针对高台子X区块注聚井解堵剂配方研制
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摘要
针对大庆油田聚合物驱造成地层堵塞问题,采用室内物理模型实验,对注聚井进行解堵剂配方研制,筛选出适合的溶蚀剂、洗油剂和降解剂,并确定最佳浓度。实验结果表明;8%HCl+2%HF作为溶蚀剂、0.5%XY-J作为洗油剂和1%超稳氧化解聚剂0.3%BH_1作为降解剂;并通过岩心模拟实验评价其解堵效果明显,可作为现场实施配方,并具有指导意义。
Aiming at the blockage problems caused by polymer flooding in Gaotaizi block, through indoor physical model experiments, blockage remover formula for polymer injection wells was studied. Appropriate dissolution agent, oil displacement agent and degrading agent were screened out, and their optimum concentrations were determined. The experimental results showed that, appropriate dissolution agent was 8%HCl+2%HF, appropriate oil displacement agent was 0.5%XY-J, and appropriate degrading agent was 1% super-stable oxygen depolymerization agent 0.3%BH_1. The core simulation experiments proved that the plug removal effect was obvious, so the formula can be used in oilfields.
Aiming at the blockage problems caused by polymer flooding in Gaotaizi block, through indoor physical model experiments, blockage remover formula for polymer injection wells was studied. Appropriate dissolution agent, oil displacement agent and degrading agent were screened out, and their optimum concentrations were determined. The experimental results showed that, appropriate dissolution agent was 8%HCl+2%HF, appropriate oil displacement agent was 0.5%XY-J, and appropriate degrading agent was 1% super-stable oxygen depolymerization agent 0.3%BH_1. The core simulation experiments proved that the plug removal effect was obvious, so the formula can be used in oilfields.
引文
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[2]付美龙,熊帆.河南油田聚合物驱地层堵塞机理研究[J].钻采工艺,2009,32(04):77-79+109+120-121.
[3]安坤.注聚合物井新型解堵增注技术研究[D].西南石油大学,2014.
[4]苏景富,彭琼芳.百色油田油层溶蜡解堵处理[J].钻采工艺,1998(03):86+85.
[5]郑俊德,张英志,任华,刘野.注聚合物井堵塞机理分析及解堵剂研究[J].石油勘探与开发,2004(06):108-111.
[6]谭畅.杏十三区含聚污水回注井解堵技术研究[D].东北石油大学,2012.
[7]刘永刚.萨北油田注聚井强穿透长效解堵技术研究[D].东北石油大学,2011.
[8]陈渊,谢建军,赵长喜,王晓东,宋春红.聚合物驱细分复合解堵技术的研究与应用[J].特种油气藏,2004(05):101-104+126.
[9]王鑫,张志翔,单永卓.低渗透油田注水井解堵规模的探讨[J].大庆石油地质与开发,2004(03):70-71+93.