Deep shale gas exploration and development in the southern Sichuan Basin: New progress and challenges
There are abundant marine shale gas resources in the Sichuan Basin. After almost one decade of exploration and development, three national shale gas demonstration areas have been built in the Sichuan Basin and its periphery, and large-scale commercial development of middle and deep (above 3500 m in...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2023-02-01
|
| Series: | Natural Gas Industry B |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352854023000074 |
| _version_ | 1827263915825823744 |
|---|---|
| author | Xiao He Gengsheng Chen Jianfa Wu Yong Liu Shuai Wu Jian Zhang Xiaotao Zhang |
| author_facet | Xiao He Gengsheng Chen Jianfa Wu Yong Liu Shuai Wu Jian Zhang Xiaotao Zhang |
| author_sort | Xiao He |
| collection | DOAJ |
| description | There are abundant marine shale gas resources in the Sichuan Basin. After almost one decade of exploration and development, three national shale gas demonstration areas have been built in the Sichuan Basin and its periphery, and large-scale commercial development of middle and deep (above 3500 m in depth) shale gas has been successfully achieved. The volume of deep shale gas resources (3500–4500 m deep) of the upper Ordovician Wufeng Formation-lower Silurian Longmaxi Formation in the southern Sichuan Basin is 6.6 × 1012 m3, with huge exploration and exploitation potential, so it is an important area for large-scale shale gas production increase in China during the 14th Five-year Plan. Deep shale gas in the southern Sichuan Basin is influenced by complex geological engineering conditions, such as great burial depth, high temperature and pressure, and large stress and stress difference, and its high-quality development faces many challenges. After systematically summarizing the new progresses and achievements in deep shale gas exploration and development in the southern Sichuan Basin, this paper analyzes the difficulties and challenges in deep shale gas exploration and development and puts forward the next research directions. And the following research results are obtained. First, based on early practical exploration and independent innovation, key shale gas exploration and development technologies with good area selection, good well deployment, good well drilling, good well fracturing and good well management as the core are formed, and the cultivation mode of high production well is established, which supports the large-scale benefit development of deep shale gas in the southern Sichuan Basin. Second, systematical analysis indicates that the exploration and development of deep shale gas still faces a series of challenges in such three major fields as basic theory, key technology and management mode. Third, in the face of challenges, it is necessary to deepen basic theory research related to exploration and development, continuously improve key main technologies and constantly innovate mechanisms, systems and management modes. In conclusion, after years of continuous researches and pilot tests, a series of main exploration and development technologies suitable for the working conditions of deep shale gas in the southern Sichuan Basin have been basically formed, the first deep shale gas reserves of trillion cubic meters has been submitted, and the first deep shale gas production increase block of ten billion cubic meters has been selected. Thus, great progresses have been made in the exploration and development of deep shale gas, which confirms the confidence and determination in exploring and developing deep shale gas and is of great guiding significance to the rapid development of shale gas industry in China. |
| first_indexed | 2024-03-07T16:32:02Z |
| format | Article |
| id | doaj.art-e5c537cf8736467f87470d8777fb2558 |
| institution | Directory Open Access Journal |
| issn | 2352-8540 |
| language | English |
| last_indexed | 2025-03-22T03:37:45Z |
| publishDate | 2023-02-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Natural Gas Industry B |
| spelling | doaj.art-e5c537cf8736467f87470d8777fb25582024-04-28T12:09:28ZengKeAi Communications Co., Ltd.Natural Gas Industry B2352-85402023-02-011013243Deep shale gas exploration and development in the southern Sichuan Basin: New progress and challengesXiao He0Gengsheng Chen1Jianfa Wu2Yong Liu3Shuai Wu4Jian Zhang5Xiaotao Zhang6PetroChina Southwest Oil & Gasfield Company, Chengdu, Sichuan 610051, ChinaPetroChina Southwest Oil & Gasfield Company, Chengdu, Sichuan 610051, ChinaShale Gas Research Institute, PetroChina Southwest Oil & Gasfield Company, Chengdu, Sichuan 610051, ChinaPetroChina Southwest Oil & Gasfield Company, Chengdu, Sichuan 610051, ChinaShale Gas Research Institute, PetroChina Southwest Oil & Gasfield Company, Chengdu, Sichuan 610051, China; Corresponding author.Shale Gas Research Institute, PetroChina Southwest Oil & Gasfield Company, Chengdu, Sichuan 610051, ChinaSichuan Shale Gas Exploration and Development Co., Ltd., Chengdu, Sichuan 610000, ChinaThere are abundant marine shale gas resources in the Sichuan Basin. After almost one decade of exploration and development, three national shale gas demonstration areas have been built in the Sichuan Basin and its periphery, and large-scale commercial development of middle and deep (above 3500 m in depth) shale gas has been successfully achieved. The volume of deep shale gas resources (3500–4500 m deep) of the upper Ordovician Wufeng Formation-lower Silurian Longmaxi Formation in the southern Sichuan Basin is 6.6 × 1012 m3, with huge exploration and exploitation potential, so it is an important area for large-scale shale gas production increase in China during the 14th Five-year Plan. Deep shale gas in the southern Sichuan Basin is influenced by complex geological engineering conditions, such as great burial depth, high temperature and pressure, and large stress and stress difference, and its high-quality development faces many challenges. After systematically summarizing the new progresses and achievements in deep shale gas exploration and development in the southern Sichuan Basin, this paper analyzes the difficulties and challenges in deep shale gas exploration and development and puts forward the next research directions. And the following research results are obtained. First, based on early practical exploration and independent innovation, key shale gas exploration and development technologies with good area selection, good well deployment, good well drilling, good well fracturing and good well management as the core are formed, and the cultivation mode of high production well is established, which supports the large-scale benefit development of deep shale gas in the southern Sichuan Basin. Second, systematical analysis indicates that the exploration and development of deep shale gas still faces a series of challenges in such three major fields as basic theory, key technology and management mode. Third, in the face of challenges, it is necessary to deepen basic theory research related to exploration and development, continuously improve key main technologies and constantly innovate mechanisms, systems and management modes. In conclusion, after years of continuous researches and pilot tests, a series of main exploration and development technologies suitable for the working conditions of deep shale gas in the southern Sichuan Basin have been basically formed, the first deep shale gas reserves of trillion cubic meters has been submitted, and the first deep shale gas production increase block of ten billion cubic meters has been selected. Thus, great progresses have been made in the exploration and development of deep shale gas, which confirms the confidence and determination in exploring and developing deep shale gas and is of great guiding significance to the rapid development of shale gas industry in China.http://www.sciencedirect.com/science/article/pii/S2352854023000074Southern Sichuan BasinDeep shale gasWufeng–LongmaxiExploration and development progressGeology–engineering integrationChallenge |
| spellingShingle | Xiao He Gengsheng Chen Jianfa Wu Yong Liu Shuai Wu Jian Zhang Xiaotao Zhang Deep shale gas exploration and development in the southern Sichuan Basin: New progress and challenges Natural Gas Industry B Southern Sichuan Basin Deep shale gas Wufeng–Longmaxi Exploration and development progress Geology–engineering integration Challenge |
| title | Deep shale gas exploration and development in the southern Sichuan Basin: New progress and challenges |
| title_full | Deep shale gas exploration and development in the southern Sichuan Basin: New progress and challenges |
| title_fullStr | Deep shale gas exploration and development in the southern Sichuan Basin: New progress and challenges |
| title_full_unstemmed | Deep shale gas exploration and development in the southern Sichuan Basin: New progress and challenges |
| title_short | Deep shale gas exploration and development in the southern Sichuan Basin: New progress and challenges |
| title_sort | deep shale gas exploration and development in the southern sichuan basin new progress and challenges |
| topic | Southern Sichuan Basin Deep shale gas Wufeng–Longmaxi Exploration and development progress Geology–engineering integration Challenge |
| url | http://www.sciencedirect.com/science/article/pii/S2352854023000074 |
| work_keys_str_mv | AT xiaohe deepshalegasexplorationanddevelopmentinthesouthernsichuanbasinnewprogressandchallenges AT gengshengchen deepshalegasexplorationanddevelopmentinthesouthernsichuanbasinnewprogressandchallenges AT jianfawu deepshalegasexplorationanddevelopmentinthesouthernsichuanbasinnewprogressandchallenges AT yongliu deepshalegasexplorationanddevelopmentinthesouthernsichuanbasinnewprogressandchallenges AT shuaiwu deepshalegasexplorationanddevelopmentinthesouthernsichuanbasinnewprogressandchallenges AT jianzhang deepshalegasexplorationanddevelopmentinthesouthernsichuanbasinnewprogressandchallenges AT xiaotaozhang deepshalegasexplorationanddevelopmentinthesouthernsichuanbasinnewprogressandchallenges |