Knowledge Management System of Institute of Rock and Soil Mechanics,CAS
| Mechanical properties of marine shale and its roof and floor considering reservoir preservation and stimulation | |
| Wang, Lei1; Guo, Yintong1; Zhou, Xiaogui2; Yang, Guangguo3,4; Yang, Chunhe1,5; Xiao, Jialin6 | |
| 2022-04-01 | |
| Source Publication | JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
 |
| ISSN | 0920-4105 |
| Volume | 211Pages:14 |
| Abstract | The mechanical differences between reservoir rock and its overlying (roof) and underlying (floor) rocks have significant influence on oil/gas preservation and hydraulic fracture propagation, which is still lack of adequate research in marine shale gas formation. In this work, homogeneous intact specimens of roof siltstone, reservoir shale and floor limestone were prepared from representative outcrops, and the corresponding siltstone-shalelimestone composite samples were also fabricated with strong/weak interface cementation properties. Mechanical parameters, fracture morphology, brittleness, and failure mechanism of marine shale and its roof and floor in tri-axial compressive state were comparatively investigated. Results show that reservoir shale had relatively low compressive strength, Young's modulus, internal frictional angle, and cohesive strength, making it more susceptible to rupture, compared with the roof and floor. The floor limestone had relatively high strength and low brittleness, which were beneficial for maintaining its integrity and the preservation of shale gas during tectonic movement. Considering the high brittleness of roof siltstone, more attention should be given to the integrity of the roof, where fractures induced by tectonic movement could provide as a pathway of gas escape. Interface cementation property played a key role in the fracture propagation behavior at lithologic boundaries. Interfaces with weak cementation tended to arrest extending fractures, which was advantageous to gas preservation or fracture height control in reservoir stimulation. Whereas fracture would probably cross over strong cementation interfaces, leading to the threat of oil/gas leakage or incontrollable hydraulic fracture propagation in vertical direction. |
| Keyword | Marine shale Roof and floor Mechanical property Failure mode Preserving conditions Fracture propagation |
| DOI | 10.1016/j.petrol.2022.110194 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[52104010] |
| WOS Research Area | Energy & Fuels ; Engineering |
| WOS Subject | Energy & Fuels ; Engineering, Petroleum |
| WOS ID | WOS:000760808100003 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://119.78.100.198/handle/2S6PX9GI/34667 |
| Collection | 中科院武汉岩土力学所 |
| Corresponding Author | Guo, Yintong |
| Affiliation | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Rensselaer Polytech Inst, Dept Civil & Environm Engn, Troy, NY 12180 USA 3.State Key Lab Shale Oil & Gas Enrichment Mech & E, Beijing 100101, Peoples R China 4.Sinopec Res Inst Petr Engn, Beijing 100101, Peoples R China 5.Chongqing Univ, State Key Lab Coal Mine Disaster Dynam & Control, Chongqing 400044, Peoples R China 6.SINOPEC, Res Inst Petr Engn, Jianghan Oilfield Co, Wuhan 430035, Peoples R China |
| First Author Affilication | Institute of Rock and Soil Mechanics, chinese Academy of sciences |
| Corresponding Author Affilication | Institute of Rock and Soil Mechanics, chinese Academy of sciences |
| Recommended Citation GB/T 7714 | Wang, Lei,Guo, Yintong,Zhou, Xiaogui,et al. Mechanical properties of marine shale and its roof and floor considering reservoir preservation and stimulation[J]. JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,2022,211:14. |
| APA | Wang, Lei,Guo, Yintong,Zhou, Xiaogui,Yang, Guangguo,Yang, Chunhe,&Xiao, Jialin.(2022).Mechanical properties of marine shale and its roof and floor considering reservoir preservation and stimulation.JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,211,14. |
| MLA | Wang, Lei,et al."Mechanical properties of marine shale and its roof and floor considering reservoir preservation and stimulation".JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING 211(2022):14. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment