Fly ash-cement for oil and gas cementing applications
US-11084758-B1 · Aug 10, 2021 · US
Cements for oil and gas cementing applications
US11466192B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11466192-B2 |
| Application number | US-202016914120-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 26, 2020 |
| Priority date | Jun 26, 2020 |
| Publication date | Oct 11, 2022 |
| Grant date | Oct 11, 2022 |
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- Title
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Abstract
Official abstract text for this publication.
A sulfate-resistant cement composition may contain calcium magnesium aluminum oxide silicate, brownmillerite, dolomite, periclase, and calcium aluminum oxide. The composition may contain the calcium aluminum oxide in an amount in the range of 0.01 to 2.0 wt. %. The composition may contain the brownmillerite in an amount of the range of 20 to 30 wt. %.
First claim
Opening claim text (preview).
What is claimed is: 1. A sulfate-resistant cement composition, comprising: calcium magnesium aluminum oxide silicate; brownmillerite; dolomite; periclase; and calcium aluminum oxide, wherein the composition contains the calcium aluminum oxide in an amount of the range of 0.01 to 2.0 wt. %. 2. The composition according to claim 1 , wherein the composition contains the brownmillerite in an amount of the range of 20 to 30 wt. %. 3. The composition according to claim 1 , wherein the composition contains the dolomite in an amount of the range of 5 to 15 wt. %. 4. The composition according to claim 1 , wherein the composition contains the periclase in an amount of the range of 5 to 15 wt. %. 5. The composition according to claim 1 , wherein the composition is free of quartz. 6. A cementing slurry, comprising: a cement composition that comprises calcium magnesium aluminum oxide silicate, brownmillerite, dolomite, periclase; and calcium aluminum oxide; and water; wherein the cement composition contains the calcium aluminum oxide in an amount in the range of 0.01 to 2.0 wt. %. 7. The cementing slurry according to claim 6 , wherein the cement slurry contains the cement composition in an amount in the range of about 40 to 90 wt. %. 8. The cementing slurry according to claim 6 , wherein the cementing slurry contains one or more additives selected from the group consisting of expansion additives, weighting agents, dispersants, and fluid loss additives. 9. The cementing slurry according to claim 6 , wherein the cement composition contains the brownmillerite in an amount of the range of 20 to 30 wt. %. 10. The cementing slurry according to claim 6 , wherein the cement composition contains the dolomite in an amount of the range of 5 to 15 wt. %. 11. The cementing slurry according to claim 6 , wherein the cement composition contains the periclase in an amount of the range of 5 to 15 wt. %. 12. The cementing slurry according to claim 6 , wherein the cement composition is free of quartz. 13. A method of cementing a wellbore, comprising: forming a cementing slurry by mixing water with a cement composition that comprises calcium magnesium aluminum oxide silicate, brownmillerite, dolomite, periclase; and calcium aluminum oxide; pumping the cementing slurry to a selected location within the wellbore; and curing the cementing slurry at the selected location to give a concrete structure, wherein the cement composition contains the calcium aluminum oxide in an amount in the range of 0.01 to 2.0 wt. %. 14. The method according to claim 13 , wherein the concrete structure has a compressive strength of 3000 psi or more. 15. The method according to claim 13 , wherein the cement composition contains the brownmillerite in an amount of the range of 20 to 30 wt. %. 16. The method according to claim 13 , wherein the cement composition contains the dolomite in an amount of the range of 5 to 15 wt. %. 17. The method according to claim 13 , wherein the cement composition contains the periclase in an amount of the range of 5 to 15 wt. %. 18. The method according to claim 13 , wherein the cement composition is free of quartz. 19. The method according to claim 13 , wherein the cement slurry contains the cement composition in an amount in the range of about 40 to 90 wt. %. 20. The method according to claim 13 , wherein the cement slurry contains one or more additives selected from the group consisting of expansion additives, weighting agents, dispersants, and fluid loss additives.
Assignees
Inventors
Classifications
the Ca-silicates being present in the starting mixture · CPC title
- C09K8/467Primary
containing additives for specific purposes · CPC title
Sprayable or pumpable mixtures · CPC title
Sulfate resistance · CPC title
for cementing casings into boreholes · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11466192B2 cover?
- A sulfate-resistant cement composition may contain calcium magnesium aluminum oxide silicate, brownmillerite, dolomite, periclase, and calcium aluminum oxide. The composition may contain the calcium aluminum oxide in an amount in the range of 0.01 to 2.0 wt. %. The composition may contain the brownmillerite in an amount of the range of 20 to 30 wt. %.
- Who is the assignee on this patent?
- Saudi Arabian Oil Co
- What technology area does this patent fall under?
- Primary CPC classification C09K8/467. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Oct 11 2022 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).