Technical progress of construction and safe operation of underground gas storage under complex geological conditions
Due to the high dependency of China on imported natural gas, continuously enhancing the gas storage capacity in peak shaving and stable supply is an inevitable choice to assure natural gas security in China. In view of the characteristics of the developed gas reservoir fault system, largely buried d...
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| Format: | Article |
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Editorial Office of Oil & Gas Storage and Transportation
2023-10-01
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| Series: | You-qi chuyun |
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| Online Access: | https://yqcy.pipechina.com.cn/cn/article/doi/10.6047/j.issn.1000-8241.2023.10.002 |
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| author | Qiqi WANYAN Yun WANG Dongxu LI Hongcheng XU Chun LI Kang LI Jingcui LI Lifeng LI |
| author_facet | Qiqi WANYAN Yun WANG Dongxu LI Hongcheng XU Chun LI Kang LI Jingcui LI Lifeng LI |
| author_sort | Qiqi WANYAN |
| collection | DOAJ |
| description | Due to the high dependency of China on imported natural gas, continuously enhancing the gas storage capacity in peak shaving and stable supply is an inevitable choice to assure natural gas security in China. In view of the characteristics of the developed gas reservoir fault system, largely buried depth, strong heterogeneity and complex gas-water distribution, breakthroughs were made in the construction and operation of gas reservoir and salt cavern type gas storages in China through over 20 years of hard working in research, and five technology series were formed, including (1) storage site selection and evaluation technology, (2) storage capacity design and evaluation technology, (3) efficient wellbore quality control technology, (4) large displacement injection-production design technology, and (5) risk identification and monitoring technology. As a result, the gas storage capacity has leapt from 40×108 m3 to 192×108 m3. Predictably, the site resource of gas storage in China will have more deteriorated quality and more complicated types in the future, which will gradually change to the new types of oil reservoirs, low-permeability gas reservoirs, complex connected old salt caverns and water layers. Thus, four challenges will be posed to the efficient construction and operation of gas storage, such as (1) the urgent need to perfect the theory and technology for dynamic sealing evaluation of gas storage geological bodies, (2) the capacity design technology for new gas storage types still in the initial stage, (3) inadequate utilization of gas well productivity and great demands for innovative supporting technologies, and (4) inadequate risk warning and safety control capabilities to meet the requirements of the safe operation of gas storage. It is suggested to carry out special research to perfect the dynamic mechanism of fault sealing weakening of geological bodies. Further, efforts should be made to form an optimal design method of intensive injection and production, and to develop a domestic microseismic monitoring system. Moreover, new functional fields of gas storage should be continuously expanded, so as to achieve high quality and sustainable development of gas storage. |
| format | Article |
| id | doaj-art-29f04be21bfe4dd6a7d26dbb4673d619 |
| institution | Kabale University |
| issn | 1000-8241 |
| language | zho |
| publishDate | 2023-10-01 |
| publisher | Editorial Office of Oil & Gas Storage and Transportation |
| record_format | Article |
| series | You-qi chuyun |
| spelling | doaj-art-29f04be21bfe4dd6a7d26dbb4673d6192025-01-17T06:49:19ZzhoEditorial Office of Oil & Gas Storage and TransportationYou-qi chuyun1000-82412023-10-0142101092109910.6047/j.issn.1000-8241.2023.10.002yqcy-42-10-1092Technical progress of construction and safe operation of underground gas storage under complex geological conditionsQiqi WANYAN0Yun WANG1Dongxu LI2Hongcheng XU3Chun LI4Kang LI5Jingcui LI6Lifeng LI7Research Institute of Petroleum Exploration and Development (RIPED)//CNPC Key Laboratory of Oil & Gas Underground StorageResearch Institute of Petroleum Exploration and Development (RIPED)//CNPC Key Laboratory of Oil & Gas Underground StorageResearch Institute of Petroleum Exploration and Development (RIPED)//CNPC Key Laboratory of Oil & Gas Underground StorageResearch Institute of Petroleum Exploration and Development (RIPED)//CNPC Key Laboratory of Oil & Gas Underground StorageResearch Institute of Petroleum Exploration and Development (RIPED)//CNPC Key Laboratory of Oil & Gas Underground StorageResearch Institute of Petroleum Exploration and Development (RIPED)//CNPC Key Laboratory of Oil & Gas Underground StorageCNPC Engineering Technology R&D Company LimitedCNPC Engineering Materials Research Institute Co. Ltd.Due to the high dependency of China on imported natural gas, continuously enhancing the gas storage capacity in peak shaving and stable supply is an inevitable choice to assure natural gas security in China. In view of the characteristics of the developed gas reservoir fault system, largely buried depth, strong heterogeneity and complex gas-water distribution, breakthroughs were made in the construction and operation of gas reservoir and salt cavern type gas storages in China through over 20 years of hard working in research, and five technology series were formed, including (1) storage site selection and evaluation technology, (2) storage capacity design and evaluation technology, (3) efficient wellbore quality control technology, (4) large displacement injection-production design technology, and (5) risk identification and monitoring technology. As a result, the gas storage capacity has leapt from 40×108 m3 to 192×108 m3. Predictably, the site resource of gas storage in China will have more deteriorated quality and more complicated types in the future, which will gradually change to the new types of oil reservoirs, low-permeability gas reservoirs, complex connected old salt caverns and water layers. Thus, four challenges will be posed to the efficient construction and operation of gas storage, such as (1) the urgent need to perfect the theory and technology for dynamic sealing evaluation of gas storage geological bodies, (2) the capacity design technology for new gas storage types still in the initial stage, (3) inadequate utilization of gas well productivity and great demands for innovative supporting technologies, and (4) inadequate risk warning and safety control capabilities to meet the requirements of the safe operation of gas storage. It is suggested to carry out special research to perfect the dynamic mechanism of fault sealing weakening of geological bodies. Further, efforts should be made to form an optimal design method of intensive injection and production, and to develop a domestic microseismic monitoring system. Moreover, new functional fields of gas storage should be continuously expanded, so as to achieve high quality and sustainable development of gas storage.https://yqcy.pipechina.com.cn/cn/article/doi/10.6047/j.issn.1000-8241.2023.10.002underground gas storagesite selectionstorage capacity evaluationinjection-productionprogress |
| spellingShingle | Qiqi WANYAN Yun WANG Dongxu LI Hongcheng XU Chun LI Kang LI Jingcui LI Lifeng LI Technical progress of construction and safe operation of underground gas storage under complex geological conditions You-qi chuyun underground gas storage site selection storage capacity evaluation injection-production progress |
| title | Technical progress of construction and safe operation of underground gas storage under complex geological conditions |
| title_full | Technical progress of construction and safe operation of underground gas storage under complex geological conditions |
| title_fullStr | Technical progress of construction and safe operation of underground gas storage under complex geological conditions |
| title_full_unstemmed | Technical progress of construction and safe operation of underground gas storage under complex geological conditions |
| title_short | Technical progress of construction and safe operation of underground gas storage under complex geological conditions |
| title_sort | technical progress of construction and safe operation of underground gas storage under complex geological conditions |
| topic | underground gas storage site selection storage capacity evaluation injection-production progress |
| url | https://yqcy.pipechina.com.cn/cn/article/doi/10.6047/j.issn.1000-8241.2023.10.002 |
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