【摘要】：針對遼河油田注水區(qū)塊現(xiàn)有顆粒類深部調(diào)驅(qū)堵劑耐溫、抗剪切性能差,成膠強(qiáng)度低,有效期短,壓力提升幅度有限等問題,采用丙烯酰胺與天然橡膠膠乳、乙烯基吡咯烷酮通過自由基共聚,經(jīng)膠體干燥、造粒得到具有良好柔韌性和粘彈性能的柔性凝膠顆粒,并確定了最佳聚合反應(yīng)條件:單體濃度30%,丙烯酰胺:天然橡膠膠乳:乙烯基吡咯烷酮質(zhì)量比為1:0.8:0.3,交聯(lián)劑濃度0.05%,引發(fā)劑(甲醛合次硫酸氫鈉與過硫酸銨質(zhì)量比為1:2)濃度0.6%,聚合反應(yīng)溫度65℃。同時確定了用于懸浮凝膠顆粒的凝膠配方體系:聚合物800 mg/L、交聯(lián)劑400 mg/L、穩(wěn)定劑80 mg/L,得到了凝膠顆�，F(xiàn)場應(yīng)用的合理粒徑中值為2 mm,最佳使用濃度范圍1%~3%�，F(xiàn)場試驗(yàn)結(jié)果表明:凝膠顆粒對調(diào)驅(qū)壓力提升作用明顯,具有很高的可行性和實(shí)用性,為注水區(qū)塊穩(wěn)油控水提供了有力的技術(shù)保障。
[Abstract]:Aiming at the problems of high temperature resistance, poor shear resistance, low gelatinizing strength, short validity period and limited pressure lifting range of the existing particle deep adjusting and plugging agents in the water injection block of Liaohe Oilfield, acrylamide and natural rubber latex were adopted. Vinyl pyrrolidone was copolymerized by free radical and dried by colloid to obtain flexible gel particles with good flexibility and viscoelasticity. The optimum polymerization conditions were determined as follows: monomer concentration 30%, acrylamide: natural rubber latex: vinyl pyrrolidone 1: 0.8: 0.3, crosslinking agent concentration 0.05, initiator (mass ratio of formaldehyde sodium bisulfate to ammonium persulfate 1:2) The polymerization temperature is 65 鈩，

本文編號：2199331