西南石油大学学报(自然科学版)

• 油气化学工程 • 上一篇    下一篇

一种丙烯酰胺共聚物磷酸盐的合成及性能研究

苟绍华1,2 *,杨成2,叶仲斌1,2,常静3,马永涛2   

  1. 1.“油气藏地质及开发工程”国家重点实验室· 西南石油大学,四川成都610500
    2. 西南石油大学化学化工学院,四川成都610500
    3. 哈里伯顿(中国)能源服务有限公司,四川成都610500
  • 出版日期:2015-02-01 发布日期:2015-02-01
  • 通讯作者: 苟绍华,E-mail:shaohuagou@swpu.edu.cn
  • 基金资助:

    四川省科技支撑计划(2012FZ0130)。

Synthesis and Properties of an Acrylamide Copolymer Based on Phosphate

Gou Shaohua1,2*, Yang Cheng2, Ye Zhongbin1,2, Chang Jing3, Ma Yongtao2   

  1. 1. State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu,Sichuan 610500,China
    2. School of Chemistry and Chemical Engineering,Southwest Petroleum University,Chengdu,Sichuan 610500,China
    3. Halliburton Energy Services(China)Co. Ltd.,Chengdu,Sichuan 610500,China
  • Online:2015-02-01 Published:2015-02-01

摘要:

以丙烯酸(AA)、丙烯酰胺(AM)、(1–二甲氨基–烯丙基)– 膦酸(DMAAPA)及N –烯丙基辛酰亚
胺(NAOI)为原料、亚硫酸氢钠–过硫酸铵为引发剂制备了一种水溶性四元共聚物AA/AM/DMAAPA/NAOI。
单因素实验确立了该共聚物的最佳合成条件:反应温度为45 ?C,引发剂加量为0.3%,pH 为7,
m(AM):m(AA):m(DMAAPA):m(DMAAPA)= 6.000:4.000:0.015:0.030;通过红外光谱(IR)、核磁共振氢谱(1H
NMR)对该共聚物驱油剂的分子结构进行了表征,证明功能单体均已共聚在分子链上;2 000 mg/L 的该共聚物溶液在
120 ?C时的黏度保留率为28.9%,在1 000 s−1 时黏度保留率为18.7%,当NaCl 加量为1.2 g/L 时黏度保留率为22.2%;
室内模拟驱油实验结果表明,在65 ?C 下2 000 mg/L 的该共聚物溶液相对于水驱可提高采收率达到10.54%。

关键词: 磷酸盐, 丙烯酰胺共聚物, 耐温, 抗盐, 抗剪切, 驱油剂

Abstract:

An acrylamide copolymer was synthesized using acrylamide(AM),acrylic acid(AA),(1-dimethylamino-allyl)-
phosphoric acid(DMAAPA)and N-allyl octyl imide(NAOI)as raw materials and NaHSO3-(NH4)2S2O8 as initiator. The
optimum synthetic conditions were determined as follows:the appropriate temperature was 45 ?C,the initiator was found to be
0.3%,the pH was 7,and m(AM):m(AA):m(DMAAPA):m(DMAAPA)=6.0:4.0:0.015:0.030. The molecular structure
of the copolymer was confirmed by IR and 1H NMR,proving that the functional monomers were present in the molecule chain.
The retention rate of the copolymer could reach 28.9%(120 ?C),18.7%(1 000 s−1),and 22.2%(1.2 g/L NaCl)respectively
according to the performance evaluation. Up to 10.54% enhanced oil recovery(EOR)could be obtained by core flood testing
using 2 000 mg/L copolymer at 65 ?C.

Key words: phosphate, acrylamide copolymer, temperature-tolerance, salt-tolerance, shear-resistance, EOR chemical