论文部分内容阅读
为解决油田用丙烯酰胺类聚合物抗温、抗盐性能差的问题,以丙烯酰胺、丙烯酸及双尾型疏水单体N-苯乙基-N十二烷基甲基丙烯酰胺(PEDMAM)为主要原料,合成了一种新型疏水缔合聚合物(DTHAP-12)。采用KYPAM作为对比,研究了DTHAP-12的增黏性能、抗温抗盐能力和驱油性能,结果表明,聚合物的临界缔合质量浓度在2 400 mg/L左右,95℃聚合物的黏度保留率达72.39%,同时在一定的矿化度范围内表现出明显的盐增稠效应。岩心驱替实验表明,水驱至含水率为98%后,0.3 PV DTHAP-12驱及后续水驱的采收率提高了15.14%;聚合物驱第2段塞DTHAP-12采收率提高了10.53%,远远高于第2段塞KYPAM的3.28%。
In order to solve the problem of poor heat resistance and salt resistance of acrylamide polymer in oil field, acrylamide, acrylic acid and two-tailed hydrophobic monomer N-phenethyl-N-dodecylmethacrylamide (PEDMAM) The main raw material, a new type of hydrophobic association polymer (DTHAP-12) was synthesized. Using KYPAM as contrast, the thickening property, temperature resistance and salt resistance ability and oil displacement performance of DTHAP-12 were studied. The results showed that the critical mass concentration of polymer was about 2400 mg / L, the viscosity of polymer at 95 ℃ Retention rate of 72.39%, at the same time within a certain degree of salinity showed obvious salt thickening effect. The core flooding experiments showed that the recovery of 0.3 PV DTHAP-12 flooding and subsequent water flooding increased by 15.14% after water flooding to 98% moisture content; and the recovery of DTHAP-12 in the second flooding of polymer flooding increased 10.53%, much higher than 3.28% of KYPAM in the second segment.