Fuyu Reservoir Sensitivity Study

Reservoir damage is the main reason of the external fluid and formation fluid is not compatible or compatibility of the reservoir sensitivity damage,leading to solid phase particles migration,clay mineral swelling,congestion rock tunnel,the rock properties and reservoir laminar liquid property change.By drilling fluid and completion fluid and perforation compaction with influence,cause the loss of porosity,permeability,especially for low permeability reservoir,oil pollution has become the important factors that affect oilfield development effect.Once the reservoir damage by acidification and fracturing renovation measures,such as make a certain degree of recovery of the oil well production,but measures itself makes reservoir damage.Three zhao fuyu oil layer is formed in the ancient lake basin under the high water system tract mainly delta distributary plain subfacies deposition,eight factory in fuyu oil reservoir air permeability reservoir of 0.1×10^-3?m2⁵.22×10^-3 mu mu between m²,is a low permeable reservoir.Reservoir clay minerals mainly illite,chlorite,followed by montmorillonite /,montmorillonite/green mixed layer and large potential reservoir damage degree and the development process of reservoir are susceptible to damage.Has now completed putaohua reservoir completion fluid optimization,but did not carry out suitable for completion fluid evaluation of fuyu reservoir optimization work.Mainly guanidine gum fracturing fluid,modified guanidine gum fracturing fluid system,fuyu oil layer state 6 block test the super guanidine gum fracturing fluid,but not to the reservoir damage caused by fracturing fluid is studied.