Method for purifying bacterial cells
US-9493737-B2 · Nov 15, 2016 · US
Method for decreasing the concentration of sulfate reducing bacteria in an aqueous system
US2017191138A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2017191138-A1 |
| Application number | US-201615381224-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 16, 2016 |
| Priority date | Dec 30, 2015 |
| Publication date | Jul 6, 2017 |
| Grant date | — |
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Abstract
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The invention relates to a method of decreasing the concentration of sulfide reducing bacteria in an aqueous system, particularly in an aqueous system used in oil-field applications.
First claim
Opening claim text (preview).
What is claimed is: 1 . A method of decreasing the concentration of sulfate reducing bacteria in an aqueous system comprising the steps of: i. adding Brassicibacter mesophilus to an aqueous system; and ii. contacting the Brassicibacter mesophilus with sulfate reducing bacteria in the aqueous system. 2 . The method of claim 1 wherein the sulfate reducing bacteria is of the genera Desulfovibrio. 3 . The method of claim 2 wherein the sulfate reducing bacteria is Desulfovibrio vulgaris. 4 . The method of claim 1 which is a batch method, whereby the aqueous system is contacted once with the Brassicibacter mesophilus. 5 . The method of claim 1 which is a continuous method, whereby the aqueous system is repeatedly treated with the Brassicibacter mesophilus. 4 . The method of claim 1 , wherein the aqueous system to be contacted, at the time of addition of Brassicibacter mesophilus , does not contain sulfate-reducing bacteria. 5 . A method of recovering oil from oil wells comprising injecting an aqueous system which has been treated in accordance with the method of claim 1 , into a subterranean oil-bearing formation.
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Classifications
using chemical means for preventing or limiting {, e.g. eliminating,} the deposition of paraffins or like substances · CPC title
inorganic depositions, e.g. sulfates or carbonates · CPC title
Enhanced recovery methods for obtaining hydrocarbons · CPC title
- C12R1/01Primary
Chemistry & Metallurgy · mapped topic
organic depositions, e.g. paraffins or asphaltenes · CPC title
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- What does patent US2017191138A1 cover?
- The invention relates to a method of decreasing the concentration of sulfide reducing bacteria in an aqueous system, particularly in an aqueous system used in oil-field applications.
- Who is the assignee on this patent?
- Dow Global Technologies Llc
- What technology area does this patent fall under?
- Primary CPC classification C12R1/01. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Jul 06 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).