Method of using sophorolipids in well treatment operations
US-10190038-B2 · Jan 29, 2019 · US
Microbial products and uses thereof to improve oil recovery
US12227694B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12227694-B2 |
| Application number | US-202217882138-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 5, 2022 |
| Priority date | Apr 9, 2017 |
| Publication date | Feb 18, 2025 |
| Grant date | Feb 18, 2025 |
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Abstract
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This invention relates to compositions and methods of microbial enhanced oil recovery using biochemical-producing microbes. In specific embodiments, the methods of the subject invention comprise applying a biosurfactant-producing bacteria and/or a growth by-product thereof to an oil-producing site. In preferred embodiments, the bacteria is a strain of Bacillus in spore form. In some embodiments, the methods further comprise applying the bacteria with a yeast fermentation product, an alkaline compound, a polymer, a non-biological surfactant, and/or one or more chelating agents. Advantageously, the subject invention can be useful for stimulating the flow of oil from a well, as well as dissolving scale present in an oil-bearing formation.
First claim
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What is claimed: 1. A method for stimulating the flow of oil from an oil-bearing formation, wherein the method comprises applying to the formation a sophorolipid biosurfactant produced by Starmerella bombicola and a fermentation medium in which the sophorolipid was produced, said fermentation medium comprising inactive yeast cellular components; wherein said method further comprises applying to the formation ethylenediaminetetraacetic acid (EDTA) as a chelating agent; at least one solvent that is isopropyl alcohol or ethanol; and a C8-C18 ethoxylated alcohol. 2. The method of claim 1 , further comprising applying one or more non-biological surfactants to the formation in addition to the ethoxylated alcohol. 3. The method of claim 1 , further comprising applying citric acid and/or sodium citrate as chelating agents.
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Frequently asked questions
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- What does patent US12227694B2 cover?
- This invention relates to compositions and methods of microbial enhanced oil recovery using biochemical-producing microbes. In specific embodiments, the methods of the subject invention comprise applying a biosurfactant-producing bacteria and/or a growth by-product thereof to an oil-producing site. In preferred embodiments, the bacteria is a strain of Bacillus in spore form. In some embodimen…
- Who is the assignee on this patent?
- Locus Solutions Ipco Llc
- What technology area does this patent fall under?
- Primary CPC classification C09K8/584. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Feb 18 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 12 related publications on this page (citations in our corpus or others sharing the same primary CPC).