Comparative Study of Marine and Lacustrine Shale Reservoirs from the Viewpoint of Rock Mechanics
文献类型：期刊论文
| 作者 | Wang, Lei2; Yang, Hanzhi1; Guo, Yintong2; Bi, Zhenhui1; Guo, Wuhao2; Yang, Chunhe1,2 |
| 刊名 | ENERGY & FUELS
 |
| 出版日期 | 2021-12-02 |
| 卷号 | 35期号:23页码:19481-19495 |
| ISSN号 | 0887-0624 |
| DOI | 10.1021/acs.energyfuels.1c03312 |
| 英文摘要 | Marine and lacustrine shales are two major important types of organic-rich shales that are usually deposited in the stable ocean basin and deep lake/swamp settings, respectively. In the past decade, commercial development of marine shale gas resources has been achieved. The underdeveloped lacustrine shale also showed great oil and gas potential. Is it feasible to simply copy the development mode of marine shale gas to lacustrine shale? This is what this paper would attempt to answer from the viewpoint of rock mechanics. Using borehole cores from two typical marine and lacustrine shale gas wells, a series of experiments, including X-ray diffraction (XRD), triaxial compression, fracture surface three-dimensional (3D) scanning, and scanning electron microscopy (SEM), were implemented to comprehensively reveal the mechanical difference between marine and lacustrine shales. Postfailure fracture complexity and surface roughness were quantified by fractal dimension and morphology reconstruction, respectively. A new index BInew, considering the influences of the complete stress-strain curve and fracture characteristics, was proposed to evaluate the brittleness of these two types of shales. Results showed that the mechanical properties of marine and lacustrine shales were quite different and should be exploited by following their own characteristics. Mechanical parameters of lacustrine shale, such as compressive strength, Young's modulus, cohesive strength, and internal friction angle, were much lower than those of marine shale. Different from the typical shear plus bedding splitting failure mode of marine shale, lacustrine shale usually formed only one smooth shear fracture. Based on the newly proposed index, the brittleness of lacustrine shale was significantly lower than that of marine shale. Huge discrepancy in quartz and clay mineral contents and the consequent petrophysical structure divergence were the reasons for the marked mechanical difference between marine and lacustrine shales. Differentiation strategies and effects of hydraulic fracturing for these two kinds of formations were also discussed. |
| 资助项目 | National Natural Science Foundation of China[52104010] |
| WOS研究方向 | Energy & Fuels ; Engineering |
| 语种 | 英语 |
| 出版者 | AMER CHEMICAL SOC |
| WOS记录号 | WOS:000750883400050 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34436]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Guo, Yintong |
| 作者单位 | 1.Chongqing Univ, State Key Lab Coal Mine Disaster Dynam & Control, Chongqing 400044, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Lei,Yang, Hanzhi,Guo, Yintong,et al. Comparative Study of Marine and Lacustrine Shale Reservoirs from the Viewpoint of Rock Mechanics[J]. ENERGY & FUELS,2021,35(23):19481-19495. |
| APA | Wang, Lei,Yang, Hanzhi,Guo, Yintong,Bi, Zhenhui,Guo, Wuhao,&Yang, Chunhe.(2021).Comparative Study of Marine and Lacustrine Shale Reservoirs from the Viewpoint of Rock Mechanics.ENERGY & FUELS,35(23),19481-19495. |
| MLA | Wang, Lei,et al."Comparative Study of Marine and Lacustrine Shale Reservoirs from the Viewpoint of Rock Mechanics".ENERGY & FUELS 35.23(2021):19481-19495. |
入库方式： OAI收割
来源：武汉岩土力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。