COMPLEX SOLUTIONS TO INCREASE THE EFFICIENCY OF DEVELOPMENT OF MULTI-LAYER GAS AND GAS-CONDENSATE FIELDS

Relevance. To reduce capital costs and time of developing gas reserves and condensate from a multilayer gas condensate field, an urgent task is to justify the technology of simultaneous development of different by potential and/or filtration-capacitive properties reservoirs with gas supply to one gas gathering network. The solution of this problem is relevant both at the design stage and at the mature stage of field development in the mode of depletion of reservoir energy. Under the conditions of a sharp difference in the resource-energy potential and reservoir properties of the developing reservoirs, low-pressure wells with a certain backpressure in the gas gathering system stop flowing and are transferred to an inactive fund until the linear pressure decreases to the required level. The aim of the research is the rationale of integrated technological solutions aimed at improving the development of multilayer gas and gas condensate fields with a single gas gathering system. Objects: multilayer gas and gas condensate fields, which contain in their geological section the fragmented and different in terms of resource and energy potential and filtration-capacitive properties selected operational objects. Methods: analysis of the current state of developing gas production facilities of the Gubkinskoe field, analytical calculations of technological modes of operation of low-pressure wells, conducting pilot tests at gas wells of the Gubkinskoe field, a feasibility study of the results of applying the proposed technologies. Results. The authors have analyzed the current state of the Gubkinskoe field, characterized by a high differentiation of the current reservoir pressures in the reservoirs. Integrated solutions were proposed to ensure joint development of production facilities with gas supply to the general gas-gathering network, ensuring stable operation modes of the wells and based on controlling wellhead pressure by various technical devices. The technical and economic assessment of the impact of the presented complex technological solutions on the development efficiency of the reservoirs of the lower cretaceous deposits of the Gubkinskoe field was made.