摘要
稠油热采井的监测一直是油井测试工作的难点,尤其是对注气剖面的测试,有助于了解吸气剖面的信息,确定油藏位置,优化注气质量具有重要的意义,分布式光纤目前是实现注汽井剖面温度监测的唯一办法。在实际测试过程中,井下高温油气条件下光纤氢损现象加剧,使光信号传输衰减增大,将会造成数据失真,影响测试精度,甚至无法测量数据,同时,测试光纤的使用寿命变短。因此需要对光纤阻氢工艺进行优化,本文重点分析氢损的机理,介绍了几种沉积工艺,研究了沉积工艺对对光纤阻氢性能的影响,主要应用了等离子体化学汽相沉积(PCVD),并提出了优化的方案。
Monitoring of heavy oil thermal recovery has always been the difficulty of the oil well testing,especially for the profile of the gas injection test to help suction profile information to determine the reservoir position and optimize the quality of the gas injection is of great significance.Distributed optical fiber is the only way to achieve the sectional temperature monitoring of steam injection wells.In the actual testing process,the phenomenon of hydrogen loss of optical fiber in the high-temperature oil and gas under conditions of downhole intensified causes the optical signal transmission attenuation increases,will result in data distortion affect test accuracy,even can not be measured,mean while the life of the optical fiber becomes shorter.Therefore it is necessary to optimize the optical fiber hydrogen barrier technology.This article focuses on the analysis of hydrogen loss mechanism,introduces several deposition processes,the affect of deposition process to the main applications of fiber hydrogen barrier performance,plasma-enhanced chemical vapor deposition （PCVD）,and optimized solutions.
出处
《自动化技术与应用》
2013年第10期65-67,73,共4页
Techniques of Automation and Applications
关键词
氢损机理
沉积工艺
PCVD
hydrogen loss mechanism
deposition process
PCVD
