Short‐term failure mechanism triggered by hydraulic fracturing
Abstract Hydraulic fracturing may induce or trigger an earthquake while injecting fluid into strata to initiate a new fracture so as to promote oil and gas production. Previous studies have confirmed that the injection of fluids into the formation, especially hydraulic fracturing, is closely related...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-03-01
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| Series: | Energy Science & Engineering |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/ese3.535 |
| _version_ | 1811331038043963392 |
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| author | Gang Wang Yixin Liu Jiang Xu |
| author_facet | Gang Wang Yixin Liu Jiang Xu |
| author_sort | Gang Wang |
| collection | DOAJ |
| description | Abstract Hydraulic fracturing may induce or trigger an earthquake while injecting fluid into strata to initiate a new fracture so as to promote oil and gas production. Previous studies have confirmed that the injection of fluids into the formation, especially hydraulic fracturing, is closely related to seismic activity. However, the mechanism through which fluid injection changes the stress field of rock mass and interacts with the in situ stress state is still poorly understood. This study focused on the short‐term mechanism coupling shear stress and hydraulic fracturing in an experimental simulation. Preexisting tension fractures were initiated and propagated by loading shear force. The fracture propagation path of hydraulic fracturing was closely related to the preexisting fractures formed by the preshear stress. Short‐term hydraulic fracturing promoted fracture propagation and acoustic emission events (or microearthquake signals), but it was less likely to cause rock mass instability or a large earthquake. The long‐term fluid injection could saturate preexisting fractures and infiltrate rock mass to increase the pore pressure and change the in situ stress field in a large area to induce an earthquake. |
| first_indexed | 2024-04-13T16:14:07Z |
| format | Article |
| id | doaj.art-a7e50e3d940649729c9163ad016126e8 |
| institution | Directory Open Access Journal |
| issn | 2050-0505 |
| language | English |
| last_indexed | 2024-04-13T16:14:07Z |
| publishDate | 2020-03-01 |
| publisher | Wiley |
| record_format | Article |
| series | Energy Science & Engineering |
| spelling | doaj.art-a7e50e3d940649729c9163ad016126e82022-12-22T02:40:08ZengWileyEnergy Science & Engineering2050-05052020-03-018359260110.1002/ese3.535Short‐term failure mechanism triggered by hydraulic fracturingGang Wang0Yixin Liu1Jiang Xu2College of Mining and Safety Engineering Shandong University of Science and Technology Qingdao ChinaCollege of Mining and Safety Engineering Shandong University of Science and Technology Qingdao ChinaState Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing University Chongqing ChinaAbstract Hydraulic fracturing may induce or trigger an earthquake while injecting fluid into strata to initiate a new fracture so as to promote oil and gas production. Previous studies have confirmed that the injection of fluids into the formation, especially hydraulic fracturing, is closely related to seismic activity. However, the mechanism through which fluid injection changes the stress field of rock mass and interacts with the in situ stress state is still poorly understood. This study focused on the short‐term mechanism coupling shear stress and hydraulic fracturing in an experimental simulation. Preexisting tension fractures were initiated and propagated by loading shear force. The fracture propagation path of hydraulic fracturing was closely related to the preexisting fractures formed by the preshear stress. Short‐term hydraulic fracturing promoted fracture propagation and acoustic emission events (or microearthquake signals), but it was less likely to cause rock mass instability or a large earthquake. The long‐term fluid injection could saturate preexisting fractures and infiltrate rock mass to increase the pore pressure and change the in situ stress field in a large area to induce an earthquake.https://doi.org/10.1002/ese3.535fluid injectionshear stressshort‐termtrigger earthquake |
| spellingShingle | Gang Wang Yixin Liu Jiang Xu Short‐term failure mechanism triggered by hydraulic fracturing Energy Science & Engineering fluid injection shear stress short‐term trigger earthquake |
| title | Short‐term failure mechanism triggered by hydraulic fracturing |
| title_full | Short‐term failure mechanism triggered by hydraulic fracturing |
| title_fullStr | Short‐term failure mechanism triggered by hydraulic fracturing |
| title_full_unstemmed | Short‐term failure mechanism triggered by hydraulic fracturing |
| title_short | Short‐term failure mechanism triggered by hydraulic fracturing |
| title_sort | short term failure mechanism triggered by hydraulic fracturing |
| topic | fluid injection shear stress short‐term trigger earthquake |
| url | https://doi.org/10.1002/ese3.535 |
| work_keys_str_mv | AT gangwang shorttermfailuremechanismtriggeredbyhydraulicfracturing AT yixinliu shorttermfailuremechanismtriggeredbyhydraulicfracturing AT jiangxu shorttermfailuremechanismtriggeredbyhydraulicfracturing |