US 12,077,709 B2
Cement slurry compositions comprising pozzolanic cement additives and methods for improving development of compressive strengths in the cement slurry compositions
Bernardo Engelke, Houston, TX (US); Lynn Foster, Pearland, TX (US); and Valerie Lafitte, Sugar Land, TX (US)
Assigned to Schlumberger Technology Corporation, Sugar Land, TX (US)
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
Filed on Dec. 2, 2022, as Appl. No. 18/073,650.
Prior Publication US 2024/0182774 A1, Jun. 6, 2024
Int. Cl. C09K 8/467 (2006.01); C04B 14/04 (2006.01); C04B 14/10 (2006.01); C04B 14/22 (2006.01); C04B 18/08 (2006.01); C04B 18/14 (2006.01); C04B 18/24 (2006.01); C04B 28/04 (2006.01); C04B 111/00 (2006.01); E21B 33/14 (2006.01)
CPC C09K 8/467 (2013.01) [C04B 14/045 (2013.01); C04B 14/047 (2013.01); C04B 14/104 (2013.01); C04B 14/106 (2013.01); C04B 14/22 (2013.01); C04B 18/08 (2013.01); C04B 18/141 (2013.01); C04B 18/248 (2013.01); C04B 28/04 (2013.01); E21B 33/14 (2013.01); C04B 2111/00146 (2013.01); C04B 2201/20 (2013.01); C04B 2201/50 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A pumpable cement slurry composition comprising:
at least one cement component comprising cement particles;
water;
an aluminosilicate additive component consisting of:
a first aluminosilicate additive comprising metakaolin and having an amorphous phase of greater than 50%; and
a second aluminosilicate additive comprising rice husk ash,
wherein the first and second aluminosilicate additives are each present at a concentration of about 10% to about 15% by weight of the at least one cement component and comprise a weight ratio of silica to aluminum oxide (Si/Al weight ratio) of about 1.0 to about 2.5, and
wherein the pumpable cement slurry composition comprises a density of about 10 ppg to about 11.5 ppg and a solid volume fraction of less than about 40%.