两性离子钻井液成膜封堵剂的研制及性能研究
发布时间:2018-05-25 02:14
本文选题:三乙基烯丙基氯化铵 + 成膜封堵剂 ; 参考:《应用化工》2017年02期
【摘要】:以丙烯酰胺(AM)、烯丙基磺酸钠(AS)和三乙基烯丙基氯化铵(TEAC)为原料,制备了一种两性离子三元共聚物AM/AS/TEAC。复配AM/AS/TEAC和超细碳酸钙(1 250目),得一种针对低渗透油气储层的新型成膜封堵剂QP-8。两性离子三元共聚物AM/AS/TEAC的最佳聚合条件为:单体配比AM∶AS∶TEAC=83∶12∶5,p H为7,反应温度50℃,单体总浓度18%,引发剂用量(Na2S2O8∶Na HSO3=1∶1,摩尔比)为0.4%,反应时间为4 h。以自制可视中压砂管为评价装置,以砂床侵入深度和API滤失量为评价指标,得出AM/AS/TEAC与超细碳酸钙的最佳配比为0.2∶1。评价结果表明QP-8封堵性要好于一些油田已经有所应用的成膜封堵剂。
[Abstract]:An amphoteric terpolymer AM / as / tea was prepared by using acrylamide amylase, allyl sodium sulfonate (ASA) and triethylallylammonium chloride (TEAC) as raw materials. A new film-forming plugging agent QP-8 for low permeability oil and gas reservoir was obtained by combining AM/AS/TEAC and superfine calcium carbonate with 1 250 mesh. The optimum polymerization conditions of amphoteric terpolymer AM/AS/TEAC are as follows: the monomer ratio of AM: ASTEACU 83: 12: 5pH is 7, the reaction temperature is 50 鈩,
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