Influence of different factors to the strength development of the cement slurry with aplite as a pozzolanic material.

Master's thesis in Petroleum engineeringThis study has 18 experiments which were performed in order to see the influence of different factors to she strength development of cement slurry containing Aplite. Aplite is a pozzolanic material consisting mainly from silica. It provides beneficial strength development for cement slurries curing above 110ºC, more environmental friendly than cement and more cost effective. Experiments showed that Aplite has a pozzolanic effect and prevent cement slurry from strength retrogression at the temperatures higher than 110ºC. Also it was discovered that proportional re-placement of Aplite by cement has a positive effect to the strength development. Experiments showed that curing under high pressures has positive effect to the strength development. Tem-perature has also positive effect to the strength development, but in a different way for the slur-ries curing above and under 110ºC