| 摘要 |
<p>A method of cementing in a subterranean formation comprising the steps of: (A) introducing a cement composition into the subterranean formation, the cement composition comprising: (i) cement; (ii) water; and (iii) a high-density additive selected from the group consisting of silicon carbide, sintered bauxite, and any combination thereof, wherein the cement composition has a density of at least 16 pounds per gallon; and (B) allowing the cement composition to set. According to an embodiment, the high-density additive is in a concentration of at least 30 % by weight of the cement. A cement composition for use in an oil or gas well comprises: (A) cement; (B) water; and (C) a high- density additive selected from the group consisting of silicon carbide, sintered bauxite, and a combination thereof, wherein the high-density additive is in a concentration of at least 30 % by weight of the cement, and wherein the cement composition has a density of at least 16 pounds per gallon.</p> |
