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US 10,202,537 B1Granted
Cement compositions comprising high viscosity elastomers on a solid support
AssigneeSaudi Arabian Oil Company
InventorB. Raghava Reddy
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Abstract
A composition forming a free-flowing cement additive, the composition comprising a high viscosity elastomer, the high viscosity elastomer having a viscosity between 50,000 cP and 300,000 cP at room temperature; and an inert support, where the high viscosity elastomer is deposited on the inert support.
Claims13
A method of making a cement slurry for downhole cementing applications, the method comprising the steps of:
- blending an amount of a free-flowing cement additive with a cement to form a dry cement mix, where the free-flowing cement additive comprises:
- a high viscosity elastomer, the high viscosity elastomer having a viscosity between 50,000 cP and 300,000 cP at room temperature, where the high viscosity elastomer comprises a liquid elastomer, where the liquid elastomer comprises a low molecular weight polymer having molecular weights in the range of 1,000 to 250,000 Daltons (Da), where the low molecular weight polymer comprises butadiene;
- and
- an inert support, where the high viscosity elastomer is deposited on the inert support, where the inert support is selected from the group consisting of sand, quartz, amorphous silica, alumina, clay, fly ash, minerals, salts, and combinations of the same;
- and
- mixing the dry cement mix with an aqueous fluid to form the cement slurry.
3 more elements
A method of using a cement slurry in a downhole cementing application, the method comprising the steps of:
- blending an amount of a free-flowing cement additive with a cement to form a dry cement mix, where the free-flowing cement additive comprises:
- a high viscosity elastomer, the high viscosity elastomer having a viscosity between 50,000 cP and 300,000 cP at room temperature, where the high viscosity elastomer comprises a liquid elastomer, where the liquid elastomer comprises a low molecular weight polymer having molecular weights in the range of 1,000 to 250,000 Daltons (Da), where the low molecular weight polymer comprises butadiene;
- and
- an inert support, where the high viscosity elastomer is deposited on the inert support, where the inert support is selected from the group consisting of sand, quartz, amorphous silica, alumina, clay, fly ash, minerals, salts, and combinations of the same;
- mixing the dry cement mix with an aqueous fluid to form the cement slurry;
- placing the cement slurry in a wellbore in the downhole cementing application;
- and
- allowing the cement slurry to set to form a hardened cement.
5 more elements
Dependencies are inferred from the claim text.