根据试井基本理论,给出了无因次井底压降表达公式;采用轮南油田的流体、地质特征参数计算了油藏无因次压降曲线图版。基于该井实测的井底压降资料,利用无因次压降图版进行了注水优势流动通道识别,判别结果是存在优势流动通道。此外,示踪剂资料、生产动态资料和吸水剖面资料也证明该井存在注水优势流动通道,并确定了优势通道发育的纵向层段。 According to the basic theory of well test, the formula of dimensionless bottom pressure drop is given. Using the fluid and geological characteristic parameters of Lunnan oil field, the dimensionless pressure drop plot of reservoir is calculated. Based on the measured well bottom pressure drop data of the well, the identification of the dominant flow channel of water injection was carried out by using the dimensionless pressure drop chart. As a result, the dominant flow channel exists. In addition, the tracer data, production dynamic data and water absorption profile data also prove that there is a waterflooding dominant flow channel in this well, and the longitudinal channel section with dominant channel development is identified.