Effects and practical applications of present-day in-situ stress on reservoir quality in ultra-deep layers of Kuqa Depression, Tarim Basin, China
There is a significant relationship between in-situ stress and reservoir quality, to reinvent the theoretical understanding and technical methods of reservoir evaluation from the perspective of in-situ stress. Based on rock mechanical test and logging data, combined with regional evolution and struc...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2022-04-01
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| Series: | Journal of Natural Gas Geoscience |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2468256X22000074 |
| _version_ | 1797713137242210304 |
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| author | Ke Xu Jun Tian Haijun Yang Hui Zhang Wei Ju Xinyu Liu Zhimin Wang Lu Fang |
| author_facet | Ke Xu Jun Tian Haijun Yang Hui Zhang Wei Ju Xinyu Liu Zhimin Wang Lu Fang |
| author_sort | Ke Xu |
| collection | DOAJ |
| description | There is a significant relationship between in-situ stress and reservoir quality, to reinvent the theoretical understanding and technical methods of reservoir evaluation from the perspective of in-situ stress. Based on rock mechanical test and logging data, combined with regional evolution and structural deformation, this study carried out systematic geomechanics research, proposing the quantitative characterization of stress concentration parameters to realize the optimization of favorable zones. The results show that in-situ stress and fracture permeability under its control are important factors in determining the productivity in the ultra-deep reservoir. It is preferable to choose a location with low stress and good fracture activity, rather than an adverse location such as a local stress concentration area characterized by frequent borehole breakouts. The imbalance between in-situ stress and rock strength causes high stress. Moreover, the accuracy of reservoir classification is improved by incorporating the relevant parameters under the influence of in-situ stress into the evaluation method of reservoir quality. It is vital to fully utilize the multiple advantages of highly deviated wells with various favorable areas and multiple vertical fractures to address complex problems and improve the efficiency of exploration and development. |
| first_indexed | 2024-03-12T07:31:55Z |
| format | Article |
| id | doaj.art-47533e34ffae4eef8e637017312ad36c |
| institution | Directory Open Access Journal |
| issn | 2468-256X |
| language | English |
| last_indexed | 2024-03-12T07:31:55Z |
| publishDate | 2022-04-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Natural Gas Geoscience |
| spelling | doaj.art-47533e34ffae4eef8e637017312ad36c2023-09-02T21:43:11ZengKeAi Communications Co., Ltd.Journal of Natural Gas Geoscience2468-256X2022-04-01728594Effects and practical applications of present-day in-situ stress on reservoir quality in ultra-deep layers of Kuqa Depression, Tarim Basin, ChinaKe Xu0Jun Tian1Haijun Yang2Hui Zhang3Wei Ju4Xinyu Liu5Zhimin Wang6Lu Fang7PetroChina Tarim Oilfield Company, Korla, 841000, China; Corresponding author.PetroChina Tarim Oilfield Company, Korla, 841000, ChinaPetroChina Tarim Oilfield Company, Korla, 841000, ChinaPetroChina Tarim Oilfield Company, Korla, 841000, ChinaSchool of Resources and Geosciences, China University of Mining and Technology, Xuzhou, 221116, ChinaPetroChina Tarim Oilfield Company, Korla, 841000, ChinaPetroChina Tarim Oilfield Company, Korla, 841000, ChinaPetroChina Tarim Oilfield Company, Korla, 841000, ChinaThere is a significant relationship between in-situ stress and reservoir quality, to reinvent the theoretical understanding and technical methods of reservoir evaluation from the perspective of in-situ stress. Based on rock mechanical test and logging data, combined with regional evolution and structural deformation, this study carried out systematic geomechanics research, proposing the quantitative characterization of stress concentration parameters to realize the optimization of favorable zones. The results show that in-situ stress and fracture permeability under its control are important factors in determining the productivity in the ultra-deep reservoir. It is preferable to choose a location with low stress and good fracture activity, rather than an adverse location such as a local stress concentration area characterized by frequent borehole breakouts. The imbalance between in-situ stress and rock strength causes high stress. Moreover, the accuracy of reservoir classification is improved by incorporating the relevant parameters under the influence of in-situ stress into the evaluation method of reservoir quality. It is vital to fully utilize the multiple advantages of highly deviated wells with various favorable areas and multiple vertical fractures to address complex problems and improve the efficiency of exploration and development.http://www.sciencedirect.com/science/article/pii/S2468256X22000074Kuqa DepressionUltra-deep reservoirIn-situ stressHeterogeneityHighly deviated well |
| spellingShingle | Ke Xu Jun Tian Haijun Yang Hui Zhang Wei Ju Xinyu Liu Zhimin Wang Lu Fang Effects and practical applications of present-day in-situ stress on reservoir quality in ultra-deep layers of Kuqa Depression, Tarim Basin, China Journal of Natural Gas Geoscience Kuqa Depression Ultra-deep reservoir In-situ stress Heterogeneity Highly deviated well |
| title | Effects and practical applications of present-day in-situ stress on reservoir quality in ultra-deep layers of Kuqa Depression, Tarim Basin, China |
| title_full | Effects and practical applications of present-day in-situ stress on reservoir quality in ultra-deep layers of Kuqa Depression, Tarim Basin, China |
| title_fullStr | Effects and practical applications of present-day in-situ stress on reservoir quality in ultra-deep layers of Kuqa Depression, Tarim Basin, China |
| title_full_unstemmed | Effects and practical applications of present-day in-situ stress on reservoir quality in ultra-deep layers of Kuqa Depression, Tarim Basin, China |
| title_short | Effects and practical applications of present-day in-situ stress on reservoir quality in ultra-deep layers of Kuqa Depression, Tarim Basin, China |
| title_sort | effects and practical applications of present day in situ stress on reservoir quality in ultra deep layers of kuqa depression tarim basin china |
| topic | Kuqa Depression Ultra-deep reservoir In-situ stress Heterogeneity Highly deviated well |
| url | http://www.sciencedirect.com/science/article/pii/S2468256X22000074 |
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