Parameter Optimation of Polymer Flooding in S Block Based on Partial Factor Design and Response Surface Method
Aim at issues such as complex influence mechanism among parameters and difficulty in quantitatively evaluating production performance during polymer flooding of offshore oilfield,a reservoir conceptual model was established based on numerical simulation method.the sensitivity experimental scheme was designed according to partial factor design method,the degree of influence of factors on the recovery factor of polymer flooding was analyzed,the prediction model of polymer flooding was derived through regression analysis.The results shown that,parameters affecting the degree of recovery from large to small are,injection time,injection rate,formation rhythm,irreducible water saturation,vertical to horizontal permeability ratio,horizontal permeability,polymer concentration.The prediction model based on partial factor design regression has a high degree of fitting,which can quantitatively evaluating the impact of various development factors on the production performance of polymer flooding.
quantitativelypartial factor designsensitivity analysisprediction model
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