光纤技术在油田测温和光电成像方面的应用

Application of Optic Fiber Technology in Temperature Measuring and Photoelectric Imaging

从射线光学、波动光学的角度阐述了光纤传播原理。介绍了光纤光栅探测器、分布式光纤温度传感器等光纤测温技术的工作原理和特点,并在直井注蒸汽、水平井生产的SAGD先导试验区——辽河油田DU84区块进行了现场应用,实现了区块地层温度场的连续监测。介绍了光纤光电成像技术的工作原理,并在辽河油田套管检测修复、射孔质量检查、出水出砂位置确定、井下落物检测、工程打捞等方面进行了应用,有效地反映了井下套管的真实全貌。

This paper expounds the principals of the optical signals transmission in fibers ,which is based on ray optics and wave theory.It also introduces on the operation principals and characteristics of fiber temperature measuring technology such as fiber raster detector and distributes fiber temperature sensor.These technologies are applied in steam flooding vertical well and horizontal well production of SAGD pilot test area in Liaohe Block DU84,which makes the continuous monitoring for formation temperature field come true.At the same time ,this article also introduces on the operation principals of photoelectric imaging technology and the application of this technology in casing and perforation quality monitoring,water and sand production position determining,downhole junk detecting and engineering salving,which effectively reflects the real features of downhole casing.