Corrosion inhibitor compositions and methods of using the compositions to inhibit corrosion
US-2024376608-A1 · Nov 14, 2024 · US
Breaking diutan with oxalic acid at 180° F to 220° F
US9016375B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9016375-B2 |
| Application number | US-201113307968-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 30, 2011 |
| Priority date | Nov 30, 2011 |
| Publication date | Apr 28, 2015 |
| Grant date | Apr 28, 2015 |
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Abstract
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A method of treating a portion of a well of a well. The method includes the step of forming a treatment fluid comprising: (i) a continuous aqueous phase; (ii) a viscosity increasing agent selected from the group consisting of diutan, clarified diutan, water-soluble derivative of diutan, and any combination thereof, wherein the viscosity-increasing agent is dissolved in the aqueous phase; and (iii) a breaker comprising oxalic acid, wherein the oxalic acid is dissolved in the aqueous phase. The viscosity of the treatment fluid breaks to less than 3.0 cP in less than 72 hours when in a temperature range of 180° F. (82.2° C.) to 220° F. (104.4° C.). The method also includes the steps of introducing the treatment fluid into the portion of the well and flowing back from the portion of the well.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of treating a portion of a well, the method comprising the steps of: (a) forming a treatment fluid comprising: (i) a continuous aqueous phase comprising water; (ii) a viscosity-increasing agent selected from the group consisting of diutan, clarified diutan, water-soluble derivative of diutan, and any combination thereof, wherein the viscosity-increasing agent is dissolved in the aqueous phase to an extent of at least 0.1% by weight of the water;…
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Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
- C09K8/035Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US9016375B2 cover?
- A method of treating a portion of a well of a well. The method includes the step of forming a treatment fluid comprising: (i) a continuous aqueous phase; (ii) a viscosity increasing agent selected from the group consisting of diutan, clarified diutan, water-soluble derivative of diutan, and any combination thereof, wherein the viscosity-increasing agent is dissolved in the aqueous phase; and (i…
- Who is the assignee on this patent?
- Salgaonkar Lalit P, Suryawanshi Prerana U, Danait Achala V, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification C09K8/035. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Apr 28 2015 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).