新型高分子中空微珠的制备及现场应用
发布时间：2019-05-06 08:52
【摘要】：前期研发的聚苯乙烯中空微珠作为钻井液减轻剂在现场应用中易团聚,极易与钻屑吸附而被固控设备除去,导致钻井液密度逐渐升高。为解决聚苯乙烯中空微珠存在的吸附、团聚问题,从壳体本体性质、表面改性入手,优化设计出具有双层结构的高分子中空微珠,室内优化WF单体、催化剂、发泡剂、表面改性剂、防静电剂等关键材料的加量,并采用喷雾干燥装置制备出了SMHPS-2型高分子中空微珠。室内研究表明,制备出的高分子中空微珠微观形貌呈圆球颗粒,表面致密光滑,粒径均小于100μm,平均密度为0.31~0.32 g/cm~3,抗压达50 MPa,抗温达90℃,具有良好的抗研磨性、分散稳定性,自身不团聚,且与钻屑无吸附效应。锦111井的现场试验表明,基液中加入4%SMHPS-2型高分子中空微珠减轻剂可将密度降低0.04 g/cm~3,且与固控设备具有良好的适应性,无吸附、团聚现象,具有良好的抗剪切能力。
[Abstract]:The polystyrene hollow beads developed earlier are easy to be agglomerated in the field application and easily adsorbed with drilling debris and removed by solid control equipment, which leads to a gradual increase in drilling fluid density. In order to solve the problem of adsorption and agglomeration of polystyrene hollow beads, the macromolecule hollow beads with bilayer structure were optimized from the properties of shell body and surface modification, and the WF monomer, catalyst and blowing agent were optimized in the laboratory. The surface modifier, antistatic agent and other key materials were added, and SMHPS- 2 polymer hollow beads were prepared by spray drying device. The results show that the micro-morphology of the hollow polymer beads is spherical particles, the surface is compact and smooth, the particle size is less than 100 渭 m, the average density is 0.31 ~ 0.32 g / cm ~ (3), the compressive pressure reaches 50 MPa, and the temperature resistance reaches 90 鈩，
本文编号：2470045
[Abstract]:The polystyrene hollow beads developed earlier are easy to be agglomerated in the field application and easily adsorbed with drilling debris and removed by solid control equipment, which leads to a gradual increase in drilling fluid density. In order to solve the problem of adsorption and agglomeration of polystyrene hollow beads, the macromolecule hollow beads with bilayer structure were optimized from the properties of shell body and surface modification, and the WF monomer, catalyst and blowing agent were optimized in the laboratory. The surface modifier, antistatic agent and other key materials were added, and SMHPS- 2 polymer hollow beads were prepared by spray drying device. The results show that the micro-morphology of the hollow polymer beads is spherical particles, the surface is compact and smooth, the particle size is less than 100 渭 m, the average density is 0.31 ~ 0.32 g / cm ~ (3), the compressive pressure reaches 50 MPa, and the temperature resistance reaches 90 鈩，
本文编号：2470045
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