环氧树脂
钻探
井漏
循环(流体动力学)
地温梯度
地质学
环境科学
钻井液
材料科学
石油工程
机械工程
复合材料
工程类
地球物理学
航空航天工程
作者
Kaixiao Cui,Guancheng Jiang,Chunlin Xie,Lili Yang,Yinbo He,Xiulun Shen,Xingxing Wang
出处
期刊:Geothermics
[Elsevier]
日期:2021-05-30
卷期号:95: 102145-102145
被引量:33
标识
DOI:10.1016/j.geothermics.2021.102145
摘要
• The applications of shape memory polymer in petroleum industry were reviewed. • Lost circulation materials based on shape memory epoxy foams (SMP-LCM) with temperature response and expandable properties were designed and synthesized. • The shape memory mechanism of shape memory epoxy foams used to prepare SMP-LCMs was revealed. • The plugging experiment demonstrated that the SMP-LCMs were effective in loss control. Lost circulation will inevitably increase non-productive time (NPT) and well cost. The application of high-efficiency lost circulation materials (LCMs) plays an indispensable role in preventing and mitigating loss. The development of new LCMs based on stimuli-responsive materials is an important research direction and it is expected to realize the revolutionary development of LCMs. In recent years, the temperature-responsive plugging agent based on shape memory polymers has caused a lot of attention. In this paper, based on the shape memory epoxy polymer (SMEP) and hollow glass beads (HGBs), a shape memory epoxy foam (SMEF) was successfully synthesized. The results show that the shape memory temperature (51.6 °C - 97.5 °C) of the SMEPs has a good linear relationship with the content of curing agent 4, 4′-diaminodiphenyl methane (DDM) (12% - 20%), and the expansion ratio (0% - 120.2%) of the SMEFs has a good linear relationship with the content of HGBs (0% - 50%). The mechanism of the SMEFs was proposed. A novel temperature-sensitive and expandable plugging agent (SMP-LCM) has been developed. The plugging experiment shows that SMP-LCM has a good plugging effect on high permeability loss zone simulated by sand beds. Compared with conventional LCMs (e.g., nutshells or fibers), SMP-LCMs can eliminate the risk of plugging of downhole drilling tools and enhance the plugging effect.
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