Abstract
This study investigates the role of hydrodynamic and hydrochemical conditions of formation fluids in the formation and preservation of hydrocarbon accumulations in the northeastern part of the Amu Darya sedimentary basin (Bukhara–Khiva region, Uzbekistan). Particular attention is given to the interaction between groundwater flow and hydrocarbon migration within Jurassic deposits and their influence on the spatial distribution of oil and gas accumulations. The research is based on an integrated analysis of geological and hydrogeological data, including formation water properties, hydrodynamic parameters, tectonic framework, and lithological characteristics of productive horizons. The synthesis of these data enabled identification of fluid flow patterns and clarification of their role in hydrocarbon migration, accumulation, and preservation. The results demonstrate that groundwater plays a key role in transporting hydrocarbons and forming accumulations under favorable structural and hydrodynamic conditions. The most перспективные zones are associated with hydrodynamic anomalies linked to tectonic structures and lithological barriers. The hydrodynamic regime of Jurassic deposits significantly controls hydrocarbon concentration and preservation. These findings refine prediction criteria for hydrocarbon potential and can support more effective planning of future exploration activities.