RHEOLOGICAL ANALISIS IN THE MAKING OF CEMENT PASTE FOR CEMENTING IN OIL WELLS

According to former President of Petrobras, Maria das Gracas Silva Foster, in 2013 the Brazil produced about 1 million barrels per day, that is, much of the nation's economic demand is subject to extraction of oil, what determines the country scientific investments for the Betterment of this economic mode, in order to maximize the extraction and prevent environmental damage. On the extraction of oil in the drilling process, a step that is required is the cementing of the well. The cement used in the process is subject to strict conditions of temperature and pressure, and must support fragile and porous rocks, fluids corrosive and pressurized. Therefore, it is necessary to check the rheological behavior of cement paste. This work aims to evaluate the study of rheology and rotational dynamics in cementing oil wells. It is therefore important to improve the homogeneity of the cement and ceramic suspensions because they lose these characteristics when subjected to the transport, mixing and pumping. Was held the addition of minerals and additives in the folder for the oil well cement in accordance with the regulations in force, with the implementation of models of Bingham and dynamic power or oscillatory. Where was evaluated by testing the determination of the potential for speed and tests zeta compression and mechanical traction. Evaluated by testing for developers and rheological tests to determine zeta potential of more than 30 mV being the same stable and mechanical compression and traction test.