The Development Of Technology Policy To Adjust The Boundaries Of Theory And Its Reservoir In The Sand Dunes Of The Well Area Applications

Researching the adjusting boundaries of the technique and tactics has most guiding significance for the adjustment of the exploitation plan.According to the real condition of Shaqiu 5 oil field, the development potential is researched by the empirical formula method, waterflood characteristic curve method, forecasting model method and fuzzy comprehensive evaluation method, and the development potential of Shaqiu 5 oil field 24. 32% is obtained. A new method to research the characteristic of water producing—sweep-efficiency-modifying method is put forward, Combined with other methods, such as empirical formula method, characteristic curve of water drive method and real production data matching method, the characteristic of water producing is studied, and the result shows that when the ratio of total oil produced to OOIP is less than 14%, the water cut increases very fast, while when the ratio of total oil produced to OOIP is more than 14%, the water cut increases slowly. The performed producing technique and tactics are evaluated, the result is comparatively good. The adjusting boundaries of the technique and tactics, including the level of formation pressure, oil recovery velocity, water injection rate, injection production ratio and so on, are systemically and deeply researched from different aspects, and the reasonable level of formation pressure of Shaqiu 5 is 20. 6MPa, the reasonable oil recovery rate is 1. 0%, the expressions of the reasonable injection to production ratio and the reasonable rate of water injection are respectively obtained, which provide reliable basis for designing adjusting plan of reservoir exploitation.