Analýza řízení integrity sond

Abstract

This thesis deals with the analysis of well integrity management in underground gas storage facilities. The introductory part explains what well integrity is, why it is important and what makes it up. It furter characterizes the principle of functioning of pressure barriers in the well and the individual elements that form these barriers. It also points out possible ways of malfunction of individual elements of barriers and hence the whole well integrity. The next part describes important aspects of well integrity management that are important for correct well integrity management setup. Great attention is paid to the area of annulus pressure management, where the principle of calculations, setting a monitoring of annulus limit pressures is explained in detail. It also provides guidance on the analysis of undesirable pressures and the detection of their origin. The categorization of wells then describes how to classify the wells according to their safety risk based on the state of individual barrier elements and the development of pressures on the annulus. From the above described findings suggests a well integrity control proposal, which is a detailed guide to the applicaton of this tool in practice. At last case studies of wells integrity failure are describede and their diagnostics and solutions.