摘要
采用反相乳液聚合法,以有机物Q和P为原料,白油为分散介质,Span-80和Tween-80为复合乳化剂,合成二元共聚降失水剂FPQ-1。通过傅里叶红外光谱对FPQ-1的结构进行了表征,并研究了单体配比、引发剂加量和乳化剂加量对FPQ-1降失水性能的影响,当Q和P的摩尔比为2∶3,引发剂加量为1.0%,乳化剂占乳液的质量分数为8%时,合成的降失水剂FPQ-1具有优良的降失水性能。对加有降失水剂FPQ-1的水泥浆进行了全面的性能评价,结果表明,当FPQ-1掺量为1.5%时即可把滤失水量控制在20 mL以下;在压力为39.6 MPa,温度为60℃,FPQ-1掺量为1.5%的条件下,水泥浆稠化曲线具有"直角稠化"特点,满足现场固井施工要求;且FPQ-1具有较好的耐温耐盐性,与分散剂FASA、缓凝剂MAM的配伍性良好。
A fluid- loss additive FPQ- 1 was synthesized by inverse emulsion polymerization using organics Q and P as base material,white oil as dispersed medium,Span- 80 and Tween- 80 as compound emulsifier. The structure of FPQ- 1was represented by the Fourier transform infrared spectroscopy(FT- IR),the effect of ratio of monomer,dosage of initiator and emulsifier on API filtration was discussed,and fluid- loss additive FPQ- 1 had good fluid loss performance at synthesizing conditions as follows: n( Q) ∶ n( P) = 2 ∶ 3,dosage of initiator was 1. 0% and dosage of emulsifier was 8%. The performance of slurry that mixed FPQ- 1 was systematically evaluated. The results showed that: API filtration could be controlled within 20mL when FPQ- 1 addition amount was 1. 5%; when FPQ- 1addition amount was 1. 5%,pressure was 39. 6 MPa and temperature was 60 ℃,the thickening curve of slurry presented the characteristic of right angle thickening,FPQ- 1 not only has good resistance to high temperature and salt but also has good compatibility with dispersant and retarder,it showed the slurry could meet the cementing requirement.
出处
《钻采工艺》
CAS
北大核心
2013年第5期103-106,17,共4页
Drilling & Production Technology
关键词
反相乳液聚合
降失水剂
耐温
耐盐
inverse emulsion polymerization,fluid loss additive,heat resistance,salt resistance
