Analysis and Treatment Technology of Scaling Causes in G83 Reservoir Well Boreholes
In the process of reservoir development,often accompanied by the existence of wellbore scaling,scaling type is also diversified.Through the analysis of oil well scale samples,wellbore scale is mainly the crystallization of insoluble salts.Its main components include:CaCO3,CaSO4,BaSO4,SrSO4,MgCO3,FeCO3,FeS,Fe(OH)3,Fe2O3,Mg(OH)2,SiO2,NaCl.The single type of scale is seldom seen in oil field scale,which usually exists in the form of mixed scale and is dominated by some insoluble salt scale.In this paper,through a series of ideas such as carrying out scale sample analysis,inducing scale ion types,analyzing the main scaling causes,and clarifying the scaling mechanism,it is determined that at this stage,the scaling of production wells in G83 reservoir is mainly carbonate scale,and contains a small amount of sulfate scale(mainly in the form of Barium sulfate and Strontium sulfate),which is mainly distributed near the perforation section and the tail pipe,This provides effective guidance and ideas on how to implement the next step of wellbore cleaning and anti scaling work in G83 reservoir.
scaling reasonsprevention of scalingremove scaling
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