Fracture pressure model for inclined wells in layered formations with anisotropic rock strengths
文献类型：期刊论文
| 作者 | Ma, Tianshou1,2,3; Zhang, Q. B.3; Chen, Ping2; Yang, Chunhe1; Zhao, J.3 |
| 刊名 | JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
 |
| 出版日期 | 2017 |
| 卷号 | 149页码:393-408 |
| 关键词 | Layered formations Fracture pressure Inclined well Anisotropic tensile strength Tensile failure criterion |
| ISSN号 | 0920-4105 |
| DOI | 10.1016/j.petrol.2016.10.050 |
| 英文摘要 | Fracture pressure is one of the most important foundations of drilling engineering, and the anisotropy of tensile strength is also a distinct feature of layered formations, but the anisotropy of tensile strength has seldom received attention in the analysis of fracture pressure. In the present paper, a novel fracture pressure model was proposed for inclined wells in layered formations with anisotropic rock strengths. Firstly, the characteristics of anisotropic tensile strength were investigated. Secondly, four typical anisotropic tensile criteria were collected and assessed using the maximum absolute relative error (MARE), the average absolute relative error (AARE), and the standard error (SE). Thirdly, the fracture pressure model was proposed based on the stress distribution model and anisotropic tensile criterion. Finally, the influences of anisotropy ratio, bedding planes' occurrence, well path, in-situ stress and pore pressure on fracture pressure were investigated. The results indicated that the layered rocks display the distinct anisotropy in tensile strength, and the strength increases with the loading angle. The MARE, AARE and SE of the Nova-Zaninetti criterion is the lowest for all six kinds of typical layered rocks, followed by the Lee-Pietruszczak, Hobbs-Barron, and Single Plane of Weakness criteria, and therefore the Nova-Zaninetti criterion is recommended. The higher the anisotropy ratio in tensile strength, the higher the influence on fracture pressure involved. The influence of bedding planes' occurrence mainly depends on the initiation position of the fractures, the influence increases with increasing the horizontal stress ratio and pore pressure. Thus, the influence of anisotropy cannot be ignored in the prediction of fracture pressure. |
| WOS研究方向 | Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000393007900036 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3984]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Southwest Petr Univ, State Key Lab Oil & Gas Reservoir Geol & Exploita ; 3.Monash Univ, Dept Civil Engn |
| 推荐引用方式 GB/T 7714 | Ma, Tianshou,Zhang, Q. B.,Chen, Ping,et al. Fracture pressure model for inclined wells in layered formations with anisotropic rock strengths[J]. JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,2017,149:393-408. |
| APA | Ma, Tianshou,Zhang, Q. B.,Chen, Ping,Yang, Chunhe,&Zhao, J..(2017).Fracture pressure model for inclined wells in layered formations with anisotropic rock strengths.JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,149,393-408. |
| MLA | Ma, Tianshou,et al."Fracture pressure model for inclined wells in layered formations with anisotropic rock strengths".JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING 149(2017):393-408. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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