Methods and systems for treatment of subterranean formations

Patent metadata

Field	Value
Publication number	US-10125592-B2
Application number	US-201314902475-A
Country	US
Kind code	B2
Filing date	Aug 8, 2013
Priority date	Aug 8, 2013
Publication date	Nov 13, 2018
Grant date	Nov 13, 2018

Abstract

Improved methods and systems for treating subterranean formations using a sub-surface mixing system are disclosed. The disclosed system includes a well head and a first flow line that directs a blender fluid from a blender to the well head. A second flow line directs a Liquefied Petroleum Gas stream to the well head. A static mixer is positioned downhole and is fluidically coupled to the well head. The well head directs the blender fluid to the static mixer through a first flow path and it directs the Liquefied Petroleum Gas stream from the well head to the static mixer through a second flow path. The static mixer then mixes the blender fluid and the Liquefied Petroleum Gas stream.

First claim

What is claimed is:

1. A system for treatment of a subterranean formation comprising:
a well head;
a first flow line, wherein the first flow line directs a blender fluid from a blender to the well head;
a second flow line, wherein the second flow line directs a Liquefied Petroleum Gas stream to the well head; and
a static mixer comprising a perforating device positioned downhole and fluidically coupled to the well head,
wherein the well head directs the blender fluid from the well head to the static mixer through a first flow path,
wherein the well head directs the Liquefied Petroleum Gas stream from the well head to the static mixer through a second flow path, and
wherein the static mixer mixes the blender fluid and the Liquefied Petroleum Gas stream.

2. The system of claim 1 , wherein the blender receives a first input from a proppant storage unit, a second input from a gelling agent storage unit, a third input from a chemical storage unit and a fourth input from a water storage unit.

3. The system of claim 1 , further comprising one or more valves regulating fluid flow in at least one of the first flow line and the second flow line.

4. The system of claim 1 , wherein a high pressure pump pumps at least one of the blender fluid and the Liquefied Petroleum Gas stream downhole.

5. The system of claim 1 , wherein the blender receives a first input from a liquid sand storage unit, a second input from a chemical storage unit and a third input from a water storage unit.

6. The system of claim 1 , wherein the second flow path comprises a coiled tubing.

7. The system of claim 1 , wherein the perforating device is a hydra-jet tool.

8. The system of claim 1 , wherein the static mixer is located in an interval between the well head and a downhole fracturing interval.

9. A method of treating a subterranean formation comprising:
directing a blender fluid to a well head through a first flow line;
directing a Liquefied Petroleum Gas stream to the well head through a second flow line;
fluidically coupling a static mixer comprising a perforating device to the well head;
wherein the static mixer is disposed downhole,

directing the blender fluid from the well head to the static mixer through a first flow path,
directing the Liquefied Petroleum Gas stream from the well head to the static mixer through a second flow path, and
mixing the blender fluid and the Liquefied Petroleum Gas stream in the static mixer.

10. The method of claim 9 , further comprising:
directing a first input from a proppant storage unit to the blender;
directing a second input from a gelling agent storage unit to the blender;
directing a third input from a chemical storage unit to the blender; and
directing a fourth input from a water storage unit to the blender.

11. The method of claim 9 , further comprising regulating fluid flow in at least one of the first flow line and the second flow line using one or more valves.

12. The method of claim 9 , further comprising pumping at least one of the blender fluid and the Liquefied Petroleum Gas stream downhole using a high pressure pump.

13. The method of claim 9 , further comprising directing a first input to the blender from a liquid sand storage unit, directing a second input to the blender from a chemical storage unit and directing a third input to the blender from a water storage unit.

14. The method of claim 9 , wherein the second flow path comprises a coiled tubing.

15. The method of claim 9 , wherein the perforating device is a hydra-jet tool.

16. The method of claim 9 , further comprising placing the static mixer in an interval between the well head and a downhole fracturing interval.

17. A method of treating a subterranean formation comprising:
directing a blender fluid to a static mixer comprising a perforating device disposed downhole,
wherein the blender fluid is directed through a first flow line from a blender to a well head and the blender fluid is directed through a first flow path from the well head to the static mixer;

directing a Liquefied Petroleum Gas stream to the static mixer,
wherein the Liquefied Petroleum Gas stream is directed to the well head through a second flow line and the Liquefied Petroleum Gas stream is directed from the well head to the static mixer through a second flow path; and

mixing the blender fluid and the Liquefied Petroleum Gas stream in the static mixer.

18. The method of claim 17 , further comprising placing the static mixer at a depth of between approximately 6 feet downhole from the well head to approximately 6 feet uphole from a fracturing interval.

Assignees

• Halliburton Energy Services Inc

Inventors

• Case Leonard R
• Bryant Jason E
• East Loyd Eddie

Classifications

• E21B43/114

  Perforators using direct fluid action {on the wall to be perforated}, e.g. abrasive jets · CPC title

• E21B33/068

  having provision for introducing objects or fluids into, or removing objects from, wells (cementing-heads E21B33/05) · CPC title

• E21B43/26

  by forming crevices or fractures · CPC title

• E21B41/00

  Equipment or details not covered by groups E21B15/00 - E21B40/00 · CPC title

• E21B21/062

  by mixing components · CPC title