随行振动固井技术是指在常规固井作业中，胶塞在套管内一边下行一边振动以此提高固井质量。固井工程最主要的设备是固井胶塞，因胶塞在深井、超深井固井中磨损严重使其易发生脱落、失效等现象，导致不能很好地完成固井作业。本文针对随行振动固井胶塞工作时摩擦磨损严重的问题进行研究，通过对胶塞外形结构和本体材料进行优化改进后，提出在胶塞表面增加复合纤维布的技术方法来提高耐磨性。主要研究内容如下：

       论文在分析影响固井质量和固井胶塞失效原因的基础上，对随行振动固井胶塞的结构和材料进行了优化改进。胶塞本体材料使用含碳纤维丁腈橡胶替换了常规的丁腈橡胶、增加了胶碗的数量、降低了胶碗的硬度、改变了各胶碗之间的距离，在两口井况相似的井中通过CBL曲线对比了胶塞结构和材料改进前后的固井质量。

       为了提高随行振动固井胶塞在超深井中的耐磨性，提出了采用复合纤维布材料增加在固井胶塞表面增强耐磨性的方法。分析对比了芳纶、尼龙、腈纶和涤纶四种复合纤维材料物理性能，用Abaqus软件分别做四种复合纤维布与砂轮摩擦时的热-力耦合仿真实验，确定一种耐磨性好的复合纤维布。在织物组织结构是影响其耐磨性主要原因的基础上，对复合纤维布组织结构进行改变，设计出四种经纬密度不同的复合纤维布，在Abaqus软件中分别做四种组织结构不同的复合纤维布与砂轮摩擦时的热-力耦合仿真实验，确定一种组织结构耐磨性好的复合纤维布。

       最后对四种不同结构复合纤维布进行织备，通过拉伸性能测试和摩擦磨损实验确定一种经纬密度耐磨性好的复合纤维布。根据实验和仿真的相互验证确定出一种经纬密度耐磨性最优的复合纤维布作为增强随行振动胶塞耐磨性的材料。

       Accompanying vibration cementing technology means that in conventional cementing operations, the rubber plug vibrates while descending inside the casing to improve the cementing quality. The most important equipment for cementing projects is cementing rubber plugs. Because of the serious wear and tear of rubber plugs in deep and ultra-deep well cementing, they are prone to fall off and fail, which makes cementing operations impossible to complete. In this paper, the serious friction and wear problems of the rubber plugs in accompanying vibratory cementing work are studied. After optimizing and improving the shape and structure of the rubber plugs and the body materials, a technical method of adding composite materials on the surface of the rubber plugs is proposed to improve the wear resistance. The main research contents are as follows:

      Based on the analysis of the factors affecting the cementing quality and the failure of cementing rubber plugs, the structure and materials of the traveling vibration cementing rubber plugs are optimized and improved. The rubber plug body material uses carbon fiber-containing nitrile rubber to replace the conventional nitrile rubber, increases the number of rubber bowls, reduces the hardness of the rubber bowls, and changes the distance between the rubber bowls. It passes through two wells with similar well conditions. The CBL curve compares the cementing quality before and after the improvement of rubber plug structure and material.

       In order to improve the wear resistance of the traveling vibration cementing rubber plug in ultra-deep wells, a method of using composite fiber cloth material to increase the wear resistance of the cementing rubber plug surface is proposed. The physical properties of aramid, nylon, acrylic and polyester four composite fiber materials were analyzed and compared. Abaqus software was used to conduct thermal-mechanical coupling simulation experiments when the four composite fiber cloths rubbed against the grinding wheel to determine a good wear resistance. Composite fiber cloth. On the basis that the fabric structure is the main factor affecting its abrasion resistance, the structure of the composite fiber cloth was changed, and four composite fiber cloths with different warp and weft densities were designed, and four composite fiber cloths with different structures were made in the Abaqus software. The thermal-mechanical coupling simulation experiment of the friction between the fiber cloth and the grinding wheel determines a composite fiber cloth with good structure and wear resistance.

       Finally, four kinds of composite fiber cloths with different structures are woven, and a composite fiber cloth with good warp and weft density and abrasion resistance is determined through tensile performance test and friction and wear experiment. According to the mutual verification of experiment and simulation, a composite fiber cloth with the best warp and weft density and wear resistance was determined as a composite material to enhance the wear resistance of the traveling vibration rubber plug.

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