Corrosion inhibitor for acid stimulation systems

Abstract

An oil well being subjected to an acid stimulation may be treated with a corrosion inhibitor including an Ammonium Iodide Ion Source, a first carbonyl containing compound having a general formula: and a second carbonyl containing compound having the general formula: wherein R 1 is an alkyl or aromatic group, R 2 is a hydrogen, alkyl or aromatic group, and R 3 is a hydrogen or an alkyl group having from 1 to 6 carbons; and wherein the oil well being treated has zone being treated at a temperature of from about 90 to about 500° F. This abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b)

What is claimed is: 
     
         1 . A corrosion inhibitor composition comprising: an Ammonium Iodide Ion Source, a first carbonyl containing compound having a general formula: 
       
         
           
           
               
               
           
         
       
       and a second carbonyl containing compound having the general formula: 
       
         
           
           
               
               
           
         
       
       wherein, the first carbonyl containing compound and the second carbonyl containing compounds are different, R 1  is an alkyl or aromatic group, R 2  is a hydrogen, alkyl or aromatic group, and R 3  is a hydrogen or an alkyl group having from 1 to 6 carbons. 
     
     
         2 . The corrosion inhibitor composition of  claim 1 , wherein the Ammonium Iodide Ion Source is NH 4 I. 
     
     
         3 . The corrosion inhibitor composition of  claim 1 , wherein the Ammonium Iodide Ion Source includes an ammonium cation substituted with one or two alkyl groups having from 1 to 4 carbons. 
     
     
         4 . The corrosion inhibitor composition of  claim 3 , wherein the Ammonium Iodide Ion Source includes a substituted ammonium cation selected from the group consisting of methyl ammonium cation, ethyl ammonium cation, and combinations thereof. 
     
     
         5 . The corrosion inhibitor composition of  claim 1 , wherein the Ammonium Iodide Ion Source includes a compound that can disassociate into an iodide ion and an ammonium and/or substituted ammonium ion. 
     
     
         6 . The corrosion inhibitor composition of  claim 1 , wherein the Ammonium Iodide Ion Source includes two or more compounds that in combination can disassociate into an iodide ion and an ammonium and/or substituted ammonium ion. 
     
     
         7 . The corrosion inhibitor composition of  claim 1 , wherein the Ammonium Iodide Ion Source includes a source of I 3  anions. 
     
     
         8 . The corrosion inhibitor composition of  claim 1 , wherein R 1 , R 2 , and R 3  further comprise a moiety selected from the group consisting of a nitrogen moiety, oxygen moiety, phosphorous moiety, halogen moiety, and combinations thereof. 
     
     
         9 . The corrosion inhibitor composition of  claim 1 , wherein the first carbonyl containing compound is selected from the group consisting of ethyl butyrate, cinnamaldehyde, benzaldehyde, and combinations thereof. 
     
     
         10 . The corrosion inhibitor composition of  claim 9 , wherein the first carbonyl containing compound is cinnamaldehyde. 
     
     
         11 . The corrosion inhibitor composition of  claim 1 , wherein the second carbonyl containing compound is selected from the group consisting of acetaldehyde, formaldehyde, and combinations thereof. 
     
     
         12 . The corrosion inhibitor composition of  claim 11 , wherein the second carbonyl containing compound is formaldehyde. 
     
     
         13 . The corrosion inhibitor composition of  claim 1 , wherein the ratio of ammonium or substituted ammonium ions to iodide ions is from about 0.05:1 to about 10:1. 
     
     
         14 . The corrosion inhibitor composition of  claim 1 , wherein the ratio of ammonium or substituted ammonium ions to carbonyl containing compounds is from about 0.002:1 to about 0.017:1. 
     
     
         15 . The corrosion inhibitor composition of  claim 14 , wherein the ratio of ammonium or substituted ammonium ions to carbonyl containing compounds is from about 0.012:1 to about 0.014:1. 
     
     
         16 . The corrosion inhibitor composition of  claim 1 , wherein the ratio of first carbonyl containing compounds to second carbonyl containing compounds is from about 20:1 to about 1.5:1 
     
     
         17 . The corrosion inhibitor composition of  claim 16 , wherein the ratio of first carbonyl containing compounds to second carbonyl containing compounds is from about 5:1 to about 2:1 
     
     
         18 . A corrosion inhibitor composition comprising: an Ammonium Iodide Ion Source, a first carbonyl containing compound selected from the group consisting of ethyl butyrate, cinnamaldehyde, benzaldehyde, and combinations thereof; and a second carbonyl containing compound selected from the group consisting of acetaldehyde, formaldehyde, and combinations thereof; and wherein the first carbonyl containing compound and the second carbonyl containing compounds are different. 
     
     
         19 . The corrosion inhibitor of  claim 18 , wherein the Ammonium Iodide Ion Source includes an ammonium cation substituted with one or two alkyl groups having from 1 to 4 carbons. 
     
     
         20 . The corrosion of  claim 18 , wherein the ratio of ammonium or substituted ammonium ions to iodide ions is from about 0.05:1 to about 10:1.