The Research Of Waterflood Development Evaluation In Jingbian

This oilfield was put into development in 2009 and the development time was earlier.In order to improve the efficiency of the development,this area began water flooding in April 2011,after these years,it is necessary to evaluate the effection of the water flooding,to improve the final recovery of the reservoir and provide the basis of rational and efficient development policy for the next step.In this paper,application of oil geology,reservoir engineering theory and methods,are used to study the characteristics of reservoirs in Jingbian Dayangwan oilfield,from the study of reservoir characteristics,sediment sicrofacies,sand body display,sensitive properties,four sexual relations,then using dynamic monitoring data in the research area,make a systematic study on capacity analysis,the law of diminishing,effection of injection,oil recovery strength and speed.next the theory and technology of reservoir engineering were used to evaluate the water rate of increase,water consumption rate,water storage rate and water flooding index in the study area,finally,the evaluation of the water flooding and control degree,reservoir pressure,water flooding recovery and other indicators for the study area to develop a solid and strong foundation.The study shows that this region belongs to metamorphic sedimentary types of meandering river,the reservoir is mainly composed of feldspar sandstone and lithic feldspar sandstone,the primary pores is mainly developed,the heterogeneity of the reservoir is relatively strong.The decline of production in this area is mainly expressed as exponential decline.At present,the rising rate of water is within a reasonable range,but the water flooding index is still low,so the water injection needs to be strengthened.The trends of water retention and content change with time are basically consistent,basically stable.The control level of water flooding in the study area was poor and the pressure level was low.Finally,reasonable parameters such as oil recovery strength,oil recovery strength,oil recovery speed,injection ratio and water injection strength were formulated,and adjusted in real time according to reservoir dynamic change.