Effects of Temperature on Fluid Loss Additive Used in Cement Slurries for Cementation

Abstract

Studies have shown that the rheology of cement slurries used in oil well cementing operations is a function of temperature, additive type, cement grade, pressure, and concentration of the additives. The cementing operation can directly affect the drilling operations. This study aims to analyze the effect of fluid loss additives on different temperatures and slurry thickening time. Three experiments were conducted by changing the surface temperature of the slurry and the impact of Fluid Loss on thickening time was observed. The first result shows that when the temperature is kept at the standard conditions the thickening time of the slurry was the same as it was designed. The second result of the analysis revealed that when the temperature is increased by 10 degrees Celsius the thickening time of the slurry is increased by more than 3 hours as the fluid loss additive is highly affected by the high temperature and the fluid loss will release the water sooner than the standard design. The third experiment results showed when the slurry temperature was dropped to 18 degrees Celsius the thickening time of the slurry was increased by more than 12 hours due to the effect of temperature on the slurry as the slurry is unable to release the water from the slurry due to fluid loss additive. This study concludes that temperature fluctuations can significantly influence cementing operations and if those are overlooked, may lead to complications in the well. This helps in petroleum testing and fluid mechanics in the oil and gas industry.