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:
Sep. 20, 2011
Filed:
Aug. 24, 2010
Grahame Nigel Taylor, Houston, TX (US);
Grahame Nigel Taylor, Houston, TX (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
Corrosion of metallic tubulars in an oil, gas or geothermal well may be inhibited by introducing into the well a dithiazine or dithiazine of the formula: wherein R is selected from the group consisting of a Cto Csaturated or unsaturated hydrocarbyl group or a Cto Cω-hydroxy saturated or unsaturated hydrocarbyl group; Ris selected from the group consisting of a C-Cstraight chain or branched alkyl group or a C-Carylalkyl; Ris selected from the group consisting of X-R-X, Rbeing a C-Calkyl group; and X is chlorine, bromine or iodine. The dithiazine may he isolated from a whole spent fluid formed by reaction of hydrogen sulfide and a triazine. Alternately, the whole spent fluid containing the dithiazine may be introduced into the well. The dithiazines of formulae (II) and (III) are quaternized derivatives of the dithiazine of formula (I). In addition, the dithiazine or whole spent fluid or quaternized dithiazine may be formulated with at least one component selected from alkyl, alkylaryl arylalkyl or arylamine quaternary salts; mono or polycyclic aromatic amine salts; imidazoline derivative or a quaternary salt thereof; a mono-, di- or trialkyl or alkylaryl phosphate ester; or a monomeric or oligomeric fatty acid.