孤东油田防砂井产能预测研究

防砂是疏松砂岩油藏维持油井正常生产的主导措施。将产能比作为防砂措施效果的评价指标，考虑达西流和非达西流影响，计算4类防砂方法形成的附加流动区域的附加表皮系数，推导了计算产能比的公式。用流入动态表征油井的产能，用上述公式预测油井防砂后的流入动态，与防砂前油井流入动态对比，即可预测防砂后油井产能。该方法计算简单，需要的基础参数较少，计算结果可靠，便于现场应用。对孤东东6区防砂井的产能预测结果与实际较为吻合。图1表1参5

An integrated model for sand control well productivity prediction in the Gudong Oilfield

Productivity ratio (PR), the ratio of oil production index before and after sand controlling, is put forward to evaluate the effect of sand control measure on well productivity. According to the additional flow resistance areas formed by 4 sand control measures and corresponding skin factors, considering the non-Darcy flow, the calculation method of PR is presented. Inflow performance relationships indicating well productivity, the formula can be used to predict IPR and productivity after sand control measure by the IPR before sand control measure. This method needs few basic data and the results are credible. This model has been applied into Gudong Oilfield and the results are accordant to the real data.