Influence of rock heterogeneity on hydraulic fracturing: A parametric study using the combined finite-discrete element method
文献类型：期刊论文
| 作者 | Wu, Mingyang3,4; Gao, Ke3; Liu, Jianjun2; Song, Zhenlong3; Huang, Xiaolin1 |
| 刊名 | INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
 |
| 出版日期 | 2022 |
| 卷号 | 234页码:18 |
| 关键词 | Hydraulic fracturing Combined finite-discrete element method Rock heterogeneity Propagation regimes Fracture morphology |
| ISSN号 | 0020-7683 |
| DOI | 10.1016/j.ijsolstr.2021.111293 |
| 英文摘要 | Hydraulic fracturing has proven to be an efficient technique to enhance production in unconventional reservoirs. Since heterogeneity is commonplace in reservoir rocks, it is vital to investigate the influence of rock heterogeneity on hydraulic fracture propagation. Here, based on the combined finite-discrete element method (FDEM) and cohesive zone model, two series of numerical models with uniformly distributed and Weibull-distributed elastic modulus of rock are assembled, respectively. The comparison with the theoretical solution demonstrates the reliability of the simulation models in both the toughness-dominated regime (TDR) and viscositydominated regime (VDR). The parameter analysis demonstrates the rationality of parameters for cohesive elements. The results show that the previous theoretical equations can be used as a preliminary evaluation of simulation parameters. The effects of different parameters such as element size, Weibull distribution type, and far-field stress on hydraulic fracture length, fluid pressure, maximum fracture aperture, and the final fracture morphology are evaluated. The results demonstrate that the distribution type of rock elastic modulus has a significant impact on the hydraulic fracture propagation in both TDR and VDR. The "jump" phenomena have been observed in TDR caused by high fracture toughness. The displacement of fracture location and asymmetrically dynamic propagation are affected by the distribution of rock elastic modulus. Besides, the hydraulic fracture propagation in TDR is more susceptible to element size, the distribution of rock elastic modulus, and farfield stress than that in VDR. This research may shed light on the development of hydraulic fracturing technology in tight reservoirs. |
| 资助项目 | National Natural Science Foundation of China[42004036] ; National Natural Science Foundation of China[51804049] ; National Natural Science Foundation of China[51874053] ; Postdoctoral Science Foundation of State Key Laboratory of Coal Mine Disaster Dynamics and Control[2011DA105287-BH201905] |
| WOS研究方向 | Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:000714622200004 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/28368]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Gao, Ke; Huang, Xiaolin |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Wuhan Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 3.Southern Univ Sci & Technol, Dept Earth & Space Sci, Shenzhen 518055, Peoples R China 4.Chongqing Univ, Sch Resources & Safety Engn, State Key Lab Coal Mine Disaster Dynam & Control, Chongqing 400030, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Mingyang,Gao, Ke,Liu, Jianjun,et al. Influence of rock heterogeneity on hydraulic fracturing: A parametric study using the combined finite-discrete element method[J]. INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES,2022,234:18. |
| APA | Wu, Mingyang,Gao, Ke,Liu, Jianjun,Song, Zhenlong,&Huang, Xiaolin.(2022).Influence of rock heterogeneity on hydraulic fracturing: A parametric study using the combined finite-discrete element method.INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES,234,18. |
| MLA | Wu, Mingyang,et al."Influence of rock heterogeneity on hydraulic fracturing: A parametric study using the combined finite-discrete element method".INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES 234(2022):18. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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