The most important prerequisite for sustainable development of a territory is the building of a system of regional strategic management of the services sphere. The objective of the article is to develop an organizational mechanism for implementation of a region development strategy in the circumstances of servicization. The article presents characterization of the regional service economy and highlights its specific features. The authors have identified the problems and necessary adjustments of the system of regional management from the point of formation of the regional service economy. By comparing the existing methods of budgetary planning of the regional development, we have proven the high efficiency of the target-oriented technology; justified the necessity of making organizational changes in the administration of the executive power, including the transformation of rules and regulations for the formation and implementation of a development strategy in order to effectively manage the process of formation and development of the service economy. It has been proven that the presence of a dedicated structural unit in the system of executive bodies will allow to push the service sector of the economy of the "south" of the Tyumen region to the new level by improving the management of the processes of the regional economy conversion, and, as a result of the management, the efficiency of the executive bodies in achieving sustainability of the regional development.

The paper deals with the issues of strategic plan-ning for the oil and gas service enterprise development and defines its features in a dynamically changing external environment. The study systematizes the most significant macroeconomic factors of the external environment and the factors of the immediate environment that affect the development of the oil and gas service enterprise at the present stage. The concept of the strategy for the oil and gas service enterprise is defined. The indicators for assessing the competitiveness of services provided by the oil and gas service are proposed and refined considering the strategic positioning of the company. Besides, the characteristics of the competitive advantages of services and the attractiveness of the oil and gas service market are highlighted. The authors developed an algorithm for selecting the development strategy for the oil and gas service enterprise; the composition and content of operations within the stages of the algorithm were individualized. A KPI tree was designed to assess the effec-tiveness of the strategy of the oil and gas service enterprise.