摘要
为获得适合高温蒸汽吞吐热采井使用的防砂剂,将F-51型酚醛环氧树脂和E-39D型双酚A环氧树脂(质量比1∶3)复配,再与固化剂4-甲基咪唑、硅烷偶联剂和环氧活性增韧剂反应制得复合树脂防砂剂。通过测量固结岩心的抗压强度优化了复合树脂防砂剂固化的配方,研究了固结岩心的耐温、耐酸碱和渗透性。结果表明,复合树脂防砂剂固化的最佳配方(以石英砂质量为基准计)为:10%复合树脂、1.0%4-甲基咪唑、0.25%偶联剂、2.5%活性增韧剂。按此配方在60℃下固化2 d得到的固结岩心的抗压强度约为13 MPa;固结岩心耐温性较好,在260℃下放置7 d后的抗压强度为11.99 MPa;固结岩心在5%酸碱溶液、饱和NaCl溶液和柴油中浸泡7 d后的抗压强度均大于3.5 MPa,满足正常注汽及采油强度要求;固结岩心渗透性较好,渗透率为70.21μm^2,满足高温蒸汽吞吐热采井稠油开采的要求。
In order to obtain the sand-control agent used in high-temperature steam stimulation well, compound resin of phenolic epoxy resin F-51 and pouring bisphenol A epoxy resin E-39D in mass ratio 1 ： 3 reacted with curing agent （4-methyl imidazole）, silane coupling agent and epoxy active toughening agent to produce composite resin sand-control agent. The solidified formula of composite resin sand-control agent was optimized by measuring the compressive strength of consolidated core, and the temperature resistance, acid and alkali resistance, and permeability of consolidated core were studied. The results showed that the optimum formula of composite resin sand-control agent was obtained as follows： 10% composite resin, 1.0% 4-methyl imidazole, 0.25% coupling agent and 2.5% toughening agent based on the mass of quartz. The compressive strength of consolidated core according to the optimum formula curing 2 days at 60℃ was about 13 MPa. The compressive strength of consolidated core placing 7 days at 260℃ was 11.99 MPa, showing good high-temperature resistance. The compressive strength of consolidated core was more than 3.5 MPa, when the core was soaked in 5% acid or alkali solution, saturated NaC1 solution and diesel for 7 days, which satisfied the strength requirement of normal steam stimulation and oil production. Moreover, the permeability of consolidated core was good with 70.21μm^2, which met the requirement of heavy oil exploitation in high-temperature steam stimulation well.
出处
《油田化学》
CAS
CSCD
北大核心
2016年第4期653-657,共5页
Oilfield Chemistry
关键词
高温蒸汽吞吐油井
防砂剂
复合树脂
固结岩心
high-temperature steam stimulation well
sand-control agent
composite resin
consolidated core
