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发布时间：2024-05-15
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| 影响因子： | 4.6 |
| DOI码： | 10.1063/5.0151878 |
| 所属单位： | 长江大学非常规油气协同创新中心 |
| 发表刊物： | Physics of Fluids |
| 摘要： | The staged and multi-cluster fracturing of horizontal wells is the main fracturing technology used for shale gas reservoir development. Temporary plugging diversion (TPD) is an important technical means to realize a uniform propagation of hydraulic fractures and avoid problems such as frac hits (i.e., well-to-well interference). Although this technology has been extensively used worldwide, field monitoring results have shown that temporary plugging cannot effectively improve the nonuniform propagation of multiple fractures. The fundamental reason is the lack of an organic combination of laboratory research and field application. To solve this problem, this study investigated the reservoir adaptability and plugging performance of three types of temporary plugging agent (TPAs), namely, powder, particle, and fiber, used in the fracturing of wells in the Weiyuan (WY) shale gas field, Sichuan, China, using a pressure-bearing capacity test device for three dimensional (3D)-printing-simulated TPA. A calculation method for the plugging efficiency of the TPA was established, and the ratio and concentration of the TPA were optimized under different fracture widths. The similarity criterion was used to calculate the amount of TPA required for different fracture widths. A field application chart of the TPA was formulated, and a method that connects laboratory research and field application was established. The results showed that the three TPAs have good reservoir adaptability and degradation performance. It is recommended to use 200–400 mesh powder + 6 mm fiber with different concentrations and dosages when performing temporary plugging and fracturing at the front end of 1–3 mm fractures. In the case of inter-cluster TPD for a fracture width of 4–6 mm, a combination of 20 mesh powder + 6 mm fiber + 1–3 mm particles is recommended. The field application results showed that the pressure increased significantly at the front end of the fractures and during inter-cluster temporary plugging when the plugging agent was in place, and there were no frac hits in the adjacent wells. This paper provides a practical research method for hydraulic fracturing involving temporary plugging, from laboratory research to engineering application. |
| 合写作者： | 王挺,张良君 |
| 第一作者： | 续化蕾 |
| 论文类型： | 期刊论文 |
| 通讯作者： | 江厚顺,汪杰 |
| 学科门类： | 工学 |
| 文献类型： | J |
| 卷号： | 35 |
| 期号： | 6 |
| ISSN号： | 1070-6631 |
| 发表时间： | 2023-06-01 |
| 收录刊物： | SCI |
| 发布期刊链接： | https://doi.org/10.1063/5.0151878 |
