Diagenetic facies quantitative evaluation of low-permeability sandstone: A case study on Chang 8 reservoirs in the Zhenbei area, Ordos basin
Quantitative characterization of diagenetic facies has great significance for reservoir evaluation and prediction. In order to find out the method to evaluate diagenetic facies, the author took Chang 8 2 reservoir low-permeability sandstone in Zhenbei area of Ordos basin as research object and divid...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2018-05-01
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| Series: | Energy Exploration & Exploitation |
| Online Access: | https://doi.org/10.1177/0144598717738813 |
| _version_ | 1811294877298720768 |
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| author | Baoquan Ma Shaochun Yang Hong Zhang Qingdong Kong Chunting Song Ya Wang Qinglin Bai Xidong Wang |
| author_facet | Baoquan Ma Shaochun Yang Hong Zhang Qingdong Kong Chunting Song Ya Wang Qinglin Bai Xidong Wang |
| author_sort | Baoquan Ma |
| collection | DOAJ |
| description | Quantitative characterization of diagenetic facies has great significance for reservoir evaluation and prediction. In order to find out the method to evaluate diagenetic facies, the author took Chang 8 2 reservoir low-permeability sandstone in Zhenbei area of Ordos basin as research object and divided the reservoir into six types of diagenetic facies by analysis of casting thin section, scanning electron microscope, cathode luminescence, and physical property. According to 14 quantitative evaluating parameters which were related with petrology characteristic, diagenesis strength, pore structure, etc. quantitative evaluation of diagenetic facies of low-permeability sandstone reservoir was done by data envelopment analysis. The result showed that in the Chang 8 2 reservoir low-permeability sandstone in Zhenbei area of Ordos basin, quantitative representative indexes of diagenetic facies ranged from 0 to 1.00. Various diagenetic facies and their indexes had interval corresponding relation. The diagenetic facies of weak corrosion with chlorite mat and the diagenetic facies of corrosion of unstable components had the best reservoir quality. Their diagenetic facies indexes ranged from 0.66 to 1.00. The reservoir quality of the diagenetic facies filled with kaolinite was not as good as the former. The indexes ranged from 0.50 to 0.66. The diagenetic facies of quartz secondary enlargement and the diagenetic facies of clay mineral cementation replacement had poor reservoir quality. Their diagenetic facies indexes ranged from 0.30 to 0.40. The diagenetic facies of carbonate cementation had the poorest reservoir quality. It hardly possessed fluid storage capability. After comparing diagenetic facies indexes, absorption strength and remaining oil saturability, the perfect corresponding relation between quantitative evaluation results and reservoir quality could be verified. |
| first_indexed | 2024-04-13T05:24:07Z |
| format | Article |
| id | doaj.art-a95dc3666a464969badcc698d437018f |
| institution | Directory Open Access Journal |
| issn | 0144-5987 2048-4054 |
| language | English |
| last_indexed | 2024-04-13T05:24:07Z |
| publishDate | 2018-05-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Energy Exploration & Exploitation |
| spelling | doaj.art-a95dc3666a464969badcc698d437018f2022-12-22T03:00:39ZengSAGE PublishingEnergy Exploration & Exploitation0144-59872048-40542018-05-013610.1177/0144598717738813Diagenetic facies quantitative evaluation of low-permeability sandstone: A case study on Chang 8 reservoirs in the Zhenbei area, Ordos basinBaoquan Ma0Shaochun Yang1Hong Zhang2Qingdong Kong3Chunting Song4Ya Wang5Qinglin Bai6Xidong Wang7Reservoir Geology Key Laboratory of Shandong Province, Qingdao, ChinaReservoir Geology Key Laboratory of Shandong Province, Qingdao, ChinaResearch Institute of Exploration and Development, PetroChina Liaohe Oilfield Company, Panjin, Liaoning, ChinaCNPC Greatwall Drilling Company, Beijing, ChinaCNPC Greatwall Drilling Company, Beijing, ChinaSchool of Geosciences, , Qingdao, ChinaSchool of Geosciences, , Qingdao, ChinaSchool of Geosciences, , Qingdao, ChinaQuantitative characterization of diagenetic facies has great significance for reservoir evaluation and prediction. In order to find out the method to evaluate diagenetic facies, the author took Chang 8 2 reservoir low-permeability sandstone in Zhenbei area of Ordos basin as research object and divided the reservoir into six types of diagenetic facies by analysis of casting thin section, scanning electron microscope, cathode luminescence, and physical property. According to 14 quantitative evaluating parameters which were related with petrology characteristic, diagenesis strength, pore structure, etc. quantitative evaluation of diagenetic facies of low-permeability sandstone reservoir was done by data envelopment analysis. The result showed that in the Chang 8 2 reservoir low-permeability sandstone in Zhenbei area of Ordos basin, quantitative representative indexes of diagenetic facies ranged from 0 to 1.00. Various diagenetic facies and their indexes had interval corresponding relation. The diagenetic facies of weak corrosion with chlorite mat and the diagenetic facies of corrosion of unstable components had the best reservoir quality. Their diagenetic facies indexes ranged from 0.66 to 1.00. The reservoir quality of the diagenetic facies filled with kaolinite was not as good as the former. The indexes ranged from 0.50 to 0.66. The diagenetic facies of quartz secondary enlargement and the diagenetic facies of clay mineral cementation replacement had poor reservoir quality. Their diagenetic facies indexes ranged from 0.30 to 0.40. The diagenetic facies of carbonate cementation had the poorest reservoir quality. It hardly possessed fluid storage capability. After comparing diagenetic facies indexes, absorption strength and remaining oil saturability, the perfect corresponding relation between quantitative evaluation results and reservoir quality could be verified.https://doi.org/10.1177/0144598717738813 |
| spellingShingle | Baoquan Ma Shaochun Yang Hong Zhang Qingdong Kong Chunting Song Ya Wang Qinglin Bai Xidong Wang Diagenetic facies quantitative evaluation of low-permeability sandstone: A case study on Chang 8 reservoirs in the Zhenbei area, Ordos basin Energy Exploration & Exploitation |
| title | Diagenetic facies quantitative evaluation of low-permeability sandstone: A case study on Chang 8 reservoirs in the Zhenbei area, Ordos basin |
| title_full | Diagenetic facies quantitative evaluation of low-permeability sandstone: A case study on Chang 8 reservoirs in the Zhenbei area, Ordos basin |
| title_fullStr | Diagenetic facies quantitative evaluation of low-permeability sandstone: A case study on Chang 8 reservoirs in the Zhenbei area, Ordos basin |
| title_full_unstemmed | Diagenetic facies quantitative evaluation of low-permeability sandstone: A case study on Chang 8 reservoirs in the Zhenbei area, Ordos basin |
| title_short | Diagenetic facies quantitative evaluation of low-permeability sandstone: A case study on Chang 8 reservoirs in the Zhenbei area, Ordos basin |
| title_sort | diagenetic facies quantitative evaluation of low permeability sandstone a case study on chang 8 reservoirs in the zhenbei area ordos basin |
| url | https://doi.org/10.1177/0144598717738813 |
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