Accurate Calculation of Tight Sandstone Permeability Based on Multi-Key Well Average Curve Standardization Scheme
The tight sandstone reservoirs in area X exhibit complex geological conditions and strong longitudinal and horizontal heterogeneity. The collection of logging data spans a long time period and the standardization degree of logging data is low. The complex influencing factors of reservoir parameters...
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Editorial Office of Well Logging Technology
2024-08-01
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| Series: | Cejing jishu |
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| Online Access: | https://www.cnpcwlt.com/#/digest?ArticleID=5622 |
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| author | SUI Qiang LI Xueying ZHU Baifeng HE Xuchao |
| author_facet | SUI Qiang LI Xueying ZHU Baifeng HE Xuchao |
| author_sort | SUI Qiang |
| collection | DOAJ |
| description | The tight sandstone reservoirs in area X exhibit complex geological conditions and strong longitudinal and horizontal heterogeneity. The collection of logging data spans a long time period and the standardization degree of logging data is low. The complex influencing factors of reservoir parameters lead to low calculation accuracy of porosity and permeability. Therefore, a logging curve standardization scheme with multi-key well average, double standard layer control, mutual verification of trend surface method and histogram method is proposed to systematically solve a series of problems such as phase change, loss, heterogeneity and eigenvalue anomaly in a single standard layer. The proposed scheme significantly improves the accuracy of porosity calculation after standardization. Furthermore, a reservoir classification standard is established based on the fluid flow unit theory, and an accurate calculation model for classification permeability based on fluid flow unit is constructed. Using multiple linear regression method, the fluid flow unit calculation model characterized by logging curves is established to realize the continuous and quantitative evaluation of reservoir classification and permeability calculation. The newly proposed standardization scheme improves the stability, adaptability, and reliability of logging curve standardization, thus providing a solid data foundation for reservoir classification and parameter calculation. This method offers robust technical support for the detailed evaluation of tight reservoirs in area X, and holds significant application and promotion value. |
| format | Article |
| id | doaj-art-d2e669db35e64dd5a572fd40b69f85c8 |
| institution | OA Journals |
| issn | 1004-1338 |
| language | zho |
| publishDate | 2024-08-01 |
| publisher | Editorial Office of Well Logging Technology |
| record_format | Article |
| series | Cejing jishu |
| spelling | doaj-art-d2e669db35e64dd5a572fd40b69f85c82025-08-20T02:33:23ZzhoEditorial Office of Well Logging TechnologyCejing jishu1004-13382024-08-0148448849910.16489/j.issn.1004-1338.2024.04.0091004-1338(2024)04-0488-12Accurate Calculation of Tight Sandstone Permeability Based on Multi-Key Well Average Curve Standardization SchemeSUI Qiang0LI Xueying1ZHU Baifeng2HE Xuchao3College of Earth Science, Northeast Petroleum University, Daqing, Heilongjiang 163318, ChinaCollege of Earth Science, Northeast Petroleum University, Daqing, Heilongjiang 163318, ChinaCollege of Earth Science, Northeast Petroleum University, Daqing, Heilongjiang 163318, ChinaFangxing Branch, CNPC Daqing Oilfield, Daqing, Heilongjiang 163000, ChinaThe tight sandstone reservoirs in area X exhibit complex geological conditions and strong longitudinal and horizontal heterogeneity. The collection of logging data spans a long time period and the standardization degree of logging data is low. The complex influencing factors of reservoir parameters lead to low calculation accuracy of porosity and permeability. Therefore, a logging curve standardization scheme with multi-key well average, double standard layer control, mutual verification of trend surface method and histogram method is proposed to systematically solve a series of problems such as phase change, loss, heterogeneity and eigenvalue anomaly in a single standard layer. The proposed scheme significantly improves the accuracy of porosity calculation after standardization. Furthermore, a reservoir classification standard is established based on the fluid flow unit theory, and an accurate calculation model for classification permeability based on fluid flow unit is constructed. Using multiple linear regression method, the fluid flow unit calculation model characterized by logging curves is established to realize the continuous and quantitative evaluation of reservoir classification and permeability calculation. The newly proposed standardization scheme improves the stability, adaptability, and reliability of logging curve standardization, thus providing a solid data foundation for reservoir classification and parameter calculation. This method offers robust technical support for the detailed evaluation of tight reservoirs in area X, and holds significant application and promotion value.https://www.cnpcwlt.com/#/digest?ArticleID=5622log evaluationtight sandstone reservoirmulti-key well averagingcurve standardizationpermeability modelingflow zone index |
| spellingShingle | SUI Qiang LI Xueying ZHU Baifeng HE Xuchao Accurate Calculation of Tight Sandstone Permeability Based on Multi-Key Well Average Curve Standardization Scheme Cejing jishu log evaluation tight sandstone reservoir multi-key well averaging curve standardization permeability modeling flow zone index |
| title | Accurate Calculation of Tight Sandstone Permeability Based on Multi-Key Well Average Curve Standardization Scheme |
| title_full | Accurate Calculation of Tight Sandstone Permeability Based on Multi-Key Well Average Curve Standardization Scheme |
| title_fullStr | Accurate Calculation of Tight Sandstone Permeability Based on Multi-Key Well Average Curve Standardization Scheme |
| title_full_unstemmed | Accurate Calculation of Tight Sandstone Permeability Based on Multi-Key Well Average Curve Standardization Scheme |
| title_short | Accurate Calculation of Tight Sandstone Permeability Based on Multi-Key Well Average Curve Standardization Scheme |
| title_sort | accurate calculation of tight sandstone permeability based on multi key well average curve standardization scheme |
| topic | log evaluation tight sandstone reservoir multi-key well averaging curve standardization permeability modeling flow zone index |
| url | https://www.cnpcwlt.com/#/digest?ArticleID=5622 |
| work_keys_str_mv | AT suiqiang accuratecalculationoftightsandstonepermeabilitybasedonmultikeywellaveragecurvestandardizationscheme AT lixueying accuratecalculationoftightsandstonepermeabilitybasedonmultikeywellaveragecurvestandardizationscheme AT zhubaifeng accuratecalculationoftightsandstonepermeabilitybasedonmultikeywellaveragecurvestandardizationscheme AT hexuchao accuratecalculationoftightsandstonepermeabilitybasedonmultikeywellaveragecurvestandardizationscheme |