Chelating acid blends for stimulation of a subterranean formation, methods of utilizing the chelating acid blends, and hydrocarbon wells that include the chelating acid blends
US-11459501-B2 · Oct 4, 2022 · US
Method for preventing calcium citrate precipitation during citric acid acidizing treatments
US8927467B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8927467-B2 |
| Application number | US-96634810-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 13, 2010 |
| Priority date | Dec 13, 2010 |
| Publication date | Jan 6, 2015 |
| Grant date | Jan 6, 2015 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
Methods of preventing precipitation of calcium citrate and iron-based scale during acidizing treatments and related compositions are provided as embodiments of the present invention. The acidizing treatment fluid includes citric acid and tetra-salts of EDTA.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of preventing precipitation of both calcium citrate and iron-based scale during acidizing treatments of a formation, the method comprising the steps of: contacting a formation with a fluid comprising an acidizing treatment fluid, where the acidizing treatment fluid consists essentially of citric acid and tetra-salts of EDTA, where the tetra-salts of EDTA are present in an amount sufficient to prevent the precipitation of both calcium citrate and iro…
Assignees
Inventors
Classifications
Patent family
Related publications grouped by family.
External sources
Next steps
Free tools are coming soon. Tell us what you want to track and we'll notify you.
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US8927467B2 cover?
- Methods of preventing precipitation of calcium citrate and iron-based scale during acidizing treatments and related compositions are provided as embodiments of the present invention. The acidizing treatment fluid includes citric acid and tetra-salts of EDTA.
- Who is the assignee on this patent?
- Al-Khaldi Mohammed H, Saudi Arabian Oil Co
- What technology area does this patent fall under?
- Primary CPC classification C09K8/78. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 06 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).