吸水膨胀树脂堵漏材料的研制及其室内性能评价

Synthesis and laboratory performance evaluation of water absorbent resin plugging agent

针对石油开采过程中遇到的井漏问题,为了增强堵漏材料在漏失通道的滞留能力,设计并制备了2种新型结构的吸水膨胀树脂堵漏材料。一种以丙烯酰胺、阳离子单体、交联剂及植物纤维类桥堵剂为原料,另一种以丙烯酰胺、丙烯酸、阳离子单体、交联剂为原料,采用氧化还原引发体系,室温共聚制备出吸水树脂与纤维复合材料及吸水膨胀树脂材料,其粒径可根据堵漏作业需要进行调整。采用红外光谱对吸水膨胀树脂的结构进行了分析表征,并测定了2种类型堵漏材料在清水中的吸水倍数。结果表明:吸水树脂与纤维复合材料及吸水膨胀树脂材料4 h吸水倍数分别在14.99~39.09倍和41.41~92.06倍;可以通过改变单体比例、交联剂和引发剂加量的方式调整材料的吸水倍数。

Two kinds of water absorbent resin plugging agent are designed and synthesized to improve the retention capabilities to leakage path. One of them, named composite plugging agent, is synthesized using acrylamide, cationic monomer, plant fiber bridge plugging agent and crosslinking agent as raw materials. The other one, named water absorbent resin plugging agent, is synthesized u-sing acrylamide, acrylic acid, cationic monomer and crosslinking agent as raw materials. The polymerization is conducted in the aque-ous solution at room temperature, using redox initiator for both systems. The target product is identified by infrared spectrum （FT-IR） and the water-absorbency is measured. The results show that the composite plugging agent can absorb 14. 99 to 39. 09 multiple of water within 4 hours, while the water absorbent resin plugging agent can absorb 41.41 to 92. 06 multiple. The water-absorbency of the mate-rial can be adjusted by changing the ratio of monomer, crosslinking agent and initiator.