Single-phase retarded acid systems using amino acids
US-2024360356-A1 · Oct 31, 2024 · US
Aqueous solution and method for use thereof
US2015114647A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2015114647-A1 |
| Application number | US-201314062291-A |
| Country | US |
| Kind code | A1 |
| Filing date | Oct 24, 2013 |
| Priority date | Oct 24, 2013 |
| Publication date | Apr 30, 2015 |
| Grant date | — |
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Abstract
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Aqueous compositions contain hydrochloric acid at a concentration between 8 wt % and 28 wt % inclusive. The amino acid; hydrochloric acid mole ratio may be between 0.2 and 1.5. Sufficient water is present to dissolve the hydrochloric acid and the amino acid. Such compositions have utility as retarders for acid compositions employed in the stimulation of subterranean formations. Slowing the reaction between the acid and formation helps maximize formation permeability and productivity.
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We claim: 1 . An aqueous composition, comprising: (i) hydrochloric acid at a concentration between 8 wt % and 28 wt %, inclusive; and (ii) at least one amino acid, wherein the amino acid:hydrochloric acid molar ratio is between 0.2 and 1.5, and sufficient water is present to dissolve the hydrochloric acid and the amino acid and wherein the amino acid comprises alanine, asparagines, aspartic acid, cysteine, glutamic acid, histidine, leucine, lysine, methonine, proline, seri…
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- What does patent US2015114647A1 cover?
- Aqueous compositions contain hydrochloric acid at a concentration between 8 wt % and 28 wt % inclusive. The amino acid; hydrochloric acid mole ratio may be between 0.2 and 1.5. Sufficient water is present to dissolve the hydrochloric acid and the amino acid. Such compositions have utility as retarders for acid compositions employed in the stimulation of subterranean formations. Slowing the reac…
- Who is the assignee on this patent?
- Schlumberger Technology Corp
- What technology area does this patent fall under?
- Primary CPC classification C09K8/74. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Apr 30 2015 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).