Geochemical Characteristics and Productivity Response of Produced Water from Coalbed Methane Wells in the Yuwang Block, Eastern Yunnan, China
Coalbed methane (CBM) well-produced water contains abundant geochemical information that can guide productivity predictions of CBM wells. The geochemical characteristics and productivity responses of water produced from six CBM wells in the Yuwang block, eastern Yunnan, were analyzed using data of c...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2020/5702031 |
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| author | Mingyang Du Xiaojuan Yao Shasha Zhang He Zhou Caifang Wu Junlong Zhao |
| author_facet | Mingyang Du Xiaojuan Yao Shasha Zhang He Zhou Caifang Wu Junlong Zhao |
| author_sort | Mingyang Du |
| collection | DOAJ |
| description | Coalbed methane (CBM) well-produced water contains abundant geochemical information that can guide productivity predictions of CBM wells. The geochemical characteristics and productivity responses of water produced from six CBM wells in the Yuwang block, eastern Yunnan, were analyzed using data of conventional ions, hydrogen and oxygen isotopes, and dissolved inorganic carbon (DIC). The results showed that the produced water type of well L-3 is mainly Na-HCO3, while those from the other five wells are Na-Cl-HCO3. The isotope characteristics of produced water are affected greatly by water-rock interaction. Combined with the enrichment mechanisms of isotopes D and 18O, we found that the water samples exhibit an obvious D drift trend relative to the local meteoric water line. The 13C enrichment of DIC in the water samples suggests that DIC is mainly produced by the dissolution of carbonate minerals in coal seams. The concentration of HCO3-, D drift trend, and enrichment of 13CDIC in produced water are positively correlated with CBM production, which can be verified by wells L-4 and L-6. |
| format | Article |
| id | doaj-art-7f1c45c4d46649c4b0ccf1653443c503 |
| institution | Kabale University |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-7f1c45c4d46649c4b0ccf1653443c5032025-02-03T01:04:39ZengWileyGeofluids1468-81151468-81232020-01-01202010.1155/2020/57020315702031Geochemical Characteristics and Productivity Response of Produced Water from Coalbed Methane Wells in the Yuwang Block, Eastern Yunnan, ChinaMingyang Du0Xiaojuan Yao1Shasha Zhang2He Zhou3Caifang Wu4Junlong Zhao5Key Laboratory of Coalbed Methane Resource and Reservoir Formation Process, Ministry of Education, Xuzhou, Jiangsu 221006, ChinaKey Laboratory of Coalbed Methane Resource and Reservoir Formation Process, Ministry of Education, Xuzhou, Jiangsu 221006, ChinaKey Laboratory of Coalbed Methane Resource and Reservoir Formation Process, Ministry of Education, Xuzhou, Jiangsu 221006, ChinaKey Laboratory of Coalbed Methane Resource and Reservoir Formation Process, Ministry of Education, Xuzhou, Jiangsu 221006, ChinaKey Laboratory of Coalbed Methane Resource and Reservoir Formation Process, Ministry of Education, Xuzhou, Jiangsu 221006, ChinaKey Laboratory of Coalbed Methane Resource and Reservoir Formation Process, Ministry of Education, Xuzhou, Jiangsu 221006, ChinaCoalbed methane (CBM) well-produced water contains abundant geochemical information that can guide productivity predictions of CBM wells. The geochemical characteristics and productivity responses of water produced from six CBM wells in the Yuwang block, eastern Yunnan, were analyzed using data of conventional ions, hydrogen and oxygen isotopes, and dissolved inorganic carbon (DIC). The results showed that the produced water type of well L-3 is mainly Na-HCO3, while those from the other five wells are Na-Cl-HCO3. The isotope characteristics of produced water are affected greatly by water-rock interaction. Combined with the enrichment mechanisms of isotopes D and 18O, we found that the water samples exhibit an obvious D drift trend relative to the local meteoric water line. The 13C enrichment of DIC in the water samples suggests that DIC is mainly produced by the dissolution of carbonate minerals in coal seams. The concentration of HCO3-, D drift trend, and enrichment of 13CDIC in produced water are positively correlated with CBM production, which can be verified by wells L-4 and L-6.http://dx.doi.org/10.1155/2020/5702031 |
| spellingShingle | Mingyang Du Xiaojuan Yao Shasha Zhang He Zhou Caifang Wu Junlong Zhao Geochemical Characteristics and Productivity Response of Produced Water from Coalbed Methane Wells in the Yuwang Block, Eastern Yunnan, China Geofluids |
| title | Geochemical Characteristics and Productivity Response of Produced Water from Coalbed Methane Wells in the Yuwang Block, Eastern Yunnan, China |
| title_full | Geochemical Characteristics and Productivity Response of Produced Water from Coalbed Methane Wells in the Yuwang Block, Eastern Yunnan, China |
| title_fullStr | Geochemical Characteristics and Productivity Response of Produced Water from Coalbed Methane Wells in the Yuwang Block, Eastern Yunnan, China |
| title_full_unstemmed | Geochemical Characteristics and Productivity Response of Produced Water from Coalbed Methane Wells in the Yuwang Block, Eastern Yunnan, China |
| title_short | Geochemical Characteristics and Productivity Response of Produced Water from Coalbed Methane Wells in the Yuwang Block, Eastern Yunnan, China |
| title_sort | geochemical characteristics and productivity response of produced water from coalbed methane wells in the yuwang block eastern yunnan china |
| url | http://dx.doi.org/10.1155/2020/5702031 |
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