Low Permeability Reservoir Well Completion And Cementing Technology Research And Application

As we know,low permeability reservoir usually choose horizontal well fracturing completion approach to make production benefit maximization,but the horizontal structure is complex,both in drilling stage and completion stage there are certain difficulties,especially effective cementing is difficult to get,cuttings are difficult to remove,perforation quality is hard to guarantee,cement damaged easily cause accidents,so the choice of cement slurry is especially important.This requires in reservoir development and the choice of slurry with good fluidity,curing thickening,at the same time requires a certain filter and flexible performance.In order to effectively ensure the smooth progress of low permeability oil and gas well completion work,improve the sedimentation stability of the cementing operation,eliminate the influence of the horizontal well drilling cuttings bed and slurry free liquid trough,reduce the risk of the cementing slurry filter and the pollution caused by leakage to the reservoir,ensure effective cementing betweencasing and formation,effective cementing formation and formation,control and elimination of horizontal Wells reservoir fluid affect the cementing quality,improve the cement integrity in the process of perforating and fracturing under high impact,reduce developmentcostsof low permeability oil and gas fields,improve the efficiency of oil and gas field development,this paper carried out cementing technology researchof low permeability oil and gas fields.Through fully research at domestic and abroad due to the production operation,especially the fracturing operation,lead to the damage of cement mantle,do analyzes from the flaws of the cementing slurry system and working procedures to find the reasons of damage,provides the basisfor the low permeability oil field fracturing well cementing design.In this article,we expound the research status of low permeability reservoir well cementing technology,from low permeable oil fieldsclastic evaluation method,impact resistant contains no free liquid filter cement slurry,to study the low permeability oil and gas field horizontal well fracturing completion,in order to strengthen the cement slurry curing and migration control,improve the flexibility of cement slurry and better guide the actual work.Through a comprehensive study of domestic and abroad literatures and field data,on the basis ofthe cementing design in low permeability oilfield fractured well,get proper cementing slurry system.