用高强度同位素测试基线异常高井的吸水剖面

Using high intensity isotope tracer to test Water injection profile of high baseline abnormal wells

在吐哈温米油田进行放射性同位素示踪注水剖面测井时,出现了一些测试的自然伽马基线在目的层段或局部异常高值的井,采用常规放射性同位素示踪注水剖面测井方法,曲线统计误差绝对值增大,射孔层吸水的幅度淹没在了基线异常高值的范围内,解释误差增大。通过改进常规测井施工工艺技术,改善资料处理解释方法,用高强度的同位素131Ba-GTP微球,增大替注量测试该类井获得了成功。

There are great high baseline abnormal wells when we carry out radioactive isotope trace logging in Tuhawengmi oilfield.If used normal radioactive logging technology,the interpretation errors will increase because statistic error absolute values of the curve increases and the curve amplitudes of performation zone is great small than that of abnormal baseline curve.Through improving technology and amending curve,and increasing radioactive isotope intensity and amount of water injection,we acquire good results.