Shaly detritus embedded epoxy-resin coated proppants

作     者：Zhao-Hui Lu Xiu-Ping Lan Yong Yuan Jian-Kun Zhou Si-Yuan Chen Fan Fan Ying-Chun Niu Shou-Zhen Li Kai-Yi Hu Yang Zhou Quan Xu Zhao-Hui Lu;Xiu-Ping Lan;Yong Yuan;Jian-Kun Zhou;Si-Yuan Chen;Fan Fan;Ying-Chun Niu;Shou-Zhen Li;Kai-Yi Hu;Yang Zhou;Quan Xu

作者机构：Key Laboratory of Shale Gas ExplorationMinistry of Natural ResourcesChongqing Institute of Geology and Mineral ResourcesChongqing401120China State Key Laboratory of Petroleum Resources and ProspectingBejing Key Laboratory of Biogas Upgrading UtlizationHarvard SEAS-CUPB Joint Laboratory on Petroleum ScienceChina University of Petroleum(Beijing)Beijing102249China 

出 版 物：《Petroleum Science》 (石油科学（英文版）)

年 卷 期：2022年第19卷第4期

页      面：1735-1744页

核心收录：

学科分类：0820[工学-石油与天然气工程] 08[工学] 082002[工学-油气田开发工程] 

基　　金：supported by the National Key Research and Development Program of China (Grant No. 2020YFC1808102) National Natural Science Foundation of China (No. 52074059) Chongqing Science Foundation for Distinguished Young Scholars(cstc2021jcyj-jqX0007) Science Foundation of China University of Petroleum,Beijing (Nos. 2462019BJRC007, 2462019QNXZ02) 

主　　题：Coated proppant Shaly detritus Hydrophobicity Conductivity 

摘      要：Proppant plays a significant role in the hydraulic fracturing process, which can affect the production of oil and gas wells. Due to the high density and low adhesion force, the settling speed of traditional proppants is fast, which will lead to the blockage of a crack channel. In this study, a proppant with double layer structure is fabricated by coating epoxy-resin and shaly detritus on ceramic proppants for the first time,respectively. The epoxy-resin enables the shaly detritus to be coated on the proppant successfully, which can provide a new method for shaly detritus treatment. The adhesive ability of shaly detritus and epoxyresin coated proppants(SEPs) is improved by 10.4% under the load force of 500 n N, which prolongs the time for the fracture to close. At the same time, the suspending ability of SEPs is two times higher than the uncoated proppants. Once the guar gum solution concentration is 0.3 wt%, the settling time of SEPs is36.7% longer than that of the uncoated proppants, which can effectively reduce the settlement of proppants in the crack. In addition, the hydrophobicity of the SEPs is enhanced, which reduces the wateroil ratio of crude oil and increases the liquid conductivity tested by deionized water. In summary, this new proppant is expected to promote the development of unconventional oil and gas resources.