Log Calculation Method of Horizontal In-Situ Stress in BH Complex Fault Block Oilfield
The magnitude and direction of in-situ stress has great significance to oil and gas exploration & development engineering, and the accurate calculation of horizontal in-situ stress is the key. The fault structure is developed in Bohai oilfield, the state of in-situ stress is complicated and chan...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Well Logging Technology
2024-02-01
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| Series: | Cejing jishu |
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| Online Access: | https://www.cnpcwlt.com/#/digest?ArticleID=5556 |
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| _version_ | 1850261334237642752 |
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| author | WANG Miao LIU Xiaojian SU Wen XIA Hongquan HU Nan LAI Liliang |
| author_facet | WANG Miao LIU Xiaojian SU Wen XIA Hongquan HU Nan LAI Liliang |
| author_sort | WANG Miao |
| collection | DOAJ |
| description | The magnitude and direction of in-situ stress has great significance to oil and gas exploration & development engineering, and the accurate calculation of horizontal in-situ stress is the key. The fault structure is developed in Bohai oilfield, the state of in-situ stress is complicated and changeable, and the commonly used model for calculating horizontal in-situ stress has poor adaptability. Based on the characteristics of complex fault blocks in BH oilfield and the results of rock mechanics and in-situ stress simultaneous measurement, the influence degree of various fault elements on the horizontal in-situ stress is analyzed, and the influence factor KH and Kh estimation method of fault on the magnitude of in-situ stress are established. On this basis, the horizontal in-situ stress calculation model (BH model) suitable for complex fault block structure is improved. Using BH model and logging data, the horizontal in-situ stress of different layers in the working area can be calculated continuously and accurately. The calculation accuracy of in-situ stress is not only better than the traditional model, but also can meet the need of drilling and fracturing engineering. |
| format | Article |
| id | doaj-art-a31ffdc6e26d464d85e0e37b8126a378 |
| institution | OA Journals |
| issn | 1004-1338 |
| language | zho |
| publishDate | 2024-02-01 |
| publisher | Editorial Office of Well Logging Technology |
| record_format | Article |
| series | Cejing jishu |
| spelling | doaj-art-a31ffdc6e26d464d85e0e37b8126a3782025-08-20T01:55:27ZzhoEditorial Office of Well Logging TechnologyCejing jishu1004-13382024-02-01481273410.16489/j.issn.1004-1338.2024.01.0041004-1338(2024)01-0027-08Log Calculation Method of Horizontal In-Situ Stress in BH Complex Fault Block OilfieldWANG Miao0LIU Xiaojian1SU Wen2XIA Hongquan3HU Nan4LAI Liliang5Bohai Oilfield Research Institute, Tianjin Branch of CNOOC LTD., Tianjin 300452, ChinaBohai Oilfield Research Institute, Tianjin Branch of CNOOC LTD., Tianjin 300452, ChinaBohai Oilfield Research Institute, Tianjin Branch of CNOOC LTD., Tianjin 300452, ChinaPetroleum Engineering School, Southwest Petroleum University, Chengdu, Sichuan 610500, ChinaDean’s Office of Southwest Petroleum University, Nanchong Campus, Nanchong, Sichuan 637001, ChinaPetroleum Engineering School, Southwest Petroleum University, Chengdu, Sichuan 610500, ChinaThe magnitude and direction of in-situ stress has great significance to oil and gas exploration & development engineering, and the accurate calculation of horizontal in-situ stress is the key. The fault structure is developed in Bohai oilfield, the state of in-situ stress is complicated and changeable, and the commonly used model for calculating horizontal in-situ stress has poor adaptability. Based on the characteristics of complex fault blocks in BH oilfield and the results of rock mechanics and in-situ stress simultaneous measurement, the influence degree of various fault elements on the horizontal in-situ stress is analyzed, and the influence factor KH and Kh estimation method of fault on the magnitude of in-situ stress are established. On this basis, the horizontal in-situ stress calculation model (BH model) suitable for complex fault block structure is improved. Using BH model and logging data, the horizontal in-situ stress of different layers in the working area can be calculated continuously and accurately. The calculation accuracy of in-situ stress is not only better than the traditional model, but also can meet the need of drilling and fracturing engineering.https://www.cnpcwlt.com/#/digest?ArticleID=5556fault influence factorhorizontal in-situ stressbh modellog calculationbh fault block oilfield |
| spellingShingle | WANG Miao LIU Xiaojian SU Wen XIA Hongquan HU Nan LAI Liliang Log Calculation Method of Horizontal In-Situ Stress in BH Complex Fault Block Oilfield Cejing jishu fault influence factor horizontal in-situ stress bh model log calculation bh fault block oilfield |
| title | Log Calculation Method of Horizontal In-Situ Stress in BH Complex Fault Block Oilfield |
| title_full | Log Calculation Method of Horizontal In-Situ Stress in BH Complex Fault Block Oilfield |
| title_fullStr | Log Calculation Method of Horizontal In-Situ Stress in BH Complex Fault Block Oilfield |
| title_full_unstemmed | Log Calculation Method of Horizontal In-Situ Stress in BH Complex Fault Block Oilfield |
| title_short | Log Calculation Method of Horizontal In-Situ Stress in BH Complex Fault Block Oilfield |
| title_sort | log calculation method of horizontal in situ stress in bh complex fault block oilfield |
| topic | fault influence factor horizontal in-situ stress bh model log calculation bh fault block oilfield |
| url | https://www.cnpcwlt.com/#/digest?ArticleID=5556 |
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