氧活化测井仪数据采集方法研究  

Data Acquisition Method of Oxygen Activation Logging Tool

作　　者：张羽 ZHANG Yu(Daqing Branch,China Petroleum Logging Co.,Ltd.,Daqing 163000,China)

机构地区：[1]中国石油集团测井有限公司大庆分公司,黑龙江大庆163000

出　　处：《测控技术》2020年第9期99-102,107,共5页Measurement & Control Technology

摘　　要：原有氧活化测井仪施工工艺复杂,一次下井只能测量一个方向的水流,施工效率低。为解决这个问题,重点开展了探测器排布设计、探测器响应特征研究、氧活化放射性活度研究和信号提取方法研究工作。在设计中创新理论方法,结合放射性活度理论突破了优化时间谱模拟方法和GaussMod函数来描述时间谱特征等技术难点,进而优化了氧活化测井仪数据采集工艺,增大了仪器流速探测范围,拓宽了仪器施工范围,仪器一次下井即可获得全部测井资料。应用该研究成果设计、制造了Φ38双向水流氧活化测井仪。该仪器在现场实验中资料解释符合率达到90%以上,在油田三次采油生产中优势明显,可解决调剖、堵水、找漏找窜和动态监测等技术难题,为油田工程技术改造提供技术支持。The original oxygen activation logging tool has a complicated construction process,and can only measure water flow in one direction once downhole,resulting in low construction efficiency.In order to solve this problem,the detector layout is designed,and the detector response characteristics,oxygen activation activity and signal extraction method are studied.In the design,the theoretical methods were innovated,combined with the radioactivity theory,the technical difficulties such as optimizing time spectrum simulation method and Gauss Mod function describing time spectrum characteristics were broken through.Then the data acquisition process of the oxygen activation logging tool was optimized,the detection range of the tool flow rate was increased,and the scope of tool construction was widen.All logging data can be obtained by the tool once down hole.According to this research results,theΦ38 bidirectional water flow oxygen activation logging tool was designed and manufactured.The coincidence rate of data interpretation reached over 90%in the field experiment.It has obvious advantages in tertiary oil production in oilfield,which can solve the technical problems such as profile control,water shutoff,leakage and channeling detection and dynamic monitoring,and provide technical support for oilfield engineering technological transformation.

关 键 词：氧活化 数据采集 测井 动态监测 探测器 

分 类 号：P631.63[天文地球—地质矿产勘探] TP29[天文地球—地质学]