聚合物驱断东东块二类油层综合调整方法
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- 英文论文题名：Comprehensive adjustment method for secondary type of oil reservoir in the eastern part of Duandong Block by polymer flooding
- 论文作者：盛璐珊
- 英文论文作者：Sheng Lushan
- 年：2017
- 作者机构：大庆油田有限责任公司第一采油厂;
- 论文关键词：聚合物驱 ; 断东东块 ; 二类油层 ; 地质特点 ; 注入参数 ; 调整方法
- 英文论文关键词：polymer flooding ; eastern part of Duandong Block ; secondary type of oil reservoir ; geologic characteristic ; injection parameter ; adjust method
- 会议召开时间：2017-06-01
- 会议录名称：《采油工程文集》2017年第2辑
- 英文会议录名称：Oil Production Engineering
- 语种：中文
- 分类号：TE357.46
- 学会代码：DQGY
- 学会名称：大庆油田有限责任公司采油工程研究院
- 页数：6
- 文件大小：904k
- 原文格式：D
摘要
由于大庆油田北一区断东东二类油层动用程度低,根据该块二类油层与其他(即断东西块和北一二排西块)二类油层对比存在的差异和问题,提出了二类油层综合调整方法。针对注聚前期、注聚中期和注聚后期不同阶段的调整方法,对注入井加大了分注力度,并分别采取个性化注入参数调整、分层调整及提高注入速度,同时采出井采取堵压结合的措施,以保持井组注采平衡的调整方式来保证区块整体均衡开采,使区域间的压力系统、井组间聚合物用量保持整体平衡。结果表明,断东东块二类油层综合调整后,油层动用状况明显增加,连通井组含水上升速度由0.27%控制到0.1%,减缓了含水率回升速度,进而提高了聚合物驱的驱油效果。该项研究对其他二类油层的开发具有一定指导意义。
Due to the low producing degree for secondary type of oil reservoir in the eastern part of Duandong Block, the comprehensive adjustment method for the secondary type of oil reservoir has been put forward, according to the difference and problems existed in this block compared with other areas(the western part of Duandong Block and the western part of B1-2 Region). Different adjustment programs have been made in view of before, during and after polymer injection at different stages, including enhancing the separate layer injection, adopting personalized injection parameters adjustment, adjusting the separate layer and increasing injection rate. At the same time, the combination of plugging and fracturing was adopted in the production wells, so as to ensure the overall balanced production in the block through keeping the balance between injection and production in well groups and to keep the overall balance of the pressure system between regions and consumption of polymer between well groups.Research results showed that the producing degree of oil layers improved obviously after comprehensive adjustment for secondary type of oil reservoir in the eastern part of Duandong Block. The increasing rate of water cut has been controlled from 0. 27% to 0. 1% to lower the water cut recovery rate, which has improved the displacement effect of polymer flooding. The research has certain guiding significance for the development of other secondary type of oil reservoir.
Due to the low producing degree for secondary type of oil reservoir in the eastern part of Duandong Block, the comprehensive adjustment method for the secondary type of oil reservoir has been put forward, according to the difference and problems existed in this block compared with other areas(the western part of Duandong Block and the western part of B1-2 Region). Different adjustment programs have been made in view of before, during and after polymer injection at different stages, including enhancing the separate layer injection, adopting personalized injection parameters adjustment, adjusting the separate layer and increasing injection rate. At the same time, the combination of plugging and fracturing was adopted in the production wells, so as to ensure the overall balanced production in the block through keeping the balance between injection and production in well groups and to keep the overall balance of the pressure system between regions and consumption of polymer between well groups.Research results showed that the producing degree of oil layers improved obviously after comprehensive adjustment for secondary type of oil reservoir in the eastern part of Duandong Block. The increasing rate of water cut has been controlled from 0. 27% to 0. 1% to lower the water cut recovery rate, which has improved the displacement effect of polymer flooding. The research has certain guiding significance for the development of other secondary type of oil reservoir.
引文
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[3]刘振宇.油藏工程基础知识手册[M].北京:石油工业出版社,2002:120-126.
[4]孔维军.抽油机井高压蒸汽热洗清蜡效果试验研究[G]//大庆油田有限责任公司采油工程研究院.采油工程2013年第2辑.北京:石油工业出版社,2013:19-23.
[5]陈家琅.水力学[M].北京:石油工业出版社,1980:100-130.
[6]盛国富,苏瑞峰,宋茹娥,等.螺杆泵井合理沉没度及泵况控制图研究[R].采油工程,2005(2):32-35.
[7]汪凤军,温旭光,吴逸.重复压裂井选井选层及工艺优选[R].采油工程,2005(2):51-53.