杜66块火驱注气井耐高温泡沫调剖技术
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摘要
辽河油田杜66块为薄互层稠油油藏,经多周期蒸汽吞吐后转入多层火驱开发,因储层非均质性较强、蒸汽吞吐动用不均、空气超覆等原因,注入空气推进不均匀,纵向动用程度不足70%,井组各生产井尾气排量大,影响了开发效果。结合火驱开发特点及温场情况,优选了具有耐高温性能的泡沫调剖剂,其在300℃下阻力因子可达40,并优化了施工参数及施工工艺。现场试验表明,耐高温泡沫调剖技术可有效改善火驱注气井吸气剖面,缓解平面气窜。该工艺为多层火驱开发积累了宝贵经验,值得借鉴与推广。
Du 66 Block in Liaohe Oilfield is a thin interbedded heavy oil reservoir. It is developed by means of multi-layer combustion drive after multiple cycles' steam stimulation. Due to strong reservoir heterogeneity,nonuniform producing of steam stimulation and air overlapping,the injected air isn't advanced uniformly,the vertical producing degree is lower than 70%,tail gas discharge of production wells in the well group is high,and consequently the development effect is impacted. In this paper,the high-temperature foaming profile control agent was selected based on the development characteristics and temperature field of combustion drive. Its resistance factor under the temperature of 300℃ is up to 40. Then,the construction parameters and technologies were optimized. Field tests indicate that the high-temperature foaming profile control technology can improve the gas injection profile of combustion driven gas injectors and relieve the gas channeling in the plane. This technology accumulates the valuable experience for the development of multi-layer combustion drive,and it can be used as the reference and shall be popularized.
Du 66 Block in Liaohe Oilfield is a thin interbedded heavy oil reservoir. It is developed by means of multi-layer combustion drive after multiple cycles' steam stimulation. Due to strong reservoir heterogeneity,nonuniform producing of steam stimulation and air overlapping,the injected air isn't advanced uniformly,the vertical producing degree is lower than 70%,tail gas discharge of production wells in the well group is high,and consequently the development effect is impacted. In this paper,the high-temperature foaming profile control agent was selected based on the development characteristics and temperature field of combustion drive. Its resistance factor under the temperature of 300℃ is up to 40. Then,the construction parameters and technologies were optimized. Field tests indicate that the high-temperature foaming profile control technology can improve the gas injection profile of combustion driven gas injectors and relieve the gas channeling in the plane. This technology accumulates the valuable experience for the development of multi-layer combustion drive,and it can be used as the reference and shall be popularized.
引文
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[18]李爱芬,陈凯,赵琳,等.泡沫体系注入方式优化及可视化研究[J].西南石油大学学报(自然科学版),2011,26(5):49-52.
[19]程宏杰,顾鸿君,刁长军,等.注蒸汽开发后期稠油藏火驱高温燃烧特征[J].成都理工大学学报(自然科学版),2012,39(4):426-429.
[2]门福信.薄互层稠油油藏火驱开发动态调控技术研究[M].化工管理,2014,24(20):118.
[3]袁士宝,孙希勇,蒋海岩,等.火驱气体示踪剂性能评价及应用[J].科学技术与工程,2013,13(1):48-52.
[4]任红梅,付亚荣,陈燕.醇致盐沉积法调剖及提高采收率研究[J].油田化学,2001,18(3):246-250.
[5]曲占庆,吴婷,王丽,等.稠油火驱调剖暂堵机理实验研究[J].内蒙古石油化工,2011,38(22):154-156.
[6]张方礼,刘其成,赵庆辉,等.火烧油层燃烧反应数学模型研究[J].特种油气藏,2012,19(5):55-59.
[7]葸雷,彭朴,段启伟.以齐聚副产物制备耐高温泡沫剂[J].石油炼制与化工,2002,33(11):49-52.
[8]孙建峰,郭东红,辛浩川,等.JP系列高温泡沫剂的合成及性能评价[J].石油钻采工艺,2011,33(2):117-119.
[9]赖书敏,刘慧卿,庞占喜.高温氮气泡沫调驱发泡剂性能评价实验研究[J].科学技术与工程,2010,10(2):400-408.
[10]王琦,习海玲,左言军.泡沫性能评价方法及稳定性影响因素综述[J].化学工业与工程技术,2007,28(2):25-29.
[11]唐金库.泡沫稳定性影响因素及性能评价技术综述[J].舰船防化,2008,34(4):1-8.
[12]王力.氮气泡沫稳定性评价[J].石油地质与工程,2009,23(4):119-122.
[13]谢桂学,刘江涛,李军,等.低气液比泡沫驱的室内物理模拟研究[J].石油地质与工程,2011,25(5):115-120.
[14]杨浩.泡沫注入方式对封堵效果的影响[J].精细石油化工进展,2009,10(1):4-8.
[15]张彦庆,刘宇,钱昱.泡沫复合驱注入方式、段塞优化及矿场试验研究[J].大庆石油地质与开发,2001,20(1):46-48.
[16]刘露,李华斌,黄浩,等.渗透率及含油饱和度对泡沫性能的影响[J].西南石油大学学报(自然科学版),2015,37(6):133-137.
[17]郭东红,何羽薇,郑晓波.泡沫稳定剂增强泡沫稳定性的研究[J].应用科技,2009,17(7):13-18.
[18]李爱芬,陈凯,赵琳,等.泡沫体系注入方式优化及可视化研究[J].西南石油大学学报(自然科学版),2011,26(5):49-52.
[19]程宏杰,顾鸿君,刁长军,等.注蒸汽开发后期稠油藏火驱高温燃烧特征[J].成都理工大学学报(自然科学版),2012,39(4):426-429.