Reservoir Description And Evaluation Of Chang 6 In Zhengzhuang Of Wuqi Region

The reservoir buried depth of Zhengzhuang oilfield Wuqi area is shallow, the main exploitation layer is Chang 6 reservoir group, low formation energy and oil well production, the understanding of the geological features and the characteristics of the reservoir is not fine, reservoir description and evaluation should be further improved.In order To recognize the geological features of the reservoir, firstly studies the features of reservoir formation, determine the dividing line of the Chang 6 reservoir, research the sedimentary background and sandbody distribution of reservoir, recognize the reservoir petrology, and then determine the type of reservoir, The characteristics of pore fluid and pressure temperature in reservoir are analyzed, Finally, the heterogeneity of reservoir is determined.Analysis of core data, a porosity interpretation model is established, the oil saturation of the reservoir in this region was calculated by using different methods, The regression formula of permeability and porosity is established to solve the permeability of reservoir, The lower limit of porosity and permeability of the reservoir are further determined, Calculate the reserves of 6 reservoirs, The oil test features of the wells found almost no natural productivity, the formation energy is obviously insufficient.To evaluate the effect of reservoir development, it is found that the formation energy is needed to improve the output, the feasibility of water injection is demonstrated by studying the necessity of supplementary formation ability, and forecasting the reservoir recovery of water injection, and the development layer is further divided, Calculate the density of well pattern, and determine the reasonable distance of well pattern, Study the well production and water injection quantity of the Chang 6 reservoirs, Ultimately determine the reasonable injection production ratio of oil reservoir.