US 12,747,386 B2 · Surface treatment compositions used for carbon sequestration, hydraulic fracturing and increasing oil production from a subterranean formation, and method of hydraulic fracturing

Abstract

The present invention provides methods of increasing oil production, hydraulic fracturing, and carbon sequestration in subterranean formations. Surface treatment compositions used in these methods are also disclosed. The methods comprise: (1) injecting into the well the surface treatment composition with or without a pretreatment; (2) allowing one or more components of the surface treatment composition to chemically bond to a surface of the subterranean formation; and (3) removing oil from the well or from one or more production wells that are in fluid communication with the well. The surface treatment composition comprises (a) a fluid comprising a hydrocarbon liquid, a supercritical fluid, and/or a liquefied gas; and (b) a surface modifying component. The component (b) comprises (i) an organometallic compound and (ii) an organosilane having halogen substituents. In carbon sequestration, the fluid (a) contains carbon dioxide.

Claims19

Dependent claims

A method of hydraulic fracturing in a siliceous or metal (M) oxide-containing subterranean formation penetrated by a well, the method comprising:

(1) injecting into the well a surface treatment composition at an injection pressure wherein the surface treatment composition comprises:
(a) a fluid comprising a liquefied gas that has a boiling point between −165° C. and 0° C. at atmospheric pressure;
and
(b) a surface modifying component comprising:
(i) an organometallic compound comprising tantalum, titanium, zirconium, lanthanum, hafnium, and/or tungsten, wherein the organometallic compound (i) is present in the surface treatment composition in an amount of 0.005 to 2.5 percent by weight, based on the total weight of the surface treatment composition;
and
(ii) an organosilane having halogen substituents, wherein the organosilane (ii) is present in the surface treatment composition in an amount of 0.005 to 25 percent by weight, based on the total weight of the surface treatment composition;
(2) allowing one or more components of the surface treatment composition to chemically bond to a surface of the subterranean formation;
and
(3) removing oil from the well or from one or more production wells that are in fluid communication with the well.

7 more elements

A method of hydraulic fracturing in a siliceous or metal (M) oxide-containing subterranean formation penetrated by a well, the method comprising:

(1) injecting into the well a surface treatment composition at an injection pressure wherein the surface treatment composition comprises:
(a) a fluid comprising a liquefied gas that has a boiling point between −165° C. and 0° C. at atmospheric pressure, and wherein the fluid (a) comprises at least one of LNG, Y-GRADE NGL, CO2, methane, ethane, propane, n-butane, and isobutane;
and
(b) a surface modifying component comprising:
(i) an organometallic compound comprising tantalum, titanium, zirconium, lanthanum, hafnium, and/or tungsten, wherein the organometallic compound (i) is present in the surface treatment composition in an amount of 0.005 to 2.5 percent by weight, based on the total weight of the surface treatment composition;
and
(ii) an organosilane having halogen substituents, wherein the organosilane (ii) is present in the surface treatment composition in an amount of 0.005 to 25 percent by weight, based on the total weight of the surface treatment composition;
(2) allowing one or more components of the surface treatment composition to chemically bond to a surface of the subterranean formation;
and
(3) removing oil from the well or from one or more production wells that are in fluid communication with the well.

7 more elements

Dependencies are inferred from the claim text.

Surface treatment compositions used for carbon sequestration, hydraulic fracturing and increasing oil production from a subterranean formation, and method of hydraulic fracturing

Life of this patent

Surface treatment compositions used for carbon sequestration, hydraulic fracturing and increasing oil production from a subterranean formation, and method of hydraulic fracturing

Life of this patent

Abstract

Claims19