Contemporary Problems of Long-Developed Deposits and Solved Issues (On the Example of Darwin, Pirallahi, Gurgan Deposits)

Abstract

Azerbaijan is one of the oldest oil and gas producing regions in the world. Industrial development of oil fields has been started here since the second half of the 19th century. The article examines the current state of the fields that have been under development for a long time and identifies modern problems. Solutions to these problems have been explored. Our research objects are Darwin Bank, Pirallahi Island and Gurgan-Deniz fields on the Western Absheron-South anticline line. All three fields have been under development for a long time and have sufficient residual reserves. The study of the current state of oil and gas fields, which have been under development in our country for a long time, shows that it is necessary to take the right approach to identifying ways of efficient use resources. During the development process, the geological parameters of oil and gas fields are subject to certain changes. These changes can be both regular and in various forms. Issues that are important for the effective completion of the long-term development of oil and gas fields which we researching have been studied and identified. Geological-geophysical data were collected and systematized to clarify the structural-tectonic, lithofacial features and substantiate the ways of effective development of resources. The geological structure and structural tectonic features of the deposits have been clarified and structural maps have been compiled. 3D geological model of the deposits has been compiled, lithofacial features have been determined and lithofacial model has been constructed. The characteristics of tectonic faults were determined, the reserves were redefined and geological risks were assessed. Keywords: Field; Geological model; Structural map; Productive series; Development; Exploitation.