| Water flooding has been used in Shengli Oilfield for more than 40 years,Shengli Oilfield has entered the ultra-high water cut stage(water content is greater than 90%),District Ahas entered the special high water cut stage(water content greater than 95%).Liquid extraction is an important means to increase oil production.Therefore,a calculation model suitable for the reasonable liquid production of ultra-high water-bearing oilfields nd specific adjustment measures are proposed,which is of great significance to the old oilfields.In this paper,based on the theoretical basis,an indoor flow tube experiment was carried out and the mathematical model of single well production characteristics was proposed,and the characteristic value of the current development status of the reaction was introduced innovatively.To determine the calculation method of multi-well production,this paper used MATLAB to design a software.Aiming at the reasonable liquid production quantity,the specific adjustment process measures were proposed.The optimization of the lifting mode,the research of the potential layer hole filling technology,the sand control technology and the water shutoff technology optimization research were carried out through indoor experiments and mine statistics.For the typical wells,the example calculation of the reasonable liquid production amount and the example application of the process adjustment measures were carried out to determine the specific adjustment plan.The calculation shows that the GX8-8 well should be extracted with liquid volume of 30.57m~3/d by replacing the?105mm large-diameter pump.It was recommended to choose a wire-wound screen,a mesh screen or a composite screen as a specific sand control tool;for the GX3-16 well,the independent screen sand control method was adopted,and the calculated equivalent capacity ratio is 0.9978;the plugging experiment shows that the comprehensive production level was improved.16.3%,the moisture content decreased by 40%,with good sealing effect. |
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