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液固两相防砂剂CYL 1为可固化的悬浮液 ,固相为密度 1.15～ 1.30 g/cm3 、粒径 0 .2～ 0 .5mm(适用于弧东油田 )的矿渣颗粒 ,液相为加有固化剂、偶联剂 (KH 5 5 0 )及增孔剂 (清水 ) ,密度 1.10～ 1.2 0 g/cm3 的改性脲醛树脂 (UF K)溶液。该防砂剂可满足油藏开发后期分层防砂施工的要求。报道了主要组分 (脲醛树脂、偶联剂 )品种和矿渣颗粒粒度的选择。基于各组分用量和液固比的优选 ,根据固结样抗折强度和渗透率两项性能 ,确定了基本配方 :液固体积比 1∶0 .6～ 0 .8,UF K、固化剂、偶联剂、增孔剂质量比 10 0∶0 .7∶1.0∶5 0。基本配方悬浮液粘度在2 0 0mPa·s左右 ,在 6 0℃能保持稳定 2h ,固化时间 >1h ,固结样抗折强度 >3.0MPa ,渗透率 2 .6 μm2 ,耐 6 0℃的清水、污水、卤水、柴油和原油 ,在 6 0℃的 10 %盐酸和 5 %NaOH溶液中破坏。用基本配方液相固结孤东地层砂 ,在5 0℃放置 2d后 ,抗折强度 3.1MPa ,渗透率 2 .1μm2 。
Liquid-solid two-phase sand control agent CYL 1 is a curable suspension, the solid phase density of 1.15 ~ 1.30 g / cm3, particle size 0.2 ~ 0.5mm (for arc East Oil Field) slag particles, liquid plus There are curing agent, coupling agent (KH550) and pore-forming agent (water), the density of 1.10 ~ 1.2 0 g / cm3 modified urea formaldehyde resin (UF K) solution. The sand control agent can meet the requirements of stratified sand control construction in the late stage of reservoir development. The selection of the main components (urea-formaldehyde resin, coupling agent) and the particle size of slag are reported. Based on the optimum dosage of each component and the ratio of liquid to solid, the basic formula was determined according to the properties of consolidated flexural strength and permeability: liquid to solid volume ratio of 1: 0.6 to 0.6, UF K, curing agent , Coupling agent, pore-increasing agent mass ratio 10 0: 0: 7: 1.0: 5 0. The basic formula of the suspension viscosity of about 2000mPa · s, stable at 60 ℃ 2h, curing time> 1h, consolidation-like flexural strength> 3.0MPa, permeability 2.6μm2, resistant to water at 60 ℃ Sewage, brine, diesel and crude oil were destroyed in 10% hydrochloric acid and 5% NaOH solution at 60 ° C. Solid solution was used to solidify the Gudong formation sand with the basic formula. After being stored at 50 ℃ for 2 days, the flexural strength was 3.1 MPa and the permeability was 2.1 μm 2.