The Research Of Evaluation Criterion Of Water Floodingdevelopment And Object Optimization In Liaohe Oil Region

I have been taking on oil geology exploitation for more than ten years in the field, discover that, at work, which geologic condition fits for water flooding development, which geologic condition is unfit for water flooding development, are short of quantification criterion; What quality of water should be chosen in different oil reservoir geologic condition, is defect from definite criterion. The appreciation for the effect of water-flooding oil field is only single index and qualitative, is short of comprehensive and normalized quantitive evaluation. The above questions bring great difficulty to workers who take on oil geology exploitation. For the solution of the questions above, I choose Oil reservoir water flooding development evaluation standard research and infusion objective optimization of different geologic condition in Liaohe oil region as research theme, and establish three criterions by research. First, on the basis of analysis and research to the parameters of dynamics and static oil reservoir, I apply normality distribution rule statistics method to establish grey system comprehensive evaluation criterion to geologic factors, quantitatively evaluate which geologic condition fits for water flooding development, appreciate for the effects obtained and anticipated after water flooding; Second, at the aspects of the effects of water flooding development, apply the probabilistic statistics method, quantitatively obtain index-evaluation coefficients such as water-bearing escalating rate, water-storing rate, and naturally declining rate, and so on, associate with grey system comprehensive theory method, establish grey system comprehensive evaluation criterion to the effects of water-flooding exploitation, make it from single-index evaluation transform to multiple-index comprehensive evaluation; Third, at the aspects of oil reservoir with different geologic condition demanding the quality of water which is used for water flooding, according to the average atmosphere permeability of layer less than 100 mD, 100~600 mD, more than 600 mD, establish the evaluation criterion about oil reservoir with different geologic condition demanding the quality of water which is used for water flooding. In the end, I apply grey system comprehensive evaluation criterion of geologic factor to comprehensively appreciate the 30 blocks which are not used for water flooding, optimize out of 24 blocks, cover oil geology reserves 7693×104t, put them into water flooding, anticipate that it may increase recoverable reserves 385×104t, recovery ratio advance 5%.The outcomes of the theme not only favor the advancement of the exploitation level, but also advance the vocation technology horizon and the management horizon.