针对油井压胀松动增产后产生压胀松动区,基于稳定流理论,推导出考虑启动压力梯度影响的应力敏感油藏的产量预测模型.通过实例分析了各因素对产量增产规律的影响.研究结果表明:在不同油藏基质渗透率和不同压差条件下,油井产量随着压胀半径的增大而呈凸型上升趋势,且上升幅度不大；油井产量随启动压力梯度的增大而呈近似线性下降趋势,且n值越小,油井产量随启动压力梯度增大的下降幅度越小；油井产量随渗透率变形系数的增大而呈凹型近下降趋势,且m值越大,油井产量随渗透率变形系数的增大先快速下降后趋缓.%In view of the loosening area of the oil well in low permeability oil reservoir with stress-sensitive,based on the steady seepage theory,with the influence of the start-up pressure gradient in the low-permeability oil reservoirs with stress-sensitive taken into account,a prediction model was established for the oil well,and the influencing factors of stimulation law was analyzed.The result shows that along with the radius of the dilatancy enlargement,the oil well productivity continues to incline in different the reservoir permeability and production pressures.The oil well productivity decreases with start-up pressure gradient at linear relationship,and the descending range of the oil well productivity was smaller with the start-up pressure gradient enlargement when the n value is little.The oil well productivity decreases with the deformation coefficient of permeability at concave relationship,and the descending range of the oil well productivity was sharp dropping in the earlier and slow decrease in the later with the deformation coefficient of permeability enlargement when the m value is big.
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