Fine characterization technique of concealed channel and its application in the Jurassic Formation of western Sichuan Depression
The sandstone reservoirs in the Jurassic formation of gas fields such as ZJ, XC, and SF in western Sichuan Depression are characterized by their tight nature and are primarily situated within delta plain-frontal distributary channels. These reservoirs often pose a unique challenge in terms of geophy...
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| Language: | zho |
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Editorial Department of Petroleum Reservoir Evaluation and Development
2023-10-01
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| Series: | Youqicang pingjia yu kaifa |
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| Online Access: | https://red.magtech.org.cn/fileup/2095-1426/PDF/1698828929310-176952914.pdf |
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| _version_ | 1849696966583255040 |
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| author | LI Mengqiao, YE Tairan, DING Weinan, LIU Xingyan |
| author_facet | LI Mengqiao, YE Tairan, DING Weinan, LIU Xingyan |
| author_sort | LI Mengqiao, YE Tairan, DING Weinan, LIU Xingyan |
| collection | DOAJ |
| description | The sandstone reservoirs in the Jurassic formation of gas fields such as ZJ, XC, and SF in western Sichuan Depression are characterized by their tight nature and are primarily situated within delta plain-frontal distributary channels. These reservoirs often pose a unique challenge in terms of geophysical analysis due to the significant impedance contrast between the type ③ reservoir and the surrounding rock formations. Therefore, the precise characterization of concealed channel distribution is a crucial focus for expanding exploration and development efforts. In this study, the rock physics characteristics of reservoirs and forward modeling of AVO（Amplitude Versus Offset） gathers were conducted to determine the relationship between different reservoir types and AVO responses. Furthermore, a method known as the FN stacking method was developed. By optimizing the processing of gathers and selecting far/near offset stacking, the identification capability of concealed channels was significantly enhanced. This technology accurately reveals the distribution of hidden channels, precisely traces their shape and boundaries, and has successfully discovered new channels that have been confirmed through actual drilling, thus expanding new exploration and development fronts. |
| format | Article |
| id | doaj-art-c2b367b8395a4c3c9aff922597301a3f |
| institution | DOAJ |
| issn | 2095-1426 |
| language | zho |
| publishDate | 2023-10-01 |
| publisher | Editorial Department of Petroleum Reservoir Evaluation and Development |
| record_format | Article |
| series | Youqicang pingjia yu kaifa |
| spelling | doaj-art-c2b367b8395a4c3c9aff922597301a3f2025-08-20T03:19:19ZzhoEditorial Department of Petroleum Reservoir Evaluation and DevelopmentYouqicang pingjia yu kaifa2095-14262023-10-0113559159910.13809/j.cnki.cn32-1825/te.2023.05.006Fine characterization technique of concealed channel and its application in the Jurassic Formation of western Sichuan DepressionLI Mengqiao, YE Tairan, DING Weinan, LIU Xingyan01. Research Institute of Exploration and Development, Sinopec Southwest China Oil & Gas Company, Chengdu, Sichuan 610041, China;2. Development Management Department, Sinopec Southwest China Oil & Gas Company, Chengdu, Sichuan 610041, ChinaThe sandstone reservoirs in the Jurassic formation of gas fields such as ZJ, XC, and SF in western Sichuan Depression are characterized by their tight nature and are primarily situated within delta plain-frontal distributary channels. These reservoirs often pose a unique challenge in terms of geophysical analysis due to the significant impedance contrast between the type ③ reservoir and the surrounding rock formations. Therefore, the precise characterization of concealed channel distribution is a crucial focus for expanding exploration and development efforts. In this study, the rock physics characteristics of reservoirs and forward modeling of AVO（Amplitude Versus Offset） gathers were conducted to determine the relationship between different reservoir types and AVO responses. Furthermore, a method known as the FN stacking method was developed. By optimizing the processing of gathers and selecting far/near offset stacking, the identification capability of concealed channels was significantly enhanced. This technology accurately reveals the distribution of hidden channels, precisely traces their shape and boundaries, and has successfully discovered new channels that have been confirmed through actual drilling, thus expanding new exploration and development fronts.https://red.magtech.org.cn/fileup/2095-1426/PDF/1698828929310-176952914.pdf|concealed channel|avo forward modeling|fn stacking method|volume frequency pixel imaging|western sichuan depression |
| spellingShingle | LI Mengqiao, YE Tairan, DING Weinan, LIU Xingyan Fine characterization technique of concealed channel and its application in the Jurassic Formation of western Sichuan Depression Youqicang pingjia yu kaifa |concealed channel|avo forward modeling|fn stacking method|volume frequency pixel imaging|western sichuan depression |
| title | Fine characterization technique of concealed channel and its application in the Jurassic Formation of western Sichuan Depression |
| title_full | Fine characterization technique of concealed channel and its application in the Jurassic Formation of western Sichuan Depression |
| title_fullStr | Fine characterization technique of concealed channel and its application in the Jurassic Formation of western Sichuan Depression |
| title_full_unstemmed | Fine characterization technique of concealed channel and its application in the Jurassic Formation of western Sichuan Depression |
| title_short | Fine characterization technique of concealed channel and its application in the Jurassic Formation of western Sichuan Depression |
| title_sort | fine characterization technique of concealed channel and its application in the jurassic formation of western sichuan depression |
| topic | |concealed channel|avo forward modeling|fn stacking method|volume frequency pixel imaging|western sichuan depression |
| url | https://red.magtech.org.cn/fileup/2095-1426/PDF/1698828929310-176952914.pdf |
| work_keys_str_mv | AT limengqiaoyetairandingweinanliuxingyan finecharacterizationtechniqueofconcealedchannelanditsapplicationinthejurassicformationofwesternsichuandepression |