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Synthesis and plugging behavior of fluorescent polymer microspheres as a kind of conformance control agent in reservoirs

机译：储层一致性控制剂荧光聚合物微球的合成与堵塞行为。

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The fluorescent polymer microsphere is a newly developed chemical agent for conformance control in reservoirs. In this paper, one kind of fluorescent polymer microspheres P(AM-BA-RhB) was synthesized via the inverse suspension polymerization method with Rhodamine B as a fluorescence functional monomer. Laboratory experiments were performed to characterize the morphology, fluorescent property, swelling property and plugging behavior of fluorescent polymer microspheres. The experimental results showed that the polymer microspheres P(AM-BA-RhB) displayed stable fluorescence performance in solutions containing metal ions at pH values between 3.0 and 10.0. The swelling property was not dramatically affected by the Rhodamine B embedded in the polymer microspheres by grafting. Both a visual micromodel test and sand-pack tubes experiment demonstrated that the fluorescent polymer microspheres could pass directly or by deformation through porous media and get into the in-depth formation. The injection pressure showed the phenomenon of “Wave-type Variation”. Three plugging behaviors such as piston plugging, protruding plugging and fingering plugging were put forward. The introduction of fluorescent polymer microspheres could provide one method to research the conformance control and EOR mechanism of polymer microspheres in the reservoirs.
机译：荧光聚合物微球是一种新开发的化学试剂，用于控制储层中的一致性。以罗丹明B为荧光官能团单体，采用反相悬浮聚合法合成了一种荧光聚合物微球P（AM-BA-RhB）。进行实验室实验以表征荧光聚合物微球的形态，荧光性质，溶胀性质和堵塞行为。实验结果表明，聚合物微球P（AM-BA-RhB）在pH值为3.0至10.0的含金属离子的溶液中表现出稳定的荧光性能。通过接枝嵌入聚合物微球中的若丹明B并未显着影响溶胀性能。视觉微模型测试和沙包管实验均表明，荧光聚合物微球可以直接通过多孔介质变形，也可以通过变形进入多孔结构。注射压力显示出“波型变化”现象。提出了活塞堵漏，突出堵漏和指堵堵漏三种堵漏行为。荧光聚合物微球的引入可以为研究储层中聚合物微球的一致性控制和EOR机理提供一种方法。

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