Experimental and statistical investigation of drilling fluids loss in porous media-part 1

The results from the experiments showed that a change in temperature significantly affects fluid loss. The importance of rock mineralogy, porosity, and permeability in dictating dynamic fluid loss profiles, mud invasion rates, and plastering effects were also revealed by the fluid loss results. The results from the ceramic filter tubes, often undermines the effect of rock type which can be misleading. Statistical analyses showed no significant change in dynamic fluid loss with the two treatment levels of pore throat diameters that were investigated. These results cannot represent the actual porous media complexities. In the cases where vertical fractures were created and sealed, the combined effects of LCM and low permeability of rock specimen were defined in the reduced dynamic mud filtration results and filter cake plastering effects.