适合稠油油藏的新型复合降黏解堵增产体系性能评价
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摘要
稠油油藏具有黏度高、沥青质和胶质含量高及流动性差等特点,在生产过程中易造成严重的储层损害,降低油井产量,进而影响油田的整体开发效果。针对海上某稠油油藏在开发过程中易造成储层损害的情况,对降黏剂、缓蚀剂及助排剂进行了优选,开发了一种适合稠油油藏的新型复合降黏解堵增产体系,其配方(w)为:2.5%JNJ-1+2.5%JNJ-2+2.5%HYJS-3+3.0%NH_4HF_2+1.0%HSJ-3+1.0%ZPJ-3。新型复合降黏解堵增产体系性能评价结果表明:该体系与地层水具有良好的配伍性,对沥青质和有机垢具有良好的溶解能力;同时该体系还具有良好的缓蚀性能、助排性能、防膨性能及稠油降黏性能,且残渣含量低。模拟岩心驱替试验结果表明:新型复合降黏解堵增产体系不仅能够有效解除地层堵塞,还能进一步改善储层以满足稠油油藏解堵增产的目的。
Heavy oil reservoirs are characterized by high viscosity, high content of asphaltene and gum and poor fluidity. It is easy to cause serious reservoir damage in the production process, reduce the production of oil wells, and then affect the overall development effect of the oilfield. In view of the situation that a heavy oil reservoir in the offshore is liable to cause reservoir damage in the development process, the viscosity reducer, corrosion inhibitor and cleanup additive are optimized, and a new type of compound viscosity reduction, plugging removal and production increase system(w)suitable for heavy oil reservoirs is developed: 2.5% JNJ-1+2.5% JNJ-2+2.5% HYJS-3+3.0% NH_4HF_2+1.0% HSJ-3+1.0% ZPJ-3. The performance evaluation results show that the system has good compatibility with formation water and good solubility to asphaltene and organic scale. The system also has good corrosion inhibition performance, cleanup performance, anti-swelling performance and viscosity reduction performance of heavy oil, and low residue content. The simulation core displacement experiment results show that the new compound viscosity reduction, plugging removal and production increase system can not only effectively relieve formation plugging, but also further improve reservoir to meet the purpose of heavy oil reservoir plugging removal and production increase.
Heavy oil reservoirs are characterized by high viscosity, high content of asphaltene and gum and poor fluidity. It is easy to cause serious reservoir damage in the production process, reduce the production of oil wells, and then affect the overall development effect of the oilfield. In view of the situation that a heavy oil reservoir in the offshore is liable to cause reservoir damage in the development process, the viscosity reducer, corrosion inhibitor and cleanup additive are optimized, and a new type of compound viscosity reduction, plugging removal and production increase system(w)suitable for heavy oil reservoirs is developed: 2.5% JNJ-1+2.5% JNJ-2+2.5% HYJS-3+3.0% NH_4HF_2+1.0% HSJ-3+1.0% ZPJ-3. The performance evaluation results show that the system has good compatibility with formation water and good solubility to asphaltene and organic scale. The system also has good corrosion inhibition performance, cleanup performance, anti-swelling performance and viscosity reduction performance of heavy oil, and low residue content. The simulation core displacement experiment results show that the new compound viscosity reduction, plugging removal and production increase system can not only effectively relieve formation plugging, but also further improve reservoir to meet the purpose of heavy oil reservoir plugging removal and production increase.
引文
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[2] 马丽,许冬进,王亮,等.中深层稠油油藏开采工艺技术试验研究[J].合成化学,2016,32(12):20-22.
[3] 赵鹏,梅雷,曹骕骕,等.稠油油藏用防膨抑砂剂的研制与性能研究[J].石油化工应用,2017,36(3):125-128.
[4] 赵丽莎,吴小川,易晨曦,等.稠油开采技术现状及展望[J].辽宁化工,2013,42(4):363-368.
[5] 毕向明.稠油开采技术现状及展望[J].石化技术,2017,24(3):225.
[6] 贺皓楠,张志全,闫梦.聚表剂纳米催化剂驱油体系效果评估[J].当代化工,2017,46(12):2490-2492.
[7] 唐培槟,尚兴华,佘雪见.泾河油田稠油油藏脱水剂筛选与评价[J].辽宁化工,2016(6):827-829.
[8] 金庭浩,吴一慧,王健,等.聚表剂-纳米催化剂体系驱超稠油室内效果评价[J].能源化工,2018,39(3):67-70.
[9] 潘建华.高黏土含量低渗稠油油藏综合解堵技术研究与应用[J].钻采工艺,2012,35(5):97.
[10] 张明,刘光泽,程飞,等.SZ36-1油田稠油储层解堵酸化技术研究[J].非常规油气,2017,4(2):85-90.