Process for treating water-containing natural gas wells and natural gas storage wells
AssigneeWacker Chemie AG
InventorsWillibald Burger, Hans Mayer, Robert Schröck, Holger Wöltje, Bernward Deubzer, Hans Lautenschlager
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Abstract
The gas flow in water-containing natural gas wells and natural gas storage wells is improved if a homogeneous phase comprising a water-repellent, solvolysis-resistant active compound is injected into the water-bearing rock.
Claims9
A process for treating water-containing natural gas wells and natural gas storage wells in which a homogeneous phase comprising a water-repellant, solvolysis-resistant active compound is injected into the water-bearing rock, wherein said water repellant, solvolysis-resistant active compound is an organosilicon compound.
A process for treating water-containing natural gas wells and natural gas storage wells in which a homogeneous phase comprising a water-repellant, solvolysis-resistant active compound is injected into the water-bearing rock, wherein said water repellant, solvolysis-resistant active compound is a combination of solvent-soluble organosilicon compound dissolved in solvent, the organosilicon compound and solvent combinations selected from the group consisting of
- a) organosilicon compounds containing units of the formula A a R b SiO ( 4 - ( a + b ) ) 2
- where
- R denotes a hydrogen atom or a monovalent, divalent or trivalent hydrocarbon radical having 1 to 200 carbon atoms, which can be substituted by halogen, amino, ammonium, mercapto, acrylate or maleimide groups,
- A is —NR5R5
- R5 denotes a hydrogen atom or a hydrocarbon radical having 1 to 200 carbon atoms per radical, which can be interrupted by one or more groups of the formulae —C(O)—, —C(O)O—, —C(O)NR5—, —NR5—, —N+HR5—, —N+R5R5—, —O— or —S—, optimally substituted by F, Cl or Br,
- a is 0, 1 or 2,
- b is 1, 2, or 3,
- with the proviso that at least one A is present per molecule, the sum of a+b is less than 4 and the solvent is an alcohol, a glycol, or a glycol ether;
- b) organosilicon compounds containing units of the formula R b SiX c O ( 4 - ( b + c ) 2
- wherein R is as defined above,
- X is —OR1
- where
- R1 denotes a hydrogen atom or a hydrocarbon radical having 1 to 200 carbon atoms, optionally interrupted by one or more identical or different heteroatoms which are selected from the group consisting of O, S, N and P,
- or where X is —[OCH(CH3)CH2]e[OCH2CH2]f[O(CH2)4]gOR3
- where R3 is R1 or a radical of the formula —C(O)R1 or —Si(R1)3
- b is 0, 1, 2, or 3,
- c is 0, 1, or 2, and
- e, f, and g independently are integers from 0 to 200 with the proviso that the sum of e+f+g>1, and
- the sum of b and c is less than 4, with the proviso that there is at least one X per molecule, and a hydrocarbon solvent, and
- c) a methylhydrogen organopolysiloxane and a hydrocarbon solvent.
Dependencies are inferred from the claim text.