Study On The Interpretation And Evaluation Of Well Test Data In QD Reservoir

QD reservoir has entered the development stage of polymer development in September 2014.The production of oil has been enhanced after injecting of polymer.Due to the strong heterogeneity of the reservoir,there was a phenomenon that the crossflow of polymer was presented in some regions.In view of this problem,this paper makes a detailed explanation and evaluation of the well test data of QD reservoir.By means of well test software,we get the welltest curve and interpretation parameters?plotted the distribution map of permeability at different time?analysied injection pressure?liquid profile and the change of well test curve and established the relationship between the effect and the welltest.Finally,based on the above research numerical test models were established to predict the concentration and injection rate of the subsequent development.The main work and researchs are as follows:(1)Analyzing different stages data of welltest by software of Saphir,and plotteing the distribution map of permeability and other parameters.(2)Giving the way for Recognizing welltest curves characteristics of nterference of well and advantage of the channel.(3)Analyzing the infiltrating fluid characteristics at different stages and finding the divergence about infiltrating fluid characteristics and welltest curve in different stages.(4)Studying the changes of test well curve characteristics between waterflooding and polymerlooding and establishing the relationship between the effect of enhancing production and welltest curve.(5)Studying the numerical welltest model and predicting the optimal concentration and velocity of injection in the later stage.