Method for maintaining the permeability of fines-containing formations

Claim 1

A method for treating subterranean formations which contain formation fines to minimize impairment of formation permeability due to the presence of formation fines comprising, without drying the said formation, injecting into the said formation in an amount sufficient to maintain the rate of flow of a liquid through the formation at a relatively constant rate a composition consisting essentially of an organosilane having the formula: ##STR8## wherein X is a halogen, R 1 is an organic radical having from 1 to 50 carbon atoms, R 2 and R 3 are the same or different halogens or organic radicals having from 1 to 50 carbon atoms; or an ester of an organosilane having the formula: ##STR9## wherein R 4 , R 5 and R 6 are independently selected from hydrogen and organic radicals having from 1 to 50 carbon atoms and R 7 is an organic radical having from 1 to 50 carbon atoms.

Claim 2

A method for treating subterranean formations which contain formation fines to minimize impairment of formation permeability due to the presence of formation fines comprising, without drying the said formation, injecting into the said formation in an amount sufficient to maintain the rate of flow of a liquid through the formation at a relatively constant rate a composition consisting essentially of an organosilane having the formula: ##STR8## wherein X is a halogen, R 1 is an organic radical having from 1 to 50 carbon atoms, R 2 and R 3 are the same or different halogens or organic radicals having from 1 to 50 carbon atoms; or an ester of an organosilane having the formula: ##STR9## wherein R 4 , R 5 and R 6 are independently selected from hydrogen and organic radicals having from 1 to 50 carbon atoms and R 7 is an organic radical having from 1 to 50 carbon atoms.

Claim 4

A method for treating subterranean formations which contain formation fines to minimize impairment of formation permeability due to the presence of the formation fines comprising, without drying the said formation, injecting into the said formation in an amount sufficient to maintain the rate of flow of a liquid through the formation at a relatively constant rate a composition consisting essentially of an organosilane having the formula: ##STR10## wherein X is a halogen selected from the group consisting of chlorine, bromine and iodine, R 1 is an alkyl, alkenyl or aryl group having from 1 to 18 carbon atoms and R 2 and R 3 are the same or different halogens, or alkyl, alkenyl or aryl group having from 1 to 18 carbon atoms; or an ester of an organosilane having the formula: ##STR11## wherein R 4 , R 5 and R 6 are independently selected from hydrogen, amine, alkyl, alkenyl, aryl and carbhydroyloxy groups having from 1 to 18 carbon atoms, with at least one of the R 4 , R 5 and R 6 groups not being hydrogen, and R 7 is selected from an amine, alkyl, alkenyl and aryl group having from 1 to 18 carbon atoms.

Claim 5

A method for treating subterranean formations which contain formation fines to minimize impairment of formation permeability due to the presence of the formation fines comprising, without drying the said formation, injecting into the said formation in an amount sufficient to maintain the rate of flow of a liquid through the formation at a relatively constant rate a composition consisting essentially of an organosilane having the formula: ##STR10## wherein X is a halogen selected from the group consisting of chlorine, bromine and iodine, R 1 is an alkyl, alkenyl or aryl group having from 1 to 18 carbon atoms and R 2 and R 3 are the same or different halogens, or alkyl, alkenyl or aryl group having from 1 to 18 carbon atoms; or an ester of an organosilane having the formula: ##STR11## wherein R 4 , R 5 and R 6 are independently selected from hydrogen, amine, alkyl, alkenyl, aryl and carbhydroyloxy groups having from 1 to 18 carbon atoms, with at least one of the R 4 , R 5 and R 6 groups not being hydrogen, and R 7 is selected from an amine, alkyl, alkenyl and aryl group having from 1 to 18 carbon atoms.

Claim 16

A method for treating a subterranean formation which contains formation fines, to minimize impairment of formation permeability due to the presence of the formation fines, comprising, without drying said formation: (a) injecting into said formation in an amount sufficient to maintain the rate of flow of a liquid through the formation at a relatively constant rate a composition consisting essentially of an organosilane having the formula: ##STR12## wherein X is a halogen, R 1 is an organic radical having from 1 to 50 carbon atoms, and R 2 and R 3 are the same or different halogens or organic radicals having from 1 to 50 carbon atoms; or an ester of an organosilane having the formula: ##STR13## wherein R 4 , R 5 and R 6 are independently selected from hydrogen and organic radicals having from 1 to 50 carbon atoms and R 7 is an organic radical having from 1 to 50 carbon atoms; and (b) placing the well in service without first injecting water into the formation.

Claim 17

A method for treating a subterranean formation which contains formation fines, to minimize impairment of formation permeability due to the presence of the formation fines, comprising, without drying said formation: (a) injecting into said formation in an amount sufficient to maintain the rate of flow of a liquid through the formation at a relatively constant rate a composition consisting essentially of an organosilane having the formula: ##STR12## wherein X is a halogen, R 1 is an organic radical having from 1 to 50 carbon atoms, and R 2 and R 3 are the same or different halogens or organic radicals having from 1 to 50 carbon atoms; or an ester of an organosilane having the formula: ##STR13## wherein R 4 , R 5 and R 6 are independently selected from hydrogen and organic radicals having from 1 to 50 carbon atoms and R 7 is an organic radical having from 1 to 50 carbon atoms; and (b) placing the well in service without first injecting water into the formation.

Claim 19

A method for treating a subterranean formation which contains formation fines, to minimize impairment of formation permeability due to the presence of the formation fines, comprising, without drying said formation; (a) injecting into said formation in an amount sufficient to maintain the rate of flow of a fluid through the formation at a relatively constant rate a composition consisting essentially of an organosilane having the formula: ##STR14## wherein X is a halogen selected from the group consisting of chlorine, bromine and iodine, R 1 is an alkyl, alkenyl or aryl group having from 1 to 18 carbon atoms and R 2 and R 3 are the same or different halogens, or alkyl, alkenyl or aryl group having from 1 to 18 carbon atoms; or an ester of an organosilane having the formula: ##STR15## wherein R 4 , R 5 and R 6 are independently selected from hydrogen, amine, alkyl, alkenyl, aryl and carbhydryloxy groups having from 1 to 18 carbon atoms, with at least one of the R 4 , R 5 and R 6 groups not being hydrogen, and R 7 is selected from an amine, alkyl, alkenyl and aryl group having from 1 to 18 carbon atoms; and (b) placing the well in service without first injecting water into the formation.

Claim 20

A method for treating a subterranean formation which contains formation fines, to minimize impairment of formation permeability due to the presence of the formation fines, comprising, without drying said formation; (a) injecting into said formation in an amount sufficient to maintain the rate of flow of a fluid through the formation at a relatively constant rate a composition consisting essentially of an organosilane having the formula: ##STR14## wherein X is a halogen selected from the group consisting of chlorine, bromine and iodine, R 1 is an alkyl, alkenyl or aryl group having from 1 to 18 carbon atoms and R 2 and R 3 are the same or different halogens, or alkyl, alkenyl or aryl group having from 1 to 18 carbon atoms; or an ester of an organosilane having the formula: ##STR15## wherein R 4 , R 5 and R 6 are independently selected from hydrogen, amine, alkyl, alkenyl, aryl and carbhydryloxy groups having from 1 to 18 carbon atoms, with at least one of the R 4 , R 5 and R 6 groups not being hydrogen, and R 7 is selected from an amine, alkyl, alkenyl and aryl group having from 1 to 18 carbon atoms; and (b) placing the well in service without first injecting water into the formation.

Claim 31

A method for treating a subterranean formation which contains formation fines, to minimize impairment of formation permeability due to the presence of the formation fines, comprising, without drying said formation, injecting into said formation in an amount sufficient to maintain the rate of flow of a fluid through the formation at a relatively constant rate a composition consisting essentially of an ester of an organosilane having the formula: ##STR16## wherein R 4 , R 5 and R 6 are independently selected from hydrogen, amine, alkyl, alkenyl, aryl and carbhydryloxy groups having from 1 to 18 carbon atoms, with at least one of the R 4 , R 5 and R 6 groups not being hydrogen, and R 7 is selected from an amine, alkyl, alkenyl and aryl group having from 1 to 18 carbon atoms.

Claim 32

A method for treating a subterranean formation which contains formation fines, to minimize impairment of formation permeability due to the presence of the formation fines, comprising, without drying said formation, injecting into said formation in an amount sufficient to maintain the rate of flow of a fluid through the formation at a relatively constant rate a composition consisting essentially of an ester of an organosilane having the formula: ##STR16## wherein R 4 , R 5 and R 6 are independently selected from hydrogen, amine, alkyl, alkenyl, aryl and carbhydryloxy groups having from 1 to 18 carbon atoms, with at least one of the R 4 , R 5 and R 6 groups not being hydrogen, and R 7 is selected from an amine, alkyl, alkenyl and aryl group having from 1 to 18 carbon atoms.

Claim 42

A method for treating a subterranean formation which contains formation fines, to minimize impairment of formation permeability due to the the presence of the formation fines, comprising, without drying said formation, injecting into said formation about 0.5 to 100 gallons per vertical foot of formation to be treated a composition consisting essentially of γ-aminopropyltriethoxysilane.

Claim 43

A method for treating a subterranean formation which contains formation fines, to minimize impairment of formation permeability due to the the presence of the formation fines, comprising, without drying said formation, injecting into said formation about 0.5 to 100 gallons per vertical foot of formation to be treated a composition consisting essentially of γ-aminopropyltriethoxysilane.