Evaluación de la estabilidad de geles de poliacrilamida, usados en pozos de petróleo, por efecto de tratamientos químicos de estimulación

Abstract

This study aims to assess the possible effect of chemical stimulation treatments used in oil wells on the stability of polyacrylamide gel injected into these wells to injection profiles improved and enhanced oil recovery. Also, assessing concentrations of Acrylamide and Chromium VI are released as a result of degradation of the gels as a result of stimulation treatments. It is important to assess concentrations of these chemical species, as these represent a risk to health and the environment, especially for existing aquifers in the area of exploitation. For this, two polymers (HPAM), one of high molecular weight and a low molecular weight are selected, one containing chromium III crosslinker is used and subsequently be prepared polyacrylamide gels. These gels are subjected to contact with different chemical species used for stimulation treatments of wells at constant temperatures for a certain period of time, then the samples will call filtrates were taken and the concentration analysis Chromium VI and Acrylamide were made, among others . This study has the support of the Chemical Production Laboratory of the Colombian Petroleum Institute and serve as a graduation requirement filmmakers as Environmental Chemists at the Bucaramanga Santo Tomas University.