Methods for granular scavenger material transfer

Patent metadata

Field	Value
Publication number	US-9376254-B2
Application number	US-201013146369-A
Country	US
Kind code	B2
Filing date	Jan 27, 2010
Priority date	Jan 27, 2009
Publication date	Jun 28, 2016
Grant date	Jun 28, 2016

Abstract

A method for cleaning a reactor, the method including circulating a fluid inside the reactor, pumping the fluid from the reactor into an inlet of a tank cleaner, and removing solids from the fluid to produce a clean fluid. The method further includes transferring the clean fluid to the reactor and transferring pneumatically the removed solids to a pressurized vessel. Also, a method for transferring spent granular material, the method including providing a vacuum system disposed at a hydrocarbon production site to remove spent material from a reactor, transferring the spent material through the vacuum system into a pressurized vessel, and conveying pneumatically the spent material from the pressurized vessel to a second pressurized vessel.

First claim

What is claimed:

1. A method comprising:
providing a vacuum system disposed at a hydrocarbon production site to remove spent granular material from a reactor;
transferring the spent granular material through the vacuum system into a pressurized transference device;
conveying, through a first positive pneumatic transfer, the spent granular material from the pressurized transference device to a first pressurized vessel; and
conveying, through a second positive pneumatic transfer, the spent granular material from the first pressurized vessel to a second pressurized vessel.

2. The method of claim 1 , wherein the second pressurized vessel is disposed on a transport vessel.

3. The method of claim 1 , wherein the spent granular material is transferred pneumatically in dense phase.

4. The method of claim 1 , wherein the granular material is transferred pneumatically in lean phase.

5. The method of claim 1 , wherein the first pressurized vessel is disposed on an offshore production site.

6. The method of claim 1 , wherein the spent material is granular H2S scavenger material.

7. A method comprising:
providing a first pressurized vessel containing granular scavenger material;
connecting the first pressurized vessel to a second vessel; and
transferring pneumatically, via compressed air, the granular scavenger material through a plurality of baffles corresponding to complementary outlets in the first pressurized vessel to the second vessel.

8. The method of claim 7 , wherein the second vessel comprises a pressurized vessel.

9. The method of claim 8 , wherein the first pressurized vessel is configured to transfer the granular scavenger material from the first pressurized vessel to the second pressurized vessel as a dense phase.

10. The method of claim 7 , wherein the first pressurized vessel is configured to transfer the scavenger material from the first pressurized vessel to the second pressurized vessel as a lean phase.

11. The method of claim 8 , further comprising:
transferring, via compressed air, the granular scavenger material from the second pressurized vessel to a reactor.

12. The method of claim 11 , wherein the second pressurized vessel is disposed on a transport vessel.

13. The method of claim 8 , wherein a third pressurized vessel is disposed on a production platform and is configured to pneumatically transfer, via compressed air, the granular scavenger material from the second pressurized vessel to the third pressurized vessel.

14. The method of claim 1 , further comprising conveying the spent granular material through a plurality of baffles corresponding to complementary outlets in at least one of the first pressurized vessel and the second pressurized vessel.

15. The method of claim 1 , wherein the second pneumatic transfer comprises transferring the spent granular material through a lower angled section of the first pressurized vessel into the second pressurized vessel.

16. The method of claim 1 , further comprising transferring the spent granular material from the vacuum system to an inlet disposed on an upper portion of the pressurized transference device.

17. The method of claim 7 , wherein the second vessel comprises a plurality of baffles corresponding to complementary outlets therein.

18. The method of claim 7 , further comprising conveying the granular scavenger material through a lower angled section of the first pressurized vessel into the second vessel.

19. The method of claim 7 , wherein the first pressurize vessel is connected to an inlet disposed on an upper portion of the second vessel.

20. The method of claim 7 , further comprising conveying the granular scavenger material from a land based facility into the first pressurized vessel, and
transporting the first pressurized vessel with a transport vessel to an offshore production site.

Assignees

• Logan Gordon M
• Eia Jan Thore
• Hunter Martin
• Bingham Richard
• Lauder Colin
• Mi Llc
• M I Drilling Fluids Uk Ltd
• Schlumberger Norge As

Inventors

• Logan Gordon M
• Eia Jan Thore
• Hunter Martin
• Bingham Richard
• Lauder Colin

Classifications

• B01D21/02

  Settling tanks {with single outlets for the separated liquid} · CPC title

• B63B27/29

  Other loading or unloading equipment involving a continuous action, not provided in groups B63B27/22 - B63B27/28 · CPC title

• B01D21/26

  Separation of sediment aided by centrifugal force {or centripetal force}(centrifuges B04B; cyclones B04C) · CPC title

• B65D90/36

  Weakened parts · CPC title

• B63B27/25

  for fluidised bulk material · CPC title