Corrosion inhibitor composition, transport fluid mixture, method for charging corrosion inhibitor composition, winze, and pipeline

Abstract

A corrosion inhibitor composition contains an organic long-chain compound having a polar group and hydrophobic silica. In a method for charging a corrosion inhibitor composition, the corrosion inhibitor composition constituted of a first corrosion inhibitor composition containing an organic long-chain compound having a polar group and a second corrosion inhibitor composition containing hydrophobic silica is charged into a fluid mixture including at least one hydrocarbon fluid selected from the group consisting of a liquid-phase hydrocarbon fluid and a gas-phase hydrocarbon fluid and water.

1 . A corrosion inhibitor composition comprising:
 an organic long-chain compound having a polar group; and   hydrophobic silica.   
     
     
         2 . The corrosion inhibitor composition according to  claim 1 , further comprising:
 an organic solvent.   
     
     
         3 . A transport fluid mixture comprising:
 at least one hydrocarbon fluid selected from the group consisting of a liquid-phase hydrocarbon fluid and a gas-phase hydrocarbon fluid;   water; and   a corrosion inhibitor composition containing an organic long-chain compound having a polar group and hydrophobic silica.   
     
     
         4 . The transport fluid mixture according to  claim 3 ,
 wherein the organic long-chain compound having a polar group has one or more selected from nitrogen, oxygen, and sulfur.   
     
     
         5 . The transport fluid mixture according to  claim 3 , wherein the corrosion inhibitor composition further includes an organic solvent. 
     
     
         6 . The transport fluid mixture according to  claim 5 , wherein the organic solvent is a liquid phase at a temperature and a pressure that are transport conditions of the transport fluid mixture. 
     
     
         7 . The transport fluid mixture according to  claim 5 , wherein the organic solvent is an aromatic compound. 
     
     
         8 . A method for charging a corrosion inhibitor composition comprising:
 a corrosion inhibitor composition charging step of charging a corrosion inhibitor composition into a fluid mixture including at least one hydrocarbon fluid selected from the group consisting of a liquid-phase hydrocarbon fluid and a gas-phase hydrocarbon fluid and water,   wherein the corrosion inhibitor composition is constituted of a first corrosion inhibitor composition containing an organic long-chain compound having a polar group and a second corrosion inhibitor composition containing hydrophobic silica.   
     
     
         9 . The method for charging the corrosion inhibitor composition according to  claim 8 , wherein the second corrosion inhibitor composition further includes an organic solvent. 
     
     
         10 . The method for charging the corrosion inhibitor composition according to  claim 8 , wherein, in the corrosion inhibitor composition charging step, the first corrosion inhibitor composition and the second corrosion inhibitor composition are separately charged into the fluid mixture. 
     
     
         11 . A winze comprising:
 a tubing having an anticorrosive coating formed on an inner surface thereof by the corrosion inhibitor composition according to  claim 1 .   
     
     
         12 . A pipeline comprising:
 a transport pipe having an anticorrosive coating formed on an inner surface thereof by the corrosion inhibitor composition according to  claim 1 .