注氮气剖面测井技术研究及其在吐哈油田动态监测中的应用

Study on Nitrogen Injection Profile Logging Technology and Its Application in Tuha Oilfield Dynamic Monitoring

七参数组合测井技术适用于正注笼统注气井的注氮气剖面测井,但该测井技术不适用于反注笼统注气井和分层注气井。基于现有注气剖面测井技术,结合氮气特性,改进测井工艺,研制出用于氮气的特制同位素示踪剂;优化测井技术,形成采用特制同位素示踪剂的示踪流量测井技术。这2种测井技术结合使用,能满足笼统注气井和分层注气井注氮气剖面测井需求,提高了注氮气井的注入剖面解释质量和准确率,为吐哈油田调整开发方案提供了动态监测依据。

The seven-parameter combination logging technique is suitable for nitrogen injection profile logging of positive injection general gas injection wells,but this logging technique is not suitable for reverse injection general gas injection wells and layered gas injection wells.Based on the existing gas injection profile logging technology,combined with the characteristics of nitrogen,the logging technology is improved,and the special isotope tracer suitable for nitrogen is developed.The trace flow logging technology using this special isotope tracer is formed by optimize logging technique.The combined use of these two logging technologies can meet the logging requirements of general gas injection wells and layered gas injection wells,at the same time,improve the injection profiles interpretation quality and accuracy ofnitrogen injection wells.The new method provides a dynamic monitoring basis for Tuha oilfield adjustment and development program.