Henna Corrosion Inhibitor for Acid in a Well

Abstract

A method of treating a portion of a well including the steps of: (A) forming a fluid comprising: (i) an aqueous liquid phase; and (ii) a corrosion inhibitor selected from the group consisting of: (a) the leaves of henna, jewelweed, or any combination thereof; (b) an extract of the leaves of henna, jewelweed, or any combination thereof; (c) a plant source of a hydroxynaphthoquinone; (d) a hydroxynaphthoquinone; and (e) any combination an any of the foregoing; and (B) introducing the fluid into the portion of the well.

1 . A method of treating a portion of a well, the method comprising the steps of:
 (A) forming a fluid comprising:
 (i) an aqueous liquid phase; and 
 (ii) a corrosion inhibitor selected from the group consisting of:
 (a) the leaves of henna, jewelweed, or any combination thereof; 
 (b) an extract of the leaves of henna, jewelweed, or any combination thereof; 
 (c) a plant source of a hydroxynaphthoquinone; 
 (d) a hydroxynaphthoquinone; and 
 (e) any combination an any of the foregoing; and 
 
   (B) introducing the fluid into the portion of the well.   
     
     
         2 . The method according to  claim 1 , wherein the fluid is a water-based fluid. 
     
     
         3 . The method according to  claim 1 , wherein the aqueous liquid phase comprises a water-soluble inorganic salt. 
     
     
         4 . The method according to  claim 1 , wherein the aqueous liquid phase comprises one or more salts selected from the group consisting of alkali metal halides. 
     
     
         5 . The method according to  claim 1 , wherein the aqueous liquid phase additionally comprises an acid such that an initial pH is less than about 4. 
     
     
         6 . The method according to  claim 5 , wherein the acid comprises HCl. 
     
     
         7 . The method according to  claim 1 , wherein the aqueous liquid phase additionally comprises a delayed-release acid. 
     
     
         8 . The method according to  claim 7 , wherein the delayed-release acid comprises a carboxylate ester. 
     
     
         9 . The method according to  claim 7 , wherein the aqueous liquid phase at the time of forming the treatment fluid has a pH greater than about 6. 
     
     
         10 . The method according to  claim 7 , additionally comprising a fluid-loss control agent. 
     
     
         11 . The method according to  claim 10 , wherein the fluid-loss control agent is insoluble in water at a pH greater than about 6. 
     
     
         12 . The method according to  claim 10 , wherein the fluid-loss control agent is selected from the group consisting of calcium carbonate, magnesium carbonate, and any combination thereof. 
     
     
         13 . The method according to  claim 1 , wherein the hydroxynaphthoquinone is selected from the group consisting of: 2-hydroxy-1,4-napthoquinone; 4-hydroxy-1,2-napthoquinone; and any combination thereof. 
     
     
         14 . The method according to  claim 1 , wherein the extract is in particulate form when being mixed in the step of forming the fluid. 
     
     
         15 . The method according to  claim 1 , wherein the extract is in a liquid solution form when being mixed in the step of forming the fluid. 
     
     
         16 . The method according to  claim 1 , wherein the corrosion inhibitor is a concentration in the range of from about 0.01% wt/vol to about 20% wt/vol of the aqueous liquid phase. 
     
     
         17 . The method according to  claim 1 , wherein the fluid additionally comprises a corrosion inhibitor intensifier. 
     
     
         18 . The method according to  claim 17 , wherein the corrosion inhibitor intensifier is selected from the group consisting of: potassium iodide, cuprous chloride, antimony-based compounds, bismuth-based compounds, and any combination thereof. 
     
     
         19 . The method according to  claim 1 , wherein the fluid additionally comprises a viscosity-increasing agent. 
     
     
         20 . The method according to  claim 1 , wherein a design temperature is at a temperature of at least 200° F.