| Title | Experimental Study on the Transport Law of Different Fracturing Granular Materials in Fracture |
| Authors | Lv, Mingkun Qu, Zhanqing Guo, Tiankui Chen, Ming Zhang, Yuanhang Jia, Xuliang Liu, Xiaoqiang Liu, Yiwen |
| Affiliation | China Univ Petr East China, Key Lab Unconvent Oil & Gas Dev, Minist Educ, Qingdao 266580, Shandong, Peoples R China China Univ Petr East China, Coll Petr Engn, Qingdao 266580, Shandong, Peoples R China Oil & Gas Technol Res Inst Changing Oil field Co, Xian 710018, Shaanxi, Peoples R China Natl Engn Lab Low Permeabil Oil & Gas Field, Xian 710018, Shaanxi, Peoples R China Peking Univ, Sch Earth & Space Sci, Beijing 100091, Peoples R China |
| Keywords | PROPPANT SIMULATION POLYMERS |
| Issue Date | Sep-2022 |
| Publisher | ENERGY & FUELS |
| Abstract | Hydraulic fracturing is an important technology for the development of unconventional oil and gas. The complexity and filling of fractures are important factors for determining the fracturing effect. In order to control the fracture shape and improve the filling of the fracture, it is necessary to inject granular materials such as a temporary plugging agent (TPA) and special performance proppant into the fracture. Understanding the transport law of these granular materials in the fracture can guide us to optimize the fracturing scheme and improve the fracturing effect. In this paper, we studied the transport characteristics of granular TPA, floating (ULD) proppant, and conventional quartz sand based on the large visual granular transport equipment. The results show that when the TPA of different sizes is injected successively to plug fractures, 20 mPa center dot s fracturing fluid is suggested for carrying 16/20 mesh TPA in the early stage, and slickwater is suggested for carrying 40/60 mesh TPA in the later stage. The methods of stopping the pump many times with low floating agent concentration or stopping the pump once with high concentration are two ways to realize that the floating agent is laid in the upper part of the fracture to form an artificial barrier. When the injection rate is large, we can only choose the latter. In slickwater, the newly coated quartz sand produces bubbles on its surface and adsorbs each other, which enhances its transport capacity and reduces the amount of sand used. Micron proppant and ULD proppant have the characteristics of less settlement in the major fracture and more settlement in the branched fracture, so they are suitable for filling branched fractures. |
| URI | http://hdl.handle.net/20.500.11897/654575 |
| ISSN | 0887-0624 |
| DOI | 10.1021/acs.energyfuels.2c02023 |
| Indexed | SCI(E) |
| Appears in Collections: | 地球与空间科学学院 |
