A downhole tool for controlling the flow of a fluid in a wellbore comprises: an annular body having a flow passage therethrough; a frustoconical element disposed about the annular body; a sealing element carried on the annular body and configured to engage a portion of the frustoconical element; and a bottom sub disposed about the annular body; wherein at least one of the frustoconical element and the bottom sub comprise a polymeric composite that includes: a polymer component comprising one or more of the following: a poly(ether ether ketone); or an epoxy, and a filler crosslinked with the polymer component.
一种用于控制井筒中流体流动的井下工具包括:一个环形体,其上有一个流动通道;一个围绕环形体布置的锥形元件;一个密封元件,其承载在环形体上,并被配置为与锥形元件的一部分相啮合;以及一个围绕环形体布置的底子;其中,锥形元件和底子中的至少一个由聚合物复合材料组成,该聚合物复合材料包括:
聚醚醚酮;或环氧
树脂,以及与聚合物成分交联的填料。