Patent ID: 7363976

Claim:
A method of remediating a well having a well fluid residing in the well, the method comprising: (A) providing a cement component and a cement activator component, each having a density greater than the density of the well fluid; (B) selecting a first component and a second component from the group consisting of the cement component and the cement activator component, wherein the first component and the second component are different, and the density of the second component is higher than the density of the first component; (C) placing the first component in the well to be remediated; (D) placing the second component in the well at a point above the first component that will allow for gravity flow of the second component down into contact with the first component; and, (E) gravity flowing the second component down into contact with the first component to displace at least a portion of the first component, wherein the activator mixes with less than 2 percent with the well fluid, and the activator mixes with less than 20% with the cement.