Procedimiento para la determinación de tasa de imbibición y volumen poroso por medio de imbibición espontánea en un sistema roca-agua-aire : procedimiento para la determinación de tasa de imbibición y volumen poroso por medio de imbibición espontánea en un sistema roca-agua-aire.

Abstract

The study of displacement between gas and water caused by imbibition in gas reservoirs plays an extremely important role in hydrocarbon development, as imbibition is intertwined with phenomena such as reservoir invasion, gas blocking by water, and the negative impact of imbibition by causing water intrusion at the edges and bottom of fractured reservoirs. To contribute to this significant topic, a laboratory procedure has been developed that explains how to conduct a spontaneous imbibition test using samples with faces in complete contact with the wetting fluid. Spontaneous imbibition was applied to samples from the Socorro of Santa Elena formation, which were selected due to their proximity to the Ecuadorian gas reservoir. In this study, a setup of balance-sample-water was assembled, allowing the collection of data on weight, imbibition rates, and time. These data were subsequently used to create graphical representations that depicted the behavior of these variables over time. Additionally, based on the obtained data, the imbibed porous volume by the wetting fluid was measured using the saturation method. Finally, with a functional and replicable procedure in place, the water mobility in the samples was altered by applying a hydrophobic surfactant to compare its effect on the imbibition weight.