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US-9193898-B2 · Nov 24, 2015 · US
Compositions, systems, and methods for removing iron sulfide scale from oilfield components
US9919348B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9919348-B2 |
| Application number | US-201515038721-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 20, 2015 |
| Priority date | Apr 20, 2015 |
| Publication date | Mar 20, 2018 |
| Grant date | Mar 20, 2018 |
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Abstract
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The present disclosure relates to compositions, systems and methods for removing iron sulfide scale from a solid object, such as an oilfield component. The compositions include a carbon-carbon (C—C) double bond with an electron withdrawing group bonded to at least one of the double-bonded carbons.
First claim
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The invention claimed is: 1. A method of removing iron sulfide scale from an oilfield component with iron sulfide scale, the method comprising applying to the oilfield component in an amount and for a time sufficient to remove iron sulfide scale from the oilfield component a removal material comprising a composition with the general structural formula: wherein R 1 is an electron withdrawing group and R 2 is R 1 , hydrogen (H), or a moiety comprising another electron withdrawing group, and wherein at least 80% of the iron sulfide scale on the oilfield component is broken into component ions by the composition with general structural formula (I). 2. The method of claim 1 , wherein the removal material comprises at least two distinct compositions with the general structural formula (I). 3. The method of claim 1 , wherein R 1 comprises an acetate group. 4. The method of claim 1 , wherein the removal material further comprises a polar solvent. 5. The method of claim 1 , wherein at least 85% of the iron sulfide scale on the oilfield component is broken into component ions by the composition with general structural formula (I). 6. The method of claim 1 , wherein applying occurs in a sealed container. 7. The method of claim 1 , further comprising recovering the removal material. 8. The method of claim 1 , wherein the oilfield component comprises a perforation, a casing, a production tubular, a valve, a pump, or downhole completion equipment with iron sulfide scale. 9. The method of claim 1 , wherein at least 90% of the iron sulfide scale on the oilfield component is broken into component ions by the composition with general structural formula (I). 10. The method of claim 1 , wherein at least 95% of the iron sulfide scale on the oilfield component is broken into component ions by the composition with general structural formula (I). 11. The method of claim 1 , wherein substantially all of the iron sulfide scale on the oilfield component is broken into component ions by the composition with general structural formula (I).
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- What does patent US9919348B2 cover?
- The present disclosure relates to compositions, systems and methods for removing iron sulfide scale from a solid object, such as an oilfield component. The compositions include a carbon-carbon (C—C) double bond with an electron withdrawing group bonded to at least one of the double-bonded carbons.
- Who is the assignee on this patent?
- Halliburton Energy Services Inc
- What technology area does this patent fall under?
- Primary CPC classification C09K8/528. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 20 2018 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).