Obneftegazgeologia PJSC is a Russian upstream energy and geological exploration company engaged primarily in the prospecting, exploration, appraisal, and development of oil and natural gas fields across Western Siberia. The company operates through specialized business segments encompassing Geological Exploration and Geophysical Surveys, Hydrocarbon Production and Field Development, and Drilling and Field Support Services. Its comprehensive portfolio of products and services includes 2D and 3D seismic survey data acquisition, processing, and interpretation; geological modeling and reservoir engineering; exploratory and appraisal well drilling; stratigraphic and structural core drilling; geophysical well logging and downhole telemetry; crude oil and associated petroleum gas extraction; well testing, workover, and re-entry operations; hydrogeological and geochemical surveys; and field infrastructure preparation and subsoil management services. Obneftegazgeologia PJSC primarily serves domestic oil and gas extraction operators, state geological authorities, and regional energy distributors. The enterprise traces its operational origins to Soviet Western Siberian geological expeditions established in 1976, was formally incorporated as a joint-stock company in 1994, and is headquartered in Surgut, Khanty-Mansi Autonomous Okrug - Yugra, Russian Federation. In recent operational and corporate developments, Obneftegazgeologia PJSC has advanced the modernization of its geophysical surveying equipment and digital reservoir evaluation platforms to optimize recovery from mature subsoil areas; restructured its exploration portfolio to target deep-seated Jurassic and pre-Jurassic formations; adapted its corporate governance frameworks in alignment with Moscow Exchange regulatory requirements; and expanded strategic service partnerships with regional drilling contractors and oilfield service providers to enhance well completion rates and operational efficiencies in the Khanty-Mansi region.