Urea Hydrochloride Compositions and Associated Methods

Abstract

Disclosed are methods for using a composition comprising HCl, urea, complex substituted keto-amine-hydrochloride, at least one alcohol selected from the group consisting of isopropyl alcohol and propargyl alcohol, an ethoxylate, and at least one ketone selected from the group consisting of methyl vinyl ketone, acetone, and acetophenone.

What is claimed is: 
     
         1 . A method for unsticking a drilling rig, the method comprising:
 unsticking a drilling rig with a composition comprising HCl, urea, complex substituted keto-amine-hydrochloride, at least one alcohol selected from the group consisting of isopropyl alcohol and propargyl alcohol, an ethoxylate, and at least one ketone selected from the group consisting of methyl vinyl ketone, acetone, and acetophenone.   
     
     
         2 . The method of  claim 1 , wherein the ethoxylate comprises an ethoxylated nonylphenol. 
     
     
         3 . The method of  claim 1 , further comprising diluting the composition by 20-90% by volume composition in water. 
     
     
         4 . The method of  claim 2 , wherein the composition comprises: HCl, 55 wt %; urea, 42 wt %; complex substituted keto-amine-hydrochloride, 0.067 wt %; isopropyl alcohol, 0.067 wt %; ethoxylated nonylphenol, 0.022 wt %; propargyl alcohol, 0.022 wt %; methyl vinyl ketone, 0.022 wt %; acetone, 0.022 wt %; and acetophenone, 0.0022 wt %. 
     
     
         5 . A method for acid fracture of at least one of an oil well and a gas well, the method comprising:
 acid fracturing with a composition comprising HCl, urea, complex substituted keto-amine-hydrochloride, at least one alcohol selected from the group consisting of isopropyl alcohol and propargyl alcohol, an ethoxylate, and at least one ketone selected from the group consisting of methyl vinyl ketone, acetone, and acetophenone.   
     
     
         6 . The method of  claim 5 , wherein the ethoxylate comprises an ethoxylated nonylphenol. 
     
     
         7 . The method of  claim 5 , further comprising diluting the composition by 20-90% by volume composition in water. 
     
     
         8 . The method of  claim 6 , wherein the composition comprises: HCl, 55 wt %; urea, 42 wt %; complex substituted keto-amine-hydrochloride, 0.067 wt %; isopropyl alcohol, 0.067 wt %; ethoxylated nonylphenol, 0.022 wt %; propargyl alcohol, 0.022 wt %; methyl vinyl ketone, 0.022 wt %; acetone, 0.022 wt %; and acetophenone, 0.0022 wt %. 
     
     
         9 . A method for spearhead acid squeeze soaking, the method comprising:
 spearhead acid squeeze soaking with a composition comprising HCl, urea, complex substituted keto-amine-hydrochloride, at least one alcohol selected from the group consisting of isopropyl alcohol and propargyl alcohol, an ethoxylate, and at least one ketone selected from the group consisting of methyl vinyl ketone, acetone, and acetophenone.   
     
     
         10 . The method of  claim 9 , wherein the ethoxylate comprises an ethoxylated nonylphenol. 
     
     
         11 . The method of  claim 9 , further comprising diluting the composition by 20-90% by volume composition in water. 
     
     
         12 . The method of  claim 10 , wherein the composition comprises: HCl, 55 wt %; urea, 42 wt %; complex substituted keto-amine-hydrochloride, 0.067 wt %; isopropyl alcohol, 0.067 wt %; ethoxylated nonylphenol, 0.022 wt %; propargyl alcohol, 0.022 wt %; methyl vinyl ketone, 0.022 wt %; acetone, 0.022 wt %; and acetophenone, 0.0022 wt %.