注入剖面双示踪测井技术研究及在华北油田应用

Study and Application of Injection Profile Double-tracer Well Logging Technology in Huabei Oilfield

采用双示踪测井技术进行注入剖面测井,可以有效消除同位素微球沾污管柱、进入大孔道地层等对传统同位素微球示踪测井资料的影响,准确反映层段吸水情况。双示踪测井技术一次下井可获取井温、放射性示踪流量和同位素测井资料,通过井温资料定性判断吸水层,利用示踪流量测井资料确定各层绝对吸水量,由同位素测井资料确定吸水层的吸水厚度,3种方法结合提高了注入剖面测井解释成果质量。该方法在华北油田注入剖面测井中得到了广泛应用,取得了很好的效果,提高了注入剖面解释成果的准确率,为调整开发方案和工程作业提供了可靠依据。

The double-tracer logging technology of injection profile logging can effectively eliminate impact of conventional isotope-microspherical-tracer well logging data,such as,isotope microsphere contamination column and enter the big pore formation.It can accurately reflect the level of water absorption With one running in the hole,we can obtain temperature,flowrate and isotope logging data,the temperature data are used to qualitatively interprete water layer;the tracer flowmeter logging data are used to determinate the absolute water absorption of each layer;the isotope logging data are used to determinate the water entry thickness.The quality of the injection profile logging interpretation results is improved by combining the above 3 methods.Double-tracer well logging technique has been widely applied in injection profile logging in the Huabei oilfield. A very good effect has been acquired and accuracy of injection profile interpretation has been greatly improved,which provides a reliable reference for adjustment of development plan and engineering operation.