In-situ steam quality enhancement using microwave with enabler ceramics for downhole applications

Patent metadata

Field	Value
Publication number	US-10337306-B2
Application number	US-201715458717-A
Country	US
Kind code	B2
Filing date	Mar 14, 2017
Priority date	Mar 14, 2017
Publication date	Jul 2, 2019
Grant date	Jul 2, 2019

Abstract

A steam injector assembly for handling steam in a subterranean well includes a steam separation system, the steam separation system directing an initial high quality steam to a subterranean formation and directing low quality fluid mix to a heating system. The heating system includes a ceramic-containing member located in a travel path of the low quality fluid mix and an electromagnetic antenna positioned to heat the ceramic-containing member with electromagnetic waves. A relief valve is movable to an open position when an improved high quality steam within a heating chamber of the heating system reaches an injection pressure, wherein in the open position, the relief valve provides a fluid flow path out of the heating chamber.

First claim

What is claimed is:

1. A steam injector assembly for handling steam in a subterranean well, the steam injector assembly having:
a steam separation system, the steam separation system directing an initial high quality steam to a subterranean formation and directing low quality fluid mix to a heating system, the heating system having:
a ceramic-containing member located in a travel path of the low quality fluid mix; and
an electromagnetic antenna positioned to heat the ceramic-containing member with electromagnetic waves; and

a relief valve movable to an open position when an improved high quality steam generated from the low quality fluid mix within a heating chamber of the heating system reaches an injection pressure, wherein in the open position, the relief valve provides a fluid flow path out of the heating chamber.

2. The steam injector assembly of claim 1 , further including an upper accumulation chamber with an upper valve, the upper valve moveable to an open position by a first accumulated weight of low quality fluid mix.

3. The steam injector assembly of claim 2 , further including a lower accumulation chamber with a lower valve, the lower accumulation chamber being in fluid communication with the upper accumulation chamber when the upper valve is in the open position, the lower valve moveable to an open position by a second accumulated weight of low quality fluid mix, and wherein in the open position, the lower valve provides fluid communication between the lower accumulation chamber and the heating chamber.

4. The steam injector assembly of claim 1 , wherein the ceramic-containing member includes at least one ceramic mesh plate located within an inner bore of the heating chamber.

5. The steam injector assembly of claim 1 , wherein the ceramic-containing member includes a ceramic bottom located at an end of the heating chamber.

6. The steam injector assembly of claim 1 , wherein the relief valve includes perforations through a sidewall of the heating chamber.

7. The steam injector assembly of claim 1 , wherein the heating chamber is circumscribed by a perforated liner, the perforated liner providing fluid communication between the steam injector assembly and the subterranean formation.

8. The steam injector assembly of claim 1 , wherein the steam separation system includes sloped pads directing the low quality fluid mix in a direction downward and providing a path for the initial high quality steam in an upward direction between successive sloped pads.

9. A system for injecting steam into a subterranean formation with a steam injector assembly, the system comprising:
at least one subterranean hydrocarbon production well extending to the subterranean formation;
a subterranean steam injection well extending to the subterranean formation; and
the steam injector assembly located within the subterranean steam injection well, the steam injector assembly having:
a steam separation system, the steam separation system directing an initial high quality steam to the subterranean formation and directing low quality fluid mix to a heating system, the heating system having:
a ceramic-containing member located in a travel path of the low quality fluid mix; and
an electromagnetic antenna positioned to heat the ceramic-containing member with electromagnetic waves; and

a relief valve movable to an open position when an improved high quality steam generated from the low quality fluid mix within a heating chamber of the heating system reaches an injection pressure, wherein in the open position, the relief valve provides a fluid flow path out of the heating chamber.

10. The system of claim 9 , further including a steam generator located at an earth's surface, the steam generator in fluid communication with a bore of the subterranean steam injection well.

11. The system of claim 9 , further including a power generation unit generating power with a pump of one of the at least one subterranean hydrocarbon production wells, the power generation unit in electrical communication with the steam injector assembly.

12. The system of claim 9 , wherein the electromagnetic waves have a wavelength in a range selected from the group consisting of 3 MHz to 300 MHz, 300 MHz to 300 GHz, and 3 MHz to 300 GHz.

13. The system of claim 9 , wherein the ceramic-containing member includes a series of ceramic mesh plates located within an inner bore of the heating chamber.

14. A method for injecting steam into a subterranean formation with a steam injector assembly, the method comprising:
locating a steam separation system of the steam injector assembly within a subterranean steam injection well, the steam separation system directing an initial high quality steam to the subterranean formation and directing a low quality fluid mix to a heating system of the steam injector assembly, the heating system having a ceramic-containing member located in a travel path of the low quality fluid mix;
heating the ceramic-containing member with electromagnetic waves of an electromagnetic antenna of the heating system, to generate an improved high quality steam from the low quality fluid mix;
providing a relief valve of the steam injector assembly that is movable to an open position when the improved high quality steam within a heating chamber of the heating system reaches an injection pressure, wherein in the open position, the relief valve provides a fluid flow path out of the heating chamber.

15. The method of claim 14 , wherein the steam separation system further includes an upper accumulation chamber with an upper valve, the upper valve moveable to an open position by a first accumulated weight of low quality fluid mix; and a lower accumulation chamber with a lower valve, the lower accumulation chamber being in fluid communication with the upper accumulation chamber when the upper valve is in the open position, the lower valve moveable to an open position by a second accumulated weight of low quality fluid mix, and wherein in the open position, the lower valve provides fluid communication between the lower accumulation chamber and the heating chamber.

16. The method of claim 14 , wherein the ceramic-containing member includes at least one ceramic mesh plate located within an inner bore of the heating chamber and a ceramic bottom located at an end of the heating chamber.

17. The method of claim 14 , wherein the relief valve includes perforations through a sidewall of the heating chamber and the heating chamber is circumscribed by a perforated liner, so that the improved high quality steam that passes out of the heating chamber through the relief valve is injected into the subterranean formation through the perforated liner.

18. The method of claim 14 , wherein the steam separation system includes sloped pads directing the low quality fluid mix in a direction downward and providing a path for the initial high quality steam in an upward direction between successive sloped pads.

19. The method of claim 14 , wherein the subterranean steam injection well extends into the subterranean formation and the method further includes providing at least one subterranean hydrocarbon production well that extends into the subterranean formation.

20. The method of claim 19 , further including generating power with a power generation unit driven by a pump of one of the at least one subterranean hydrocarbon production wells, the power generation unit providing electrical power to the steam injector assembly.

21. The method of claim 14 , further including genera

Assignees

• Saudi Arabian Oil Co

Inventors

• Batarseh Sameeh Issa

Classifications

• E21B43/2408

  SAGD in combination with other methods · CPC title

• E21B43/24

  using heat, e.g. steam injection · CPC title

• E21B43/2401 Primary

  by means of electricity · CPC title

• E21B34/10

  operated by control fluid supplied from outside the borehole · CPC title

• F22B3/00

  Other methods of steam generation; Steam boilers not provided for in other groups of this subclass · CPC title