Patent ID: 7405182
Filing Date: 2008-07-29
Classification: C09K

Abstract:
1. A hardenable composition slurry comprising an additive which comprises diatomaceous earth, a suspending agent, lime, loss control material, sodium silicate, and sulfate, wherein the suspending agent comprises finely divided paper, wherein the loss control material comprises micronized cellulose fiber, wherein the hardenable composition comprises from 25 to 50% diatomaceous earth, 2 to 30% finely divided paper, 10 to 50% lime, 5 to 15% micronized cellulose fiber, 0.5 to 10% sodium silicate and 0.1 to 5% sulfate, by total weight of the diatomaceous earth, finely divided paper, lime, micronized cellulose fiber, sodium silicate, and sulfate, and the total concentration of the diatomaceous earth, finely divided paper, lime, micronized cellulose fiber, sodium silicate, and sulfate in the slurry is from 20 to 100 pounds per 42-gallon barrel.