Real-time processing of water for hydraulic fracture treatments using a transportable frac tank

• US 20100224495A1
• Filed: 03/09/2010
• Published: 09/09/2010
• Est. Priority Date: 08/02/2007
• Status: Abandoned Application

• Current Assignee: Dennis Mcguire, Sanjeev Jakhete
• Original Assignee: Dennis Mcguire, Sanjeev Jakhete
• Inventors: McGuire, Dennis, Jakhete, Sanjeev
• Application Number:
  US12/720,456
• Publication Number:
  US 20100224495A1
• Time in Patent Office: Days
• US Class Current: 204/667
• CPC Class Codes: C02F 1/24 by flotation C02F1/465 takes precedence
• CPC Class Codes: C02F 1/283 using coal, charred products, or inorganic mixtures containing them
• CPC Class Codes: C02F 1/32 with ultraviolet light
• CPC Class Codes: C02F 1/36 ultrasonic vibrations
• CPC Class Codes: C02F 1/385 by centrifuging suspensions centrifuges B04B
• CPC Class Codes: C02F 1/40 Devices for separating or removing fatty or oily substances or similar floating material cleaning or keeping clear the surface of open water from oil or like materials E02B15/04; devices in sewers for separating liquid or solid substances from sewage E03F5/14, e.g. for use in drains leading to the sewer E03F5/16
• CPC Class Codes: C02F 1/441 by reverse osmosis
• CPC Class Codes: C02F 1/444 by ultrafiltration or microfiltration
• CPC Class Codes: C02F 1/4602 for prevention or elimination of deposits
• CPC Class Codes: C02F 1/4672 by electrooxydation
• CPC Class Codes: C02F 1/5236 using inorganic agents
• CPC Class Codes: C02F 1/78 with ozone C02F1/4672 takes precedence
• CPC Class Codes: C02F 2001/46119 Cleaning the electrodes
• CPC Class Codes: C02F 2001/46157 Perforated or foraminous electrodes
• CPC Class Codes: C02F 2101/20 Heavy metals or heavy metal compounds
• CPC Class Codes: C02F 2101/32 Hydrocarbons, e.g. oil
• CPC Class Codes: C02F 2103/365 from petrochemical industry (e.g. refineries)
• CPC Class Codes: C02F 2201/008 Mobile apparatus and plants, e.g. mounted on a vehicle for biological treatment C02F2203/008
• CPC Class Codes: C02F 2201/4617 DC only
• CPC Class Codes: C02F 2303/16 Regeneration of sorbents, filters
• CPC Class Codes: C02F 9/00 : Multistage treatment of water, waste water or sewage

Abstract

A self contained, transportable, water pretreatment system and tank for use in a hydraulic treatment of subterranean formations with a well bore. The system treats recycled production water by electro-chemically generating mixed oxidants to sterilize the recycled water and to electro-chemically precipitate hardness without the addition of chemicals. The treatment system and tank form a self contained unit that is mounted with a truck trailer to facilitate easy and efficient relocation of the equipment.

Claims

1. A system for the pre-treatment of water or brine used for fracturing oil and gas formations comprising:

a truck trailer containing a water treatment system;

said truck trailer configured to be attached to a truck tractor such that the trailer can be moved from one location to another;

said truck trailer including a control room located in a partitioned space located on the truck trailer;

said truck trailer also including a liquid holding and treatment tank;

said water treatment system including a quantity of water in said liquid holding and treatment tank, a pump for fluidly conveying water from said liquid holding and treatment tank to a mixing device that mixes said water with a source of ozone, and a distribution pipe for returning the water to said liquid holding and treatment tank from said mixing device, said system further including a source of DC electrical energy that is electrically connected to at least one anode immersed in said water within said liquid holding and treatment tank.

2. The system for the pre-treatment of water or brine used for fracturing oil and gas formations as set forth in claim 1 wherein said source of ozone includes an air compressor which feeds an air separation unit which in turn feeds ozone generator.

3. The system for the pre-treatment of water or brine used for fracturing oil and gas formations as set forth in claim 1 wherein said mixing device is an injector having an ozone inlet located within a venturi passageway within said injector.

4. The system for the pre-treatment of water or brine used for fracturing oil and gas formations as set forth in claim 1 wherein the source of DC electrical energy has a positive source that is electrically connected to a plurality of anodes mounted in a wall of said liquid holding and treatment tank.

5. The system for the pre-treatment of water or brine used for fracturing oil and gas formations as set forth in claim 1 wherein the source of DC electrical energy has a negative source that is electrically connected to a plurality of cathodes mounted within said holding and treatment tank.

6. The system for the pre-treatment of water or brine used for fracturing oil and gas formations as set forth in claim 5 wherein each of said plurality of cathodes is a perforated plate that is vertically supported within said liquid holding and treatment tank.

7. The system for the pre-treatment of water or brine used for fracturing oil and gas formations as set forth in claim 6 wherein said distribution pipe includes a plurality of spray orifices designed to spray the water mixed with ozone over said cathode plates to reduce scaling thereon.

8. The system for the pre-treatment of water or brine used for fracturing oil and gas formations as set forth in claim 1 wherein the water mixed with ozone will float colloidal precipitant and oil droplets to the top of the tank where it will build up as froth on top of the water.

9. The system for the pre-treatment of water or brine used for fracturing oil and gas formations as set forth in claim 1 said source of DC electrical energy is mounted in the control room.

10. The system for the pre-treatment of water or brine used for fracturing oil and gas formations as set forth in claim 1 wherein said pump, said source of ozone and said mixing device are mounted in said control room.

11. The system for the pre-treatment of water or brine used for fracturing oil and gas formations as set forth in claim 1 wherein said truck trailer is sized and configured to be transportable by rail car, or shipping vessel.

12. The system for the pre-treatment of water or brine used for fracturing oil and gas formations as set forth in claim 1 wherein said liquid holding and treatment tank has a capacity greater than two hundred thousand gallons.