童氏含水率预测方法的改进

An Improved Method for Predicting Water

童宪章标准图版关系曲线是通过国内外中高渗透水驱油藏统计出的规律,并不能客观反映具体油藏的实际特征。针对利用童宪章标准图版关系曲线评价油藏含水率与采出程度关系出现实际值与理论值存在较大偏差的情况,根据水驱油藏静态特征参数、渗流规律及动态含水率变化,运用水驱特征曲线对童宪章标准图版关系曲线公式中常数7.5进行了推理,推导出替代常数7.5的关系式。通过实例验证,改进的图版评价含水率变化更符合油藏实际,具有较强推广应用价值。

Tong Xianzhang' s chart plate relation curve is a statistical regularity summarized by medium and high permeability reservoirs at home and abroad and it can not objectively reflect actual characteristics of a particular reservoir. Large deviation exists between the actual value and theory value obtained from evaluation of reservoir water content and recovery degree by using Tong Xianzhang' s chart plate. According to static characteristic parameters, permeability rule and dynamic moisture content change of water flooding reservoir, applied is the water flooding characteristic curve to analyze the constant 7.5 in Tong Xianzhang' s chart plate relation curve formula for moisture content evaluation and derived is the relational expression instead of the constant. Actual application shows that the improved chart plate can reflect actual reservoir moisture content change in an even better fashion and has strong application value.