The influence of nitrogen injection duration at the initial gas-water contact on the gas recovery factor

This paper reports a study that employed digital three-dimensional model of the gas condensate reservoir to investigate process nitrogen injection at boundary initial gas-water contact different values duration. The calculations were performed for 5, 6, 8, 10, 12 and 14 months Based on modeling results, it was found increasing duration decreases operation time production wells until breakthrough non-hydrocarbon gas. analysis technological indicators development, established introduction technology into ensures reduction in volume water production. cumulative 5 is 197,3 thousand m3; – 0,038 m3. According results from statistical treatment estimation data, optimal value determined, which 8,04 months. ultimate recovery factor period 58,11 %, development productive depletion 34,6 %. research efficiency has been determined order slow movement gas-saturated horizons. allow improvement existing technologies hydrocarbon fields under conditions drive. use carried out will make possible reduce increase factors 23,51 %