A Production Potential Analysis And Measures Optimization Of Sandstone Reservoir

Nowadays,most oilfield have entered middle or later periods of the development stage in our country.In the process of long-term oil and gas fields development,the underground situation of fluid seepage becomes increasingly serious,and the development form is getting more and more complicated too,which makes a lot of difficulty in residual oil exploitation.This paper is mainly aimed at C oilfield J fault block reservoir,analyzing the exploration and geological characteristics of the oilfield blocks from the structural characteristics,reservoir characteristics,fluid properties,formation temperature and formation pressure angles.At the same time,the production status of oil field block is divided and evaluated.Based on the static data of each reservoir,the dynamic data of production and the dynamic monitoring data,the effects of current development technology policy,development adjustment measures and geological factors on reservoir development effect are discussed.The evaluation of development effect was carried out from four aspects: water driving condition,water content change,water injection efficiency and reservoir decline trend.Then,the evaluation index system and evaluation standard of water injection development effect are established.Reservoir engineering,mathematical statistics,fuzzy mathematics and other theoretical methods are used to evaluate the overall development effect of oil reservoir,the comprehensive evaluation system of development effect is established based on each index.On the basis of the geological model,a numerical simulation model is established to fit the history of reservoir dynamic production,through the analysis of the distribution of remaining oil,the remaining oil distribution law in the plane and longitudinal is studied to find out the remaining oil enrichment area.Then the optimization of old mining and oil well mutually explanatory are carried out.The recovery mode and the timing of oil wells and other aspects of in-depth study are analyzed.According to the analysis and evaluation of geological characteristics and dynamic analysis of block development,combined with the numerical simulation,the more accurate residual oil distribution is obtained.Finally,the fracturing optimization studies of single well are carried out,and the factors influencing the fracturing effect are analyzed and the fracturing construction parameters are optimized.The rationality and practicability of the scheme are verified by case analysis.