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US 12,497,552 B2Granted
Cement compositions including volcanic ash
AssigneeSaudi Arabian Oil Company
InventorsNoktan Mohammed AlYami, Ali Al-Safran, Vikrant Wagle, Abdullah Saleh Hussain Al-Yami, Thomas Heinold, Khawlah Alanqari
Life of this patent
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Abstract
The present disclosure relates to cement compositions including Portland cement and volcanic ash. An exemplary cement composition includes about 10 wt % to about 85 wt % of Portland cement, and about 10% by weight of cement (BWOC) to about 70% BWOC of volcanic ash.
Claims27
A cement composition, comprising:
- about 10 wt % to about 45 wt % of Portland cement;
- about 30% by weight of cement (BWOC) to about 50% BWOC of volcanic ash, wherein the volcanic ash comprises about 75 wt % silicon dioxide (SiO2);
- and
- about 25 wt % to about 80 wt % of water;
- wherein a weight ratio of water to a total amount of Portland cement and volcanic ash present in the cement composition is about 0.4:1 to about 2:1;
- and
- the cement composition has no free fluid.
4 more elements
A cement composition, comprising:
- about 10 wt % to about 45 wt % of Portland cement;
- about 30% BWOC to about 50% BWOC of volcanic ash, wherein the volcanic ash comprises about 75 wt % silicon dioxide (SiO2);
- about 0.01% BWOC to about 2% BWOC of a defoamer;
- about 0.1% BWOC to about 5% BWOC of a gelling agent;
- about 0.1% BWOC to about 3% BWOC of a retarder;
- and
- about 25 wt % to about 80 wt % of water;
- wherein a weight ratio of water to a total amount of Portland cement and volcanic ash present in the cement composition is about 0.4:1 to about 2:1;
- and
- the cement composition has no free fluid.
7 more elements
A cement composition, comprising:
- about 10 wt % to about 45 wt % of Portland cement;
- about 30% BWOC to about 50% BWOC of volcanic ash, wherein the volcanic ash comprises about 75 wt % silicon dioxide (SiO2);
- about 5% BWOC to about 20% BWOC of an extender;
- about 0.01% BWOC to about 2% BWOC of a defoamer;
- about 25 wt % to about 80 wt % of water;
- wherein a weight ratio of water to a total amount of Portland cement and volcanic ash present in the cement composition is about 0.4:1 to about 2:1;
- and
- the cement composition has no free fluid.
5 more elements
Dependencies are inferred from the claim text.