Composite Technologies for Enhance Oil Recovery of Fractured Reservoir--An example from Huoshaoshan Oilfield

Huoshaoshan oilfield is a typical fractured sandstone reservoir with very low permeability,very serious heterogeneity and high angle fractures.And serious reservoir watered-out or water breakthrough caused obvious production decline during the oilfield development.Through four-period comprehensive controls and various field technological tests and stable production measures,the development efficiency of this oilfield has been improved significantly,realizing its continuous stable production.In the comprehensive controls,taking detailed water injection,detailed oil production,detailed well stimulation treatment as key technologies,study on the matching technology was carried out.The technological development and integration with each other such as combination of mechanical string and chemical processes and technologies formed comprehensive development technologies for EOR and gained good results,which lays a technical foundation for stable production of Huoshaoshan oilfield.