Synthesis of a cationic surfmer and its copolymers for enhanced oil recovery
US-2022025090-A1 · Jan 27, 2022 · US
Degradable friction reducer for hydraulic fracturing treatments
US12098326B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12098326-B2 |
| Application number | US-202318485860-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 12, 2023 |
| Priority date | Aug 11, 2021 |
| Publication date | Sep 24, 2024 |
| Grant date | Sep 24, 2024 |
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- Title
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Abstract
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A polyacrylamide friction reducer wherein the friction reducer contains surfactant functional groups, and wherein the polyacrylamide friction reducer is degradable, can be used for multi-functional, slickwater fracturing fluid projects. Under downhole conditions, the polymer degrades and releases the surfactant molecules to act as oil displacing agent to provide additional stimulation.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of fracturing a well comprising: reacting acrylamide and other monomers with one or more surfmers to form polyacrylamide friction reducer; adding the polyacrylamide friction reducer to a well fracturing fluid; pumping the well fracturing fluid into the well; and reducing the friction within the well with the polyacrylamide friction reducer. 2. The method of claim 1 further comprising: breaking chemical bonds between the polyacrylamide polymer and the one or more surfmers under downhole conditions. 3. The method of claim 2 wherein the one or more surfmers released from the polyacrylamide polymer displace hydrocarbon in the well. 4. The method of claim 1 wherein the polyacrylamide friction reducer is added to the well fracturing fluid at a concentration of about 0.25 to 10 gallons friction reducer per 1,000 gallons of fracturing fluid. 5. The method of claim 2 further comprising: reducing the interfacial tensions within the well.
Assignees
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Classifications
by forming crevices or fractures · CPC title
Friction or drag reducing additives · CPC title
macromolecular compounds · CPC title
- C09K8/68Primary
containing organic compounds · CPC title
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- What does patent US12098326B2 cover?
- A polyacrylamide friction reducer wherein the friction reducer contains surfactant functional groups, and wherein the polyacrylamide friction reducer is degradable, can be used for multi-functional, slickwater fracturing fluid projects. Under downhole conditions, the polymer degrades and releases the surfactant molecules to act as oil displacing agent to provide additional stimulation.
- Who is the assignee on this patent?
- Cnpc Usa Corp, Beijing Huamei Inc, China Nat Petroleum Corp
- What technology area does this patent fall under?
- Primary CPC classification C09K8/68. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Sep 24 2024 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).