Research On The Development Technology Of Hot Water Injection In Chang109 Block Changchunling Oilfield

Changchunling oilfield is located in the southeast uplift of Fuyu No.2 structural belt on the southern Songliao Basin,because the region has a shallow reservoir(400m),the formation temperature is low,the oil flow is lower than or close to the wax precipitation temperature in the formation conditions,conventional waterflood development likely to cause cold damage to the reservoirs,resulting in crude oil in the reservoir conditions the high viscosity,poor mobility,part has the characteristics of heavy oil and high pour point oil,and because the original reservoir pressure coefficient is low,the formation energy shortage,caused by oil production after the rapid decline of production,to the overall development.Based on a detailed study of the geological characteristics of Chang109 block reservoir,through summarizing the leading conventional waterflood development and development laboratory simulation and calculation,the design and optimization of the water injection development plan of this area,after implementation of the project,analyzed,water flooding index evaluation and well pattern adaptability evaluation of water flooding development dynamic.On the basis of the comprehensive assessment that hot water flooding the overall design can improve the long 109 block formation pressure,temperature,greatly reduce the decline rate of oil field development,enhance oil recovery,can be used as main developing technology to similar reservoir;also put forward the next step optimization potential direction and well pattern adjustment suggestion.Study on Chang 109 block hot water flooding technology,has the important meaning to the Changchun Hill oilfield economic effective development,with reference to the domestic and foreign similar shallow low temperature and low pressure reservoir development:...