System and method for processing a slurry

• US 10,487,600 B2
• Filed: 07/13/2015
• Issued: 11/26/2019
• Est. Priority Date: 11/04/2011
• Status: Active Grant

• Current Assignee: Flowback Fluids, LLC.
• Original Assignee: Flowback Fluids, LLC.
• Inventors: Culver, Terry Gordon
• Primary Examiner(s): Clemente, Robert
• Assistant Examiner(s): Varma, Akash K
• Application Number:
  US14/798,059
• Publication Number:
  US 20170016288A1
• Time in Patent Office: 1,597 Days
• Field of Search: 210758
• CPC Class Codes: B01D 21/267 by using a cyclone
• CPC Class Codes: B03B 5/34 Applications of hydrocyclones
• CPC Class Codes: C02F 1/38 by centrifugal separation
• CPC Class Codes: C02F 1/56 Macromolecular compounds
• CPC Class Codes: C02F 1/72 by oxidation C02F1/4672 takes precedence
• CPC Class Codes: C02F 1/722 Oxidation by peroxides
• CPC Class Codes: C02F 2103/10 from quarries or from mining activities
• CPC Class Codes: E21B 21/065 Separating solids from drilling fluids

Abstract

A system and method for separating two or more materials, such as a solid from a liquid, or a solid from a slurry, are provided. An exemplary system and method for separating drill cuttings from drilling fluids are provided, as well as a system and method of processing such separated drill cuttings. In another implementation, a system and method is provided for separating gold (or another mineral, element, or solid) from a slurry or liquid that includes mining cuttings.

Claims

1. A system for processing a mineral slurry that includes one or more minerals that were recovered at least partially from a petroleum geologic formation, the system comprising:

a receiving vessel operable to receive the mineral slurry that includes the one or more minerals, the receiving vessel comprising a first chamber of the receiving vessel and a second chamber of the receiving vessel, the first chamber and the second chamber at least partially defined by a dividing wall inside the receiving vessel and shared by both the first and the second chambers, the dividing wall positioned within the receiving vessel, the first chamber and the second chamber at least partially separated by the dividing wall, the receiving vessel operable to provide at least a portion of the mineral slurry from the first chamber at one or more output openings of the first chamber;

a pump configured to pump at least a portion of the mineral slurry provided from the one or more output openings of the first chamber of the receiving vessel; and

a separator configured to receive at least a portion of the pumped mineral slurry, and to separate at least a portion of the one or more minerals of the pumped mineral slurry that were recovered at least partially from the petroleum geologic formation to provide a first mineral output, and to provide a remaining mineral slurry to the second chamber,

wherein a mixing aperture defined by a bottom distal end of the dividing wall and an interior surface of the second chamber fluidically connects the second chamber to the first chamber inside of the receiving vessel at the bottom distal end of the dividing wall.

2. The system of claim 1, wherein the separator includes one or more from the group that consists of a hydrocyclone, a double hydrocyclone, a high G hydrocyclone, a screw press, a belt press, a filter, an ion exchange membrane, a desalination system, and a rotary fan press.

3. The system of claim 1, wherein the separator includes at least one hydrocyclone.

4. The system of claim 1, further comprising:

an injection port configured to receive a substance to add to the mineral slurry at a location before the mineral slurry is received at the separator.

5. The system of claim 1, further comprising:

an injection port configured to receive a coalescing agent to add to the mineral slurry at a location before the mineral slurry is received at the separator.

6. The system of claim 1, further comprising:

an injection port configured to receive a polymer to add to the mineral slurry at a location before the mineral slurry is received at the separator.

7. The system of claim 1, further comprising:

an injection port configured to receive an oxidizing agent to add to the mineral slurry at a location before the mineral slurry is received at the separator.

8. The system of claim 7, wherein the oxidizing agent includes one or more from the group that consists of a permanganate, a potassium permanganate, a hydrogen peroxide, a soap, a surfactant, and a water soluble oxidizing agent.

9. The system of claim 1, wherein the receiving vessel includes a mixing volume operable to receive a portion of a content of the first volume of the receiving vessel and a portion of a content of the second volume of the receiving vessel so that the mineral slurry from the first volume and the remaining mineral slurry from the second volume will come in contact with one another prior to exiting at the one or more output openings of the first volume of the receiving vessel.

10. The system of claim 1, wherein the system is mounted on a skid that may be loaded onto and transported via roadways on a flat-bed trailer.

11. The system of claim 1, wherein the one or more minerals of the mineral slurry that were recovered at least partially from a petroleum geologic formation includes one or more salts.

12. The system of claim 1, wherein the one or more minerals of the mineral slurry that were recovered at least partially from a petroleum geologic formation includes drill cuttings.

13. The system of claim 1, wherein the one or more minerals of the mineral slurry that were recovered at least partially from a petroleum geologic formation includes sand.

14. The system of claim 1, wherein the mineral slurry recovered at least partially from a petroleum geologic formation includes flowback water with one or more solids.

15. The system of claim 1, wherein the mineral slurry recovered at least partially from a petroleum geologic formation includes produced water with one or more salts.

16. The system of claim 1, wherein the mineral slurry recovered at least partially from a petroleum geologic formation includes waste water with one or more solids.

17. A method for separating at least a portion of one or more minerals of a mineral slurry that was recovered at least partially from a petroleum geologic formation, the method comprising:

receiving the mineral slurry that was provided at least partially from the petroleum geologic formation and that includes the one or more minerals at a receiving vessel, the receiving vessel comprising a first chamber of the receiving vessel and a second chamber of the receiving vessel, the first chamber and the second chamber at least partially defined by a dividing wall inside the receiving vessel and shared by both the first and the second chambers, the dividing wall positioned within the receiving vessel, the first chamber and the second chamber at least partially separated by the dividing wall and providing at least a portion of the mineral slurry from the first chamber at one or more output openings of the first chamber;

moving at least a portion of the mineral slurry from the one or more output openings of the first chamber of the receiving vessel to a separator;

separating the mineral slurry between at least a separated liquid and a portion of the one or more minerals;

providing the portion of the one or more minerals to a first location; and

providing at least a first portion of the separated liquid to the second chamber of the receiving vessel, and at least a second portion of the separated liquid to a second location,

mixing the at least a first portion of the separated liquid and the at least the portion of the mineral slurry via a mixing aperture, wherein the mixing aperture is defined by a bottom distal end of the dividing wall and an interior surface of the second chamber and fluidically connects the second chamber to the first chamber inside of the receiving vessel at the bottom distal end of the dividing wall.

18. The method of claim 17, further comprising:

providing an oxidizing agent to at least a portion of the mineral slurry.

19. The method of claim 18, wherein the oxidizing agent includes one or more from the group that consists of a permanganate, a potassium permanganate, a hydrogen peroxide, a soap, a surfactant, and a water soluble oxidizing agent.

20. The method of claim 17, wherein the one or more minerals of the mineral slurry includes salt.

21. The method of claim 17, wherein the mineral slurry originates at least partially from the petroleum geologic formation that is accessed from an oil or natural gas well.