A method and system for treatment of flow-back and produced water from a hydrocarbon well in which fracturing operations are carried out using a phase separation and creating of positive charge in the water.
대표청구항▼
1. An improved water-assisted fracturing method employing water for enhancing the recovery of hydrocarbons from a subterranean formation having fracture zones comprising hydrocarbon bearing shale, while reducing the need for water disposal wells and for biocide additives in the water, the method com
1. An improved water-assisted fracturing method employing water for enhancing the recovery of hydrocarbons from a subterranean formation having fracture zones comprising hydrocarbon bearing shale, while reducing the need for water disposal wells and for biocide additives in the water, the method comprising: providing water to be injected into the subterranean formation, and prior to said injection, creating positive ions in the water by subjecting the water to a pulsed power ion generator using electromagnetic fields of influence;introducing fluid comprising the water containing positively charged ions into the formation fracture zones during and/or after fracturing the formation;removing from the formation produced fluids comprising liquid and condensed gaseous hydrocarbons, water, and slurries comprising solid particles;directing the produced fluids from the formation into a three phase, four material separator tank wherein the separator tank has: a top and a bottom; at least one inlet port for receiving into the tank the produced fluids; at least one outlet port at or near the top of the tank for removing from the tank hydrocarbon gases released from the produced fluids; at least one outlet port at or near the bottom of the tank for removing from the tank slurries suspending solid particles from the produced fluids; at least one side port for removing from the tank hydrocarbon liquids from the produced fluids; and at least one side port for removing water from the tank; wherein the at least one side port for removing the hydrocarbon liquids is positioned higher than the at least one side port for removing the water from the tank and wherein there is a desired set point in the tank for establishing a water/liquid hydrocarbon interface between the at least one side port for removing hydrocarbon liquids and the at least one side port for removing the water from the tank;having a system associated with the three phase, four material separator tank for establishing and automatically controlling a water/liquid hydrocarbon interface within the three phase, four material separator tank, wherein the system first establishes a water/liquid hydrocarbon interface in the three phase, four material separator tank; then measures the level of the water/liquid hydrocarbon interface within the three phase, four material separator tank, wherein a water/liquid hydrocarbon interface measurement signal results; compares the water/liquid hydrocarbon interface measurement to a set point, wherein a comparison signal results; reduces the flow of produced fluids into the three phase, four material separator tank when the comparison signal indicates the water/liquid hydrocarbon interface is above the set point, and increases the flow of produced fluids into the three phase, four material separator tank when the comparison signal indicates the water/liquid hydrocarbon interface is below the set point and/or supplements the flow of produced fluids into the three phase, four material separator tank when the comparison signal indicates the water/liquid hydrocarbon interface is below the set point by introducing into the three phase separator make-up water from a make-up water storage container or lagoon, so as to substantially maintain the level of the water/liquid hydrocarbon interface, so that hydrocarbon liquids are removed from the tank through the at least one side port for removing hydrocarbon liquids and water is removed from the three phase, four material separator tank through the at least one side port for removing water;allowing the produced fluids to separate in said system into gaseous hydrocarbons, liquid hydrocarbons, water, and aqueous slurry comprising suspended particulate solids;substantially maintaining the water/liquid hydrocarbon interface at a set point within the three phase, four material separator tank; andremoving water from the three phase, four material separator tank through the at least one side port for removing water, removing liquid hydrocarbons from the three phase, four material separator tank through the at least one side port for removing liquid hydrocarbons, removing gaseous hydrocarbons from the three phase, four material separator tank through the at least one outlet port at or near the top of the tank for removing gaseous hydrocarbons, and removing slurry suspending solid particulates from the three phase, four material separator tank through the at least one outlet port at or near the bottom of the tank for removing slurry suspending solid particulates, while substantially maintaining the water/hydrocarbon interface in the tank, and receiving into said tank additional produced fluids for separation;creating positive ions in the removed water by subjecting the water to a pulsed power ion generator using electromagnetic fields of influence, killing biocides in the water and reducing the need for biocides in the water; andintroducing the removed water containing positively charged ions, or fluid comprising said removed water containing positively charged ions, into the formation, reducing the need for disposal wells for the removed water and further enhancing hydrocarbon recovery from the formation. 2. The method of claim 1 wherein the ion generator is operated at a frequency in the range of about 80 to about 360 kHz. 3. The method of claim 1 wherein the water comprising positive ions prevents clogging in the fracture zones in the formation. 4. The method of claim 1 wherein the water comprising positive ions prevents scaling in any pipes associated with the method and which the water contacts. 5. The method of claim 1 wherein the system establishes a water/liquid hydrocarbon interface in the system associated with the three phase, four material separator tank using a diaphragm weir. 6. The method of claim 1 wherein the system measures the level of the water/liquid hydrocarbon interface in the system associated with the three phase, four material separator tank using a liquid level indicator controller-type sensor. 7. The method of claim 1 wherein the system compares the water/liquid hydrocarbon interface measurement signal to a set point using a continuous capacitance level transmitter. 8. The method of claim 1 wherein the system reduces and increases the flow into the three phase, four material separator tank using a turbine type flow meter and an inlet type control valve in-line with the input of the three phase, four material separator tank. 9. The method of claim 1 wherein the system further comprises controlling the water output of the three phase, four material separator tank by decreasing and increasing the flow exiting the three phase, four material separator tank. 10. The method of claim 9 wherein the system decreases and increases the flow exiting the three phase, four material separator tank using an orifice-type flow controller. 11. An improved water-assisted fracturing method employing water for enhancing the recovery of hydrocarbons from a subterranean formation having fracture zones comprising hydrocarbon bearing shale, while reducing the need for water disposal wells and for biocide additives in the water, the method comprising: providing water to be injected into the subterranean formation, and prior to said injection, creating positive ions in the water by subjecting the water to a pulsed power ion generator using electromagnetic fields of influence;introducing fluid comprising the water containing positively charged ions into the formation fracture zones during and/or after fracturing the formation;removing from the formation produced fluids comprising liquid and condensed gaseous hydrocarbons, water, and slurries comprising solid particles;directing the produced fluids from the formation into a three phase, four material separator tank wherein the separator tank has: a top and a bottom; at least one inlet port for receiving into the tank the produced fluids; at least one outlet port at or near the top of the tank for removing from the tank hydrocarbon gases released from the produced fluids; at least one outlet port at or near the bottom of the tank for removing from the tank slurries suspending solid particles from the produced fluids; at least one side port for removing from the tank hydrocarbon liquids from the produced fluids; and at least one side port for removing water from the tank; wherein the at least one side port for removing the hydrocarbon liquids is positioned higher than the at least one side port for removing the water from the tank and wherein there is a desired set point in the tank for establishing a water/liquid hydrocarbon interface between the at least one side port for removing hydrocarbon liquids and the at least one side port for removing water from the tank;having a system associated with the three phase, four material separator tank for establishing and automatically controlling a water/liquid hydrocarbon interface within the three phase, four material separator tank, wherein the system comprises: a diaphragm weir for first establishing a water/liquid hydrocarbon interface in the three phase, four material separator tank; a liquid level indicator controller-type sensor for measuring the level of the water/liquid hydrocarbon interface within the three phase, four material separator tank, wherein a water/liquid hydrocarbon interface measurement signal results; a continuous capacitance level transmitter for comparing the water/liquid hydrocarbon interface measurement to a set point, wherein a comparison signal results; a turbine type flow meter and an inlet type control valve in-line with the input of the three phase, four material separator tank for reducing the flow of produced fluids into the three phase, four material separator tank when the comparison signal indicates the water/liquid hydrocarbon interface is above the set point and for increasing the flow of produced fluids into the three phase, four material separator tank when the comparison signal indicates the water/liquid hydrocarbon interface is below the set point and/or supplementing the flow of produced fluids into the three phase, four material separator tank when the comparison signal indicates the water/liquid hydrocarbon interface is below the set point by introducing into the three phase separator make-up water from a make-up water storage container or lagoon, so as to substantially maintain the level of the water/liquid hydrocarbon interface, so that hydrocarbon liquids are removed from the tank through the at least one side port for removing hydrocarbon liquids and water is removed from the three phase, four material separator tank through the at least one side port for removing water;allowing the produced fluids to separate in said system into gaseous hydrocarbons, liquid hydrocarbons, water, and aqueous slurry comprising suspended particulate solids;substantially maintaining the water/liquid hydrocarbon interface at a set point within the three phase, four material separator tank; andremoving water from the three phase, four material separator tank through the at least one side port for removing water, removing liquid hydrocarbons from the three phase, four material separator tank through the at least one side port for removing liquid hydrocarbons, removing gaseous hydrocarbons from the three phase, four material separator tank through the at least one outlet port at or near the top of the tank for removing gaseous hydrocarbons, and removing slurry suspending solid particulates from the three phase, four material separator tank through the at least one outlet port at or near the bottom of the tank for removing slurry suspending solid particulates, while substantially maintaining the water/hydrocarbon interface in the tank, and receiving into said tank additional produced fluids for separation;creating positive ions in the removed water by subjecting the water to a pulsed power ion generator using electromagnetic fields of influence, killing biocides in the water and reducing the need for biocides in the water; andintroducing the removed water containing positively charged ions, or fluid comprising said removed water containing positively charged ions, into the formation, reducing the need for disposal wells for the removed water and further enhancing hydrocarbon recovery from the formation. 12. The method of claim 11 further comprising controlling the water output of the three phase, four material separator tank. 13. The method of claim 12 wherein an orifice-type flow controller decreases and increases the flow exiting the three phase, four material separator tank to control the water output of the three phase, four material separator tank. 14. The method of claim 11 wherein the water comprising positive ions prevents clogging in the fracture zones in the formation. 15. The method of claim 11 wherein the water comprising positive ions prevents scaling in any pipes associated with the method and which the water contacts. 16. The method of claim 11 wherein the ion generator is operated at a frequency in the range of about 80 to about 360 kHz.
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이 특허에 인용된 특허 (10)
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