(EFFECT OF WAVE ACTION ON CEMENTING SLURRIES ON THEIR MECHANICAL PROPERTIES DURING THEIR PREPARATION FOR SUBSEQUENT CEMENTING OF PETROLEUM WELL ANNULI)
This paper investigates the effect of wave action on the mechanical properties of cementing slurries to determine the optimal parameters of the processes of their preparation and injection into well annuli. It also presents the research results for the effect of vibration on the setting time of cement paste and the set cement strength at the vibration frequency range from 50 to 200 Hz. We analyzed the experimental test of the cement strength under strain depending on the frequency and duration of generated vibrations and their onset time from the moment of mixing the cement. The analysis of the data obtained shows that the compression and bending strength performances of set cement considerably depend on the vibration duration and onset time counting from the moment of cementing slurry preparation. It is experimentally found that the wave action on cementing slurry affects its coagulation and crystal structure formation, increasing the proportion of microcrystalline particles and clusters formed by their aggregation. The study results confirm that wave action on a cementing slurry increases the set cement strength.
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