Well Testing Analysis For Fractured Well In Tight Oil Reservoir

The tight oil reservoir that has low porosity,low permeability and complex water seepage law features is a kind source of great potential and distribute widely in china.Compared to other conventional oil reservoirs,fluid flowing in the dense oil reservoir mainly occur in Stratigraphic system and fracture system which is affected by stress-sensitivity and TPG.So building a reasonable well testing model based on mechanism research is very important.Based on the dense reservoir characteristics,this paper analysis rock type,pore type and physical characteristics,etc.Based on the geological characteristics of dense oil reservoir,this paper study the flowing mechanism in dense oil reservoir.Due to the existence of stress-sensitivity and TPG,the flowing characteristics in the dense oil reservoir is different from conventional reservoir.Therefore,it is necessary to establish a well testing model that consider stress-sensitivity and TPG,solve this model and analysis parameter sensitivity,with a finding that stress-sensitivity and TPG are main factors influenced on tight reservoir pressure.