Method for stabilizing the gas flow in water-bearing natural gas deposits or reservoirs

A process for stabilizing the gas flow in gas wells and gas storage wells in water-bearing rock which deliver at least 50 l of water per 1000 m3 of natural gas produced, measured at standard temperature and pressure, said process comprising injecting a dispersion comprising the components

• A) an organosilicon compound as a disperse fraction,
• B) a hydrophilic water-miscible dispersion medium, and
• C) optionally, a dispersant,
• into the water-bearing rock, wherein said organosilicon compound (A) is an organosilane which contains radicals R and OR′ where
• R denotes monovalent hydrocarbon radicals having 1 to 18 carbon atoms, which are optionally substituted by halogen atoms, cyano, amino, alkylamino, quarternary ammonium, mercapto, epoxy, anhydrido, carboxylato, sulfonato, sulfato, phosphonato, isocyanato or polyoxyalkylene groups,
• R′ denotes hydrogen or monovalent hydrocarbon radicals having 1 to 30 carbon atoms optionally substituted by halogen atoms, cyano, amino, alkylamino, quarternary ammonium, mercapto, epoxy, anhydrido, carboxylato, sulfonato, sulfato, phosphonato, isocyanato or polyoxyalkylene groups.

A process for stabilizing the seas flow in gas wells and gas storage wells in water-bearing rock which deliver at least 50 l of water per 1000 m3 of natural gas produced, measured at standard temperature and pressure, said process comprising injecting a dispersion comprising the components

• A) an organosilicon compound as a disperse fraction,
• B) a hydrophilic water-miscible dispersion medium, and
• C) optionally, a dispersant,
• into the water-bearing rock, wherein said dispersants (C) comprise sulfonates, alkali metal salts of carboxylic acids, ammonium salts of carboxylic acids, alkyl polyglycol ethers, alkylaryl polyglycol ethers, quarternary alkyl- and alkylbenzylammonium salts, and mixtures thereof.

A process for stabilizing the gas flow in gas wells and gas storage wells in water-bearing rock which deliver at least 50 l of water per 1000 m3 of natural gas produced, measured at standard temperature and pressure, said process comprising injecting a dispersion comprising the components

• A) an organosilicon compound as a disperse fraction,
• B) a hydrophilic water-miscible dispersion medium, and
• C) optionally, a dispersant,
• into the water-bearing rock, wherein said organosilicon compound (A) is an organopolysiloxane comprising units of the general formulae (I) to (VII)
• R3SiO½ (I), R2SiO (II), RSiO{fraction (3/2)} (III), SiO{fraction (4/2)} (IV), R2(R′O)SiO½ (V), R(R′O)SiO (VI), R′OSiO{fraction (3/2)} (VII),
• where
• R denotes monovalent hydrocarbon radicals having 1 to 18 carbon atoms, which are optionally substituted by halogen atoms, cyano, amino, alkylamino, quarternary ammonium, mercapto, epoxy, anhydrido, carboxylato, sulfonato, sulfato, phosphonato, isocyanato or polyoxyalkylene groups.
• R′ denotes hydrogen or monovalent hydrocarbon radicals having 1 to 30 carbon atoms optionally substituted by halogen atoms, cyano, amino, alkylamino, quarternary ammonium, mercapto, epoxy, anhydrido, carboxylato, sulfonato, sulfato, phosphonato, isocyanato or polyoxyalkylene groups, further comprising an organosilane which contains radicals R and OR′, where
• R denotes monovalent hydrocarbon radicals having 1 to 18 carbon atoms, which are optionally substituted by halogen atoms, cyano, amino, alkylamino, quarternary ammonium, mercapto, epoxy, anhydrido, carboxylato, sulfonato, sulfato, phosphonato, isocyanato or polyoxyalkylene groups,
• R′ denotes hydrogen or monovalent hydrocarbon radicals having 1 to 30 carbon atoms optionally substituted by halogen atoms, cyano, amino, alkylamino, quarternary ammonium, mercapto, epoxy, anhydrido, carboxylato, sulfonato, sulfato, phosphonato, isocyanato or polyoxyalkylene groups.

A process for stabilizing the gas flow in gas wells and gas storage wells in water-bearing rock which deliver at least 50 l of water per 1000 m3 of natural gas produced, measured at standard temperature and pressure, said process comprising injecting a dispersion comprising the components

• A) an organosilicon compound as a disperse fraction,
• B) a hydrophilic water-miscible dispersion medium, and
• C) optionally, a dispersant,
• into the water-bearing rock, wherein said organosilicon compound (A) is an organopolysiloxane comprising units of the general formulae (I) to (VII)
• R3SiO½ (I), R2SiO (II), RSiO{fraction (3/2)} (III), SiO{fraction (4/2)} (IV), R2(R′O)SiO½ (V), R(R′O)SiO (VI), R′OSiO{fraction (3/2)} (VII),
• where
• R denotes monovalent hydrocarbon radicals having 1 to 18 carbon atoms, which are optionally substituted by halogen atoms, cyano, amino, alkylamino, quarternary ammonium, mercapto, epoxy, anhydrido, carboxylato, sulfonato, sulfato, phosphonato, isocyanato or polyoxyalkylene groups,
• R′ denotes hydrogen or monovalent hydrocarbon radicals having 1 to 30 carbon atoms optionally substituted by halogen atoms, cyano, amino, alkylamino, quarternary ammonium, mercapto, epoxy anhydrido, carboxylato, sulfonato, sulfato, phosphonato, isocyanato or polyoxyalkylene groups, wherein said dispersants (C) comprise sulfonates, alkali metal salts of carboxylic acids, ammonium salts of carboxylic acids, alkyl polyglycol ethers, alkylaryl polyglycol ethers, quarternary alkyl- and alkylbenzylammonium salts, and mixtures thereof.

A process for stabilizing the gas flow in gas wells and gas storage wells in water-bearing rock which deliver at least 50 l of water per 1000 m3 of natural gas produced measured at standard temperature and pressure, said process comprising injecting a dispersion comprising the components

• A) an organosilicon compound as a disperse fraction
• B) a hydrophilic water-miscible dispersion medium, and
• C) optionally, a dispersant,
• into the water-bearing rock, wherein said hydrophilic water-miscible dispersion medium (B) comprises one or more of aliphatic monoalcohols, lycols ethers, dimethylformamide and water wherein said dispersants (C) comprise sulfonates, alkali metal salts of carboxylic acids, ammonium salts of carboxylic acids, alkyl polyglycol ethers, alkylaryl polyglycol ethers, quarternary alkyl- and alkylbenzylammonium salts, and mixtures thereof.