Estudio comparativo de la inhibición mecánica y química entre el nitrato de calcio, aluminato de sodio y alumbre de potasio con muestras de formaciones de Chalcana y Orteguaza

Abstract

The comparison of chemical and mechanical inhibition of some inhibitors that make up the drilling fluid was made. They were used, an encapsulator inhibitor and three ionic inhibitors; The first inhibitor was supplied by the company that provided the infrastructure and equipment for testing, while the ionic inhibitors were calcium nitrate, potassium alum and sodium aluminate. The clays and shales with which they worked to evaluate the inhibition, correspond to outcrops of the formations belonging to chalcana and orteguaza during the superficial and intermediate drilling of an oil well. To evaluate the inhibitory systems, a drilling fluid was designed with samples of chalcana and orteguaza formation, followed by dynamic aging, in order to bring the properties of the fluid to the well conditions and at the evaluation stage, analyze the behavior of the different inhibitory systems. To observe the correct performance of the inhibitory systems, the samples of the formations were analyzed chemically and physically, the basic properties of the fluid were measured before and after rolling, and finally different inhibitory tests were performed and then compared with each other and determine an inhibitory system. efficient.