Abstract
<jats:p>The development of offshore oil fields, in comparison with onshore fields, is characterized by shorter production lifespans, primarily due to the limited service life of hydraulic engineering structures. Therefore, while at the early stages of reservoir development well production rates are governed by the natural energy characteristics of the formations, maintaining high production rates at later stages requires costly well pattern infill drilling, the application of tertiary recovery methods, and other enhanced techniques. In this context, a scientific approach to reservoir enlargement through perforation extension, the integration of adjacent development units, as well as the potential application of commingled and selective production, is of significant practical interest. To this end, production units were identified for the multilayered Palchyg Pilpilesi field. Based on these investigations, the feasibility of combining previously delineated units was established, which would increase production rates without additional capital expenditures. The object of the study is the stratigraphic section of the Productive Series of the Palchyg Pilpilesi field, located within the Absheron Archipelago of the South Caspian Depression. Average values of geological and technological parameters were calculated for all producing horizons of the field. On this basis, with a confidence level of 95%, the critical value v(r02) x20.05=17.3 of the Rodionov’s criterion, =17.3, was determined for defining boundaries between productive reservoirs. Using this method and appropriate software tools, the criterion values were calculated for all boundaries between adjacent development units within the studied section. Comparison of these values with the critical threshold enables an unambiguous decision regarding either the separate development of the units or the feasibility of their integration. The conducted studies, based on computer-assisted statistical data processing, allowed for the identification of productive reservoirs within the Palchyg Pilpilesi field section. The possibility of pairwise integration of ten adjacent horizons of the Kirmaki, Pre-Kirmaki, and Gala formations was identified, which would lead to an increase in fluid production rates and, consequently, improve the economic performance of field development.</jats:p>