Controlling factors of underpressure reservoirs in the Sulige gas field, Ordos Basin
Based on the study of low-pressure distribution characteristics, the main factors that control the formation of low-pressure reservoirs in the Sulige gas field are analyzed from several aspects, such as structural evolution, sedimentary characteristics and formation fluid features. It is suggested t...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2012-02-01
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| Series: | Petroleum Exploration and Development |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1876380412600160 |
| _version_ | 1818451407734308864 |
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| author | Hao XU Junfeng ZHANG Dazhen TANG Ming LI Wenzhong ZHANG Wenji LIN |
| author_facet | Hao XU Junfeng ZHANG Dazhen TANG Ming LI Wenzhong ZHANG Wenji LIN |
| author_sort | Hao XU |
| collection | DOAJ |
| description | Based on the study of low-pressure distribution characteristics, the main factors that control the formation of low-pressure reservoirs in the Sulige gas field are analyzed from several aspects, such as structural evolution, sedimentary characteristics and formation fluid features. It is suggested that the gas pool pressure is low and affected greatly by buried depth. Its roof and floor developed several layers of uncompacted mudstone, indicative of good property and pressure sealing conditions. The formation water also indicates favorable preservation conditions. The reservoir pressure of the Sulige gas field experienced 4 major evolutionary stages: the normal pressure stage of the Late Triassic-early Jurassic, the pressure rising stage of the Middle Jurassic-Late Jurassic, the sustainable pressure increasing stage of the Early Cretaceous, and the pressure decreasing stage of the late Early Cretaceous. The pore rebound and temperature decrease caused by intense tectonic uplift after the late period of Early Cretaceous, caused the reservoir pressure of the Sulige gas field to reduce by 0.673 MPa and 23.08% of the original strata pressure, respectively. The low pressure of the Sulige gas field is related to sedimentary assemblage, tectonic evolution and hydrocarbon accumulation. Key words: low pressure gas pool, formation mechanism, tectonic uplift, Sulige gas field, Ordos Basin |
| first_indexed | 2024-12-14T21:06:43Z |
| format | Article |
| id | doaj.art-e59cd4655af14e71be86fb3aaf8ae121 |
| institution | Directory Open Access Journal |
| issn | 1876-3804 |
| language | English |
| last_indexed | 2024-12-14T21:06:43Z |
| publishDate | 2012-02-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Petroleum Exploration and Development |
| spelling | doaj.art-e59cd4655af14e71be86fb3aaf8ae1212022-12-21T22:47:23ZengKeAi Communications Co., Ltd.Petroleum Exploration and Development1876-38042012-02-013917074Controlling factors of underpressure reservoirs in the Sulige gas field, Ordos BasinHao XU0Junfeng ZHANG1Dazhen TANG2Ming LI3Wenzhong ZHANG4Wenji LIN5School of Energy, China University of Geosciences (Beijing), Beijing 100083, China; Key Laboratory of Marine Reservoir Evolution and Hydrocarbon Accumulation Mechanism, Ministry of Education, Beijing 100083, China; Corresponding authorPetroChina Exploration and Production Company, Beijing 100007, ChinaSchool of Energy, China University of Geosciences (Beijing), Beijing 100083, China; Key Laboratory of Marine Reservoir Evolution and Hydrocarbon Accumulation Mechanism, Ministry of Education, Beijing 100083, ChinaPetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, ChinaChina United Coalbed Methane Corporation, Ltd., Beijing 100011, ChinaSchool of Energy, China University of Geosciences (Beijing), Beijing 100083, China; Key Laboratory of Marine Reservoir Evolution and Hydrocarbon Accumulation Mechanism, Ministry of Education, Beijing 100083, ChinaBased on the study of low-pressure distribution characteristics, the main factors that control the formation of low-pressure reservoirs in the Sulige gas field are analyzed from several aspects, such as structural evolution, sedimentary characteristics and formation fluid features. It is suggested that the gas pool pressure is low and affected greatly by buried depth. Its roof and floor developed several layers of uncompacted mudstone, indicative of good property and pressure sealing conditions. The formation water also indicates favorable preservation conditions. The reservoir pressure of the Sulige gas field experienced 4 major evolutionary stages: the normal pressure stage of the Late Triassic-early Jurassic, the pressure rising stage of the Middle Jurassic-Late Jurassic, the sustainable pressure increasing stage of the Early Cretaceous, and the pressure decreasing stage of the late Early Cretaceous. The pore rebound and temperature decrease caused by intense tectonic uplift after the late period of Early Cretaceous, caused the reservoir pressure of the Sulige gas field to reduce by 0.673 MPa and 23.08% of the original strata pressure, respectively. The low pressure of the Sulige gas field is related to sedimentary assemblage, tectonic evolution and hydrocarbon accumulation. Key words: low pressure gas pool, formation mechanism, tectonic uplift, Sulige gas field, Ordos Basinhttp://www.sciencedirect.com/science/article/pii/S1876380412600160 |
| spellingShingle | Hao XU Junfeng ZHANG Dazhen TANG Ming LI Wenzhong ZHANG Wenji LIN Controlling factors of underpressure reservoirs in the Sulige gas field, Ordos Basin Petroleum Exploration and Development |
| title | Controlling factors of underpressure reservoirs in the Sulige gas field, Ordos Basin |
| title_full | Controlling factors of underpressure reservoirs in the Sulige gas field, Ordos Basin |
| title_fullStr | Controlling factors of underpressure reservoirs in the Sulige gas field, Ordos Basin |
| title_full_unstemmed | Controlling factors of underpressure reservoirs in the Sulige gas field, Ordos Basin |
| title_short | Controlling factors of underpressure reservoirs in the Sulige gas field, Ordos Basin |
| title_sort | controlling factors of underpressure reservoirs in the sulige gas field ordos basin |
| url | http://www.sciencedirect.com/science/article/pii/S1876380412600160 |
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