Seismic prediction technology for thin reservoirs of tight gas in coal measure strata: a case study of Block L in the eastern margin of the Ordos Basin
The development of high-accuracy seismic prediction technology, capable of mitigating the influence of coal events and accurately inverting key reservoir parameters, is critical for enhancing the exploration and development of tight gas reservoirs in coal-bearing strata. Block L, located on the east...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2025-01-01
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| Series: | Frontiers in Earth Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2024.1487487/full |
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| author | Yu Qi Kui Wu Qixin Li Xiaowen Zheng Bo Wang Dan Li Wei Tang |
| author_facet | Yu Qi Kui Wu Qixin Li Xiaowen Zheng Bo Wang Dan Li Wei Tang |
| author_sort | Yu Qi |
| collection | DOAJ |
| description | The development of high-accuracy seismic prediction technology, capable of mitigating the influence of coal events and accurately inverting key reservoir parameters, is critical for enhancing the exploration and development of tight gas reservoirs in coal-bearing strata. Block L, located on the eastern edge of the Ordos Basin, serves as a case study. This area, where tight sandstone gas deposits are widespread in the Upper Paleozoic, is characterized by coal seams that complicate seismic interpretation. The available drilling data show that the tight gas layers in the Taiyuan and Benxi Formations are well-developed and serve as the primary hydrocarbon source rocks. However, the low-density, low-velocity coal seams create strong wave impedance contrasts, which significantly affect the neighboring tight sandstone gas layers and present substantial challenges for seismic prediction. To address this issue, we employ wavelet decomposition and reconstruction techniques to eliminate coal seam interference and high-resolution waveform simulation technology for seismic prediction of thin reservoirs. This approach circumvents the limitations of using a single impedance parameter to differentiate between sand–mudstone and limestone–coal interfaces. Step-by-step inversion and gradual stripping techniques are applied to remove the influences of coal seam and limestone, thereby facilitating accurate identification of sandstone distribution. Drilling data confirm the reliability and effectiveness of this reservoir prediction method for coal-bearing strata. Based on successful applications in the eastern Ordos Basin, this workflow demonstrates broad applicability and offers significant guidance for exploring similar reservoirs, given the parallel reservoir characteristics and the foundational technological approach. |
| format | Article |
| id | doaj-art-8aa476bd649741a3a1db9333ba140e17 |
| institution | Kabale University |
| issn | 2296-6463 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Earth Science |
| spelling | doaj-art-8aa476bd649741a3a1db9333ba140e172025-01-07T06:50:31ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632025-01-011210.3389/feart.2024.14874871487487Seismic prediction technology for thin reservoirs of tight gas in coal measure strata: a case study of Block L in the eastern margin of the Ordos BasinYu QiKui WuQixin LiXiaowen ZhengBo WangDan LiWei TangThe development of high-accuracy seismic prediction technology, capable of mitigating the influence of coal events and accurately inverting key reservoir parameters, is critical for enhancing the exploration and development of tight gas reservoirs in coal-bearing strata. Block L, located on the eastern edge of the Ordos Basin, serves as a case study. This area, where tight sandstone gas deposits are widespread in the Upper Paleozoic, is characterized by coal seams that complicate seismic interpretation. The available drilling data show that the tight gas layers in the Taiyuan and Benxi Formations are well-developed and serve as the primary hydrocarbon source rocks. However, the low-density, low-velocity coal seams create strong wave impedance contrasts, which significantly affect the neighboring tight sandstone gas layers and present substantial challenges for seismic prediction. To address this issue, we employ wavelet decomposition and reconstruction techniques to eliminate coal seam interference and high-resolution waveform simulation technology for seismic prediction of thin reservoirs. This approach circumvents the limitations of using a single impedance parameter to differentiate between sand–mudstone and limestone–coal interfaces. Step-by-step inversion and gradual stripping techniques are applied to remove the influences of coal seam and limestone, thereby facilitating accurate identification of sandstone distribution. Drilling data confirm the reliability and effectiveness of this reservoir prediction method for coal-bearing strata. Based on successful applications in the eastern Ordos Basin, this workflow demonstrates broad applicability and offers significant guidance for exploring similar reservoirs, given the parallel reservoir characteristics and the foundational technological approach.https://www.frontiersin.org/articles/10.3389/feart.2024.1487487/fullseismic predictiontight gas reservoircoal seamwavelet decomposition and reconstructionwaveform simulation technology |
| spellingShingle | Yu Qi Kui Wu Qixin Li Xiaowen Zheng Bo Wang Dan Li Wei Tang Seismic prediction technology for thin reservoirs of tight gas in coal measure strata: a case study of Block L in the eastern margin of the Ordos Basin Frontiers in Earth Science seismic prediction tight gas reservoir coal seam wavelet decomposition and reconstruction waveform simulation technology |
| title | Seismic prediction technology for thin reservoirs of tight gas in coal measure strata: a case study of Block L in the eastern margin of the Ordos Basin |
| title_full | Seismic prediction technology for thin reservoirs of tight gas in coal measure strata: a case study of Block L in the eastern margin of the Ordos Basin |
| title_fullStr | Seismic prediction technology for thin reservoirs of tight gas in coal measure strata: a case study of Block L in the eastern margin of the Ordos Basin |
| title_full_unstemmed | Seismic prediction technology for thin reservoirs of tight gas in coal measure strata: a case study of Block L in the eastern margin of the Ordos Basin |
| title_short | Seismic prediction technology for thin reservoirs of tight gas in coal measure strata: a case study of Block L in the eastern margin of the Ordos Basin |
| title_sort | seismic prediction technology for thin reservoirs of tight gas in coal measure strata a case study of block l in the eastern margin of the ordos basin |
| topic | seismic prediction tight gas reservoir coal seam wavelet decomposition and reconstruction waveform simulation technology |
| url | https://www.frontiersin.org/articles/10.3389/feart.2024.1487487/full |
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