天然气水合物开采井CH_(4)-CO_(2)光纤气体传感监测仪器研发  

DEVELOPMENT OF CH_(4)-CO_(2) OPTICAL FIBER GAS SENSOR MONITORING INSTRUMENT FOR NATURAL GAS HYDRATE PRODUCTION WELL

作　　者：陈强 刘琨[3] 梁宇 孙建业 李彦龙[1,2] 吴能友 刘昌岭[1,2] CHEN Qiang;LIU Kun;LIANG Yu;SUN Jianye;LI Yanlong;WU Nengyou;LIU Changling(Key Laboratory of Gas Hydrate,Ministry of Natural Resources,Qingdao Institute of Marine Geology,CGS,Qingdao 266237,China;Laboratory for Marine Mineral Resources,Pilot National Laboratory for Marine Science and Technology(Qingdao),Qingdao 266237,China;Key Laboratory of Optoelectronic Information Technology,Ministry of Education,Tianjin University,Tianjin 300072,China)

机构地区：[1]自然资源部天然气水合物重点实验室,中国地质调查局青岛海洋地质研究所,青岛266237 [2]青岛海洋科学与技术国家试点实验室海洋矿产资源与探测技术功能实验室,青岛266237 [3]天津大学精密仪器与光电子工程学院,光电信息技术教育部重点实验室,天津300072

出　　处：《海洋地质前沿》2021年第10期78-84,共7页Marine Geology Frontiers

基　　金：国家重点研发计划项目(2017YFC0307600);海洋地质调查二级项目(DD20190231);泰山学者特聘专家项目(ts201712079)。

摘　　要：天然气水合物资源开发备受关注,日本、中国等国家相继实施海域天然气水合物试采,证实了其资源潜力和开发可行性。目前对水合物开采过程中生产井内气体成分的监测手段尚不完善,制约了对生产过程监控及安全风险预估等工作的开展。本研究基于可调谐半导体激光吸收光谱(TDLAS)原理,设计出一套CH_(4)、CO_(2)气体成分传感监测系统,并针对天然气水合物生产井工况进行小型化、抗干扰改良,最终形成设备样机。经测试验证,研制的光纤气体传感监测仪器具备对浓度>50×10^(-6)的CH_(4)、浓度>100×10^(-6)的CO_(2)稳定的测量能力。The development of natural gas hydrate has attracted great attention from all over the world.Japan,China and some other countries have successfully implemented the trial production at sea,which further confirmed the resource potential and development feasibility of gas hydrate.However,the monitoring methods for gas composition in production well are far from perfect up to date,which restricts the production process evaluation and risk prediction.Based on the principles of TDLAS,a set of gas composition sensing and monitoring system for methane and carbon dioxide is designed,and the miniaturization and anti-interference improvement are realized according to the gas hydrate production well conditions.It is verified that the developed optical fiber gas composition monitoring instrument is effective and stable for measurement of CH_(4) with concentration above 50×10^(−6) and CO_(2) with concentration above 100×10^(−6).

关 键 词：天然气水合物 光纤气体传感器 可调谐半导体激光吸收光谱 甲烷 二氧化碳 

分 类 号：P744.4[天文地球—海洋科学] P618.13