天然气工业2023，Vol.43Issue(12)：63-70,8.DOI:10.3787/j.issn.1000-0976.2023.12.007
泡沫含量监测系统在页岩气泡排井的实践
Application of foam content monitoring system in foam drainage shale gas wells
摘要
Abstract
In the late stages of shale gas exploitation,bottom hole liquid loading is common,so drainage gas recovery technology is needed to maintain the stable production of gas wells.Foam drainage gas recovery is widely used as a low-cost,high-efficiency and easy-to-operate drainage gas recovery process.At present,however,the foam content in the shale gas well with foam drainage gas recovery process is mainly determined through regular sampling by on-site personnel,and it is taken as the basis for adjusting the defoaming system.In order to realize unmanned,automatic and digital foam content monitoring in the process of foam drainage for shale gas recovery,this paper develops a foam content monitoring system and then carries out field tests.And the following research results are obtained.First,the foam content monitoring system is reliable in mechanical device sealing,compression and signal transmission,and can meet the requirements of field conditions.Second,the relationship model between the voltage and the foam content obtained through the field test is consistent with the indoor experiment,and both of them are logarithmic.Third,the maximum absolute error between the foam content of manual sampling and the foam content of system monitoring is 13.44％,and the minimum absolute error is 1.13％.Fourth,when the foam content in the pipeline is less than 50.00％,the foam content monitoring system is more suitable in the field.When the foam content is less than 25.00％,the system has higher detection accuracy.In conclusion,the development and test of the foam content monitoring system verifies the feasibility of foam content monitoring based on infrared ray and establishes the mapping model between foam content and voltage value suitable for field conditions,which is of practical significance for realizing the automation,networking and cloud based development of foam content monitoring in shale gas wells with a foam drainage gas recovery process.关键词
页岩气/泡沫排水采气/泡沫含量/监测系统/红外线/现场试验Key words
Shale gas/Foam drainage gas recovery/Foam content/Monitoring system/Infrared ray/Field test引用本文复制引用
郭亮,王瑞宇,陈昶旭,魏锋儒,薛伟宾,昝青海,郑瑞..泡沫含量监测系统在页岩气泡排井的实践[J].天然气工业,2023,43(12):63-70,8.基金项目
中国石油浙江油田分公司自主课题"泡排井口泡沫含量检测服务"(编号:2021-489). （编号:2021-489）
