The modern development stage of hydrocarbon raw materials is characterized by the redistribution in the structure of reserves – reserves concentrated in reservoirs of complex structure that are characterized by non-homogeneity of the capacity and the area of fields, are becoming more and more important. This tendency prompts us to pay special attention to the fields that shift to the stage of declining production, and the majority of gas fields in Western Siberia nowadays belong to this category. Monitoring the shift of a gas-water contact (GWC) in such conditions will allow smoothly exercising control over the production of reserves, increasing the period of waterless operation of gas wells and extending the inter-repair period. Moreover, flooded wells are unlikely to be further commissioned due to the low energy of the bed and structural peculiarities of the old production well stock. The works presents an additional method for the diagnostics of the shift of GWC which is based upon the analysis of the asynchronical results of gas and dynamic research (GDR) of wells.
Keywords: MONITORING AND CONTROL OVER THE DEVELOPMENT OF GAS FIELDS, GAS-WATER CONTACT, GAS AND DYNAMIC RESEARCH OF WELLS, STAGE OF DECLINING PRODUCTION OF GAS.