into wellbore507/939CORROSION INHIBITOR

Examiners

Primary: Gibson, Sharon
Assistant: Fee, Valerie

Attorney, Agent or Firm

Haag; Gary L.

International Class

C09K 007/02

Abstract

This invention concerns a corrosion-inhibitor nominally comprised of a phenolic compound and a hydroxide-bearing compound capable of imparting a pH of 9 to water, the inclusion thereof in aerated water-based fluids and foams, and the use of these fluids in wellbore applications; particularly applications conducted at elevated temperatures.

Other References

Corrosin Inhibitors Betz Laboratories, Inc, 1973 pp. 106-109
Gray, G. R., Composition and Properties of Drilling and Completion Fluids, Fifth Edition (1988), pp. 72-77
Talati, J. D. and Modi, R. M., (1975) Br. Corros. J., vol. 10, No. 2, pp. 103-106
Talati, J. D. and Modi, R. M., (1977) Br. Corros. J., vol. 12, No. 3, pp. 180-184
Kirk-Othmer Encyclopedia of Chemical Technology, (1979), 3rd Ed., vol. 7
Lane, F., Northeast Oil Reporter, Sep. 1984, pp. 43-48
King, G., Petroleum Engineer International, Jul. 1982, pp. 52-60
Pardo, C. W., Andrus, T. S., Bibb, B. E., and Bibb, S. E., SPE 18844 (1989)
Petroleum Engineer, Dec. 1969, pp. 61-63, "Stable Foam Cuts Costs, Increases . . . "
Oil and Gas Journal, May 1973, pp. 72-74, "Continuous Coiled-Tubing Units and . . .