边水油藏调剖调驱潜力评价与效果分析

Potential Evaluation and Effect Analysis of Edge Water for Profile Control and Waterflooding

针对G油藏的实际地质情况,通过考虑剩余油分布、可采储量、油藏非均质性以及水流优势通道等参数对其调剖调驱潜力进行了评价。运用双对数模型、威布尔模型、俞启泰模型、灰色系统模型对G油藏产油量进行了预测。对比调剖调驱后的产油量与按自然递减计算得出的产油量,来评价调剖调驱增油效果,并结合油田实际生产数据进行了相关计算。计算结果表明,G油藏通过调剖调驱治理边水是可行的。认为G油藏调剖调驱前用威布尔模型预测较好,调剖调驱后用灰色系统模型预测较好。

The potential capacity was evaluated based on the geological feature of G Reservoir according to the remaining oil, recoverable reserves, reservoir heterogeneity and the fluid advantage channel. The oil production level was predicted based on double log model, Weibull model, Yuqitai model and gray system model. By comparing oil production level before the regulation of water injection profile with oil production level of natural depletion, the effect of oil displacement was evaluated. Related calculation is performed in combination with production data. The result indicates that the profile control and oil displacement regulation are feasible. It is considered that Weibull model is better to predict before the profile control and the gray system model is better to predict after the profile control.