Study on dynamic and static elastic moduli of shale oil by different loading methods
Experiments on the dynamic and static elastic parameters under distinct loading conditions help clarify the effects of loading rate and strain amplitude on dynamic and static elastic moduli, and gain further insight into the moduli. Significant scientific guidance are provided for fracturing transfo...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2023-01-01
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| Series: | Unconventional Resources |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666519023000092 |
| _version_ | 1797682822704529408 |
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| author | Huiyuan Bian Fei Wang Wenan Chen Haiwen Wang |
| author_facet | Huiyuan Bian Fei Wang Wenan Chen Haiwen Wang |
| author_sort | Huiyuan Bian |
| collection | DOAJ |
| description | Experiments on the dynamic and static elastic parameters under distinct loading conditions help clarify the effects of loading rate and strain amplitude on dynamic and static elastic moduli, and gain further insight into the moduli. Significant scientific guidance are provided for fracturing transformation of oil shale reservoirs. AutoLab 1500, servo-controlled triaxial equipment with ultrasonic transducers, is used in an elastic parameter test on shale oil samples. The test concludes that the loading rate moves the dynamic elastic modulus little, with a maximum change rate of 0.8%, while it significantly affects the static elastic modulus by 31.7% at most. In the loading or unloading phase, the larger the initial differential stress (or strain), the higher the dynamic Young's modulus. The static elastic modulus, on the other hand, presents a significant negative correlation with the stress amplitude. To be specific, the smaller the strain amplitude, the higher the measured modulus; the larger the strain amplitude, the smaller the modulus. Given the loading rate, the smaller the differential stress, the smaller the difference between the dynamic and static elastic moduli. This study can provide a reference base for fracturing construction in oil shale. |
| first_indexed | 2024-03-12T00:05:25Z |
| format | Article |
| id | doaj.art-a889fe50606748469417c4451bf78726 |
| institution | Directory Open Access Journal |
| issn | 2666-5190 |
| language | English |
| last_indexed | 2024-03-12T00:05:25Z |
| publishDate | 2023-01-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Unconventional Resources |
| spelling | doaj.art-a889fe50606748469417c4451bf787262023-09-17T04:57:41ZengKeAi Communications Co., Ltd.Unconventional Resources2666-51902023-01-013183191Study on dynamic and static elastic moduli of shale oil by different loading methodsHuiyuan Bian0Fei Wang1Wenan Chen2Haiwen Wang3College of Geology & Environment, Xi'an University of Science and Technology, Xi'an, Shaanxi, 710054, China; Key Laboratory of Coal Resources Exploration and Comprehensive Utilization, MLR, Xi'an, Shaanxi, 710021, ChinaCollege of Geology Engineering and Geomatics, Chang'an University, Xi'an, Shaanxi, 710054, China; Corresponding author.PetroChina Qinghai Oilfield Company, Research Institute of Exploration and Development, Dunhuang, 763202, ChinaPetroChina Qinghai Oilfield Company, Research Institute of Exploration and Development, Dunhuang, 763202, ChinaExperiments on the dynamic and static elastic parameters under distinct loading conditions help clarify the effects of loading rate and strain amplitude on dynamic and static elastic moduli, and gain further insight into the moduli. Significant scientific guidance are provided for fracturing transformation of oil shale reservoirs. AutoLab 1500, servo-controlled triaxial equipment with ultrasonic transducers, is used in an elastic parameter test on shale oil samples. The test concludes that the loading rate moves the dynamic elastic modulus little, with a maximum change rate of 0.8%, while it significantly affects the static elastic modulus by 31.7% at most. In the loading or unloading phase, the larger the initial differential stress (or strain), the higher the dynamic Young's modulus. The static elastic modulus, on the other hand, presents a significant negative correlation with the stress amplitude. To be specific, the smaller the strain amplitude, the higher the measured modulus; the larger the strain amplitude, the smaller the modulus. Given the loading rate, the smaller the differential stress, the smaller the difference between the dynamic and static elastic moduli. This study can provide a reference base for fracturing construction in oil shale.http://www.sciencedirect.com/science/article/pii/S2666519023000092Shale oilStress cyclesDynamic and static elastic moduliRock mechanicsElastic parameters |
| spellingShingle | Huiyuan Bian Fei Wang Wenan Chen Haiwen Wang Study on dynamic and static elastic moduli of shale oil by different loading methods Unconventional Resources Shale oil Stress cycles Dynamic and static elastic moduli Rock mechanics Elastic parameters |
| title | Study on dynamic and static elastic moduli of shale oil by different loading methods |
| title_full | Study on dynamic and static elastic moduli of shale oil by different loading methods |
| title_fullStr | Study on dynamic and static elastic moduli of shale oil by different loading methods |
| title_full_unstemmed | Study on dynamic and static elastic moduli of shale oil by different loading methods |
| title_short | Study on dynamic and static elastic moduli of shale oil by different loading methods |
| title_sort | study on dynamic and static elastic moduli of shale oil by different loading methods |
| topic | Shale oil Stress cycles Dynamic and static elastic moduli Rock mechanics Elastic parameters |
| url | http://www.sciencedirect.com/science/article/pii/S2666519023000092 |
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