The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 05, 1991
Filed:
Oct. 17, 1989
Arthur Cizek, Houston, TX (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
An acid soluble mercury metal salt intensifier is provided to inhibit corrosion in conjunction with a corrosion inhibitor when a steel surface is present in an acid environment. The mercury metal salt may be a mercuric halide, such as mercuric chloride or may be a mercuric acetate, mercuric oxide, mercuric nitrate or mixtures of all of these. An acid soluble copper metal salt, such as cuprous halide, for example, cuprous chloride, copper acetate, cupric formate, cuprous nitrate and mixtures thereof, may also be present as a co-intensifier. In one application, the mercuric salt intensifier is used in a fluid for treatment of a subterranean well for the acid enhancement of production within the well by introduction of the fluid through a high alloy steel conduit positioned within the well. Methods of inhibiting acidic corrosion when steel surfaces are in an acid environment, particularly steel surfaces containing chrome, and methods of treating a subterranean well for enhanced production are also presented.