石油科学通报2026，Vol.11Issue(4)：1217-1232,16.DOI:10.3969/j.issn.2096-1693.2026.02.044
某储气库高采出量工况下乙二醇损耗机理分析及采气工艺优化研究
Glycol loss mechanisms and process optimization for gas storage under high production rates
周芷名 1温凯 1陈倩岚 2李炜 3赵昕铭 2卢超 3刘羿鸣 1常海滨 4伍泓毓 5宫敬1
作者信息
- 1. 中国石油大学(北京)石油工程学院,北京 102249
- 2. 中国石油天然气股份有限公司大港油田分公司,天津 300280
- 3. 大港油田集团有限责任公司天津储气库分公司,天津 300280
- 4. 中国矿业大学(北京)能源与矿业学院,北京 100083
- 5. 中国石油大学(北京)新能源科学与工程学院,北京 102249
- 折叠
摘要
Abstract
To address the significant increase in monoethylene glycol(MEG)loss and abnormal operation of the regeneration system during high-load gas production from an underground gas storage facility,this study investigates the main loss mechanisms and develops an integrated process optimization strategy based on field data,compositional analysis,and Aspen HYSYS simula-tions.A steady-state model of the surface gas-production process was established and validated using representative operating data,and HYSYS Dynamics was further used to evaluate transient MEG entrainment during load variations.The model reproduced the pressure and temperature responses of the actual process with acceptable accuracy,providing a basis for subsequent mechanism analysis and optimization.The results show that increasing the gas production rate from 400×104 m³/d to 560×104 m³/d deteriorates the separation performance of the low-temperature separator because of higher gas velocity and shorter liquid residence time.Under steady-state conditions,the gas-phase MEG entrainment rate increases from 12.48 kg/h to 17.47 kg/h,while during the transient ramp-up process it reaches a peak of 26.80 kg/h,53.4％higher than the final high-load steady-state value.Meanwhile,enhanced interfacial disturbance and reduced residence time promote oil-glycol emulsification and liquid-phase entrainment,causing part of the glycol-rich liquid and condensate to enter the regeneration system.Compositional analysis indicates that the condensate contains relatively high fractions of heavy hydrocarbons and aromatics,which can aggravate fouling,carbon deposition,foaming,and vapor-liquid entrainment in the regeneration section.Based on these findings,a coordinated optimization strategy is proposed by controlling the air-cooler outlet temperature,adjusting the export pressure-regulating valve,and utilizing the available pipeline pressure potential to enhance Joule-Thomson cooling.When the low-temperature separator temperature is reduced from-5 ℃ to-10 ℃,the recovered MEG flow rate increases from 34.66 kg/h to 35.17 kg/h.The predicted hydrate formation temperature under the current MEG injection condition is approximately-13.32 ℃,leaving a safety margin of about 3.3 ℃ at-10 ℃.Further optimization of the regeneration system,including hydrocarbon removal and operating-parameter adjustment,can reduce the adverse effects of heavy components and impurities.Economic evaluation shows that,although the reboiler duty increases from 215 kW to 248 kW,the optimized scheme can still provide a net benefit of approximately 446-626 CNY/d.The results demonstrate that abnormal MEG loss under high production rates is caused by the combined effects of deteriorated front-end separation,transient load disturbances,and regeneration-system contamination.The proposed coordinated optimization strategy can effectively reduce MEG loss while satisfying hydrate-prevention and downstream pressure constraints,thereby providing technical support for the safe,stable,and economical operation of underground gas storage facilities under high-load production conditions.关键词
地下储气库/地面工艺/乙二醇损耗/工艺优化/HYSYSKey words
underground gas storage/surface process/glycol loss/process optimization/HYSYS分类
能源科技引用本文复制引用
周芷名,温凯,陈倩岚,李炜,赵昕铭,卢超,刘羿鸣,常海滨,伍泓毓,宫敬..某储气库高采出量工况下乙二醇损耗机理分析及采气工艺优化研究[J].石油科学通报,2026,11(4):1217-1232,16.
