At present,the monitoring method of gas injection volume in gas storage is measured by ultrasonic flowmeter.There is a big deviation between the measurement quantity of gas injection main station and the sum of gas injection quantity of many wells,which affects the gas recovery optimization management for each well during gas load shifting period.In order to monitor the gas injection volume of each well more accurately,based on the monitoring data of the distributed temperature sensing(DTS)of the injection and production wells in the gas storage area,select preferentially stable injection gas data as samples,the relationship model between the total daily gas injection volume and the total daily temperature at specific depth is established by using the linear fitting method of temperature and gas injection volume,and the model coefficient of a single well is determined.Then,the calculation model of daily temperature and daily gas injection volume at specific depth of single well non-production zone is established.The application of this method in Sudong XX gas storage area,Changqing oilfield shows that the sum of daily gas injection volume of 8 optical fiber monitoring wells is basically the same as that of the gas injection volume main station.The optical fiber temperature can be used to obtain more accurate gas injection volume monitoring data of each well,breaking the tradition of relying on the temperature change of production zone to evaluate gas injection volume,and achieving good application results.
关键词
储气库/注气量/光纤监测/分布式光纤测温系统
Key words
gas storage/gas injection volume/optical fiber monitoring/distributed temperature sensing
维普
万方数据