海上岩性油藏自源闭式注水技术矿场实践
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摘要
针对珠江口盆地海上岩性油藏因地层能量不足、平台空间受限布置地面人工注水设备困难的问题,研究了一种利用近源配伍性良好的天然含水砂层在地下完成人工注水补充油藏压力的自源闭式注水技术。开展了自源水层筛选、自源水配伍性及注水水质指标、自源注水注采能力、多功能注水管柱、转向分流技术、注入水前缘监测等关键技术研究,并进行了现场井组注水试验,结果表明自源闭式注水技术可有效实现海上岩性油藏地层能量补充,可为类似海上油田人工注水开发调整提供借鉴。
According to the reservoir pressure declining of lithologic reservoir and the limited space for settling water injection device on platform in Pearl River Mouth Basin,one proximal down-hole water injection technique is developed to make up formation pressure by utilizing sufficient energy from nearby water zone owing to proximal characteristic and good compatibility.Well group water-injecting field test was conducted based on proximal water zone candidate selecting,proximal water compatibility and water injecting quality index study,well group injection-production capability estimate,multifunctional injection string design,inverse diverting flow technology and injected water front monitoring method.This technology was proved to effectively make up formation pressure for offshore lithologic reservoir.It provides a reference to similar offshore oilfields in artificial water injection and adjustment.
According to the reservoir pressure declining of lithologic reservoir and the limited space for settling water injection device on platform in Pearl River Mouth Basin,one proximal down-hole water injection technique is developed to make up formation pressure by utilizing sufficient energy from nearby water zone owing to proximal characteristic and good compatibility.Well group water-injecting field test was conducted based on proximal water zone candidate selecting,proximal water compatibility and water injecting quality index study,well group injection-production capability estimate,multifunctional injection string design,inverse diverting flow technology and injected water front monitoring method.This technology was proved to effectively make up formation pressure for offshore lithologic reservoir.It provides a reference to similar offshore oilfields in artificial water injection and adjustment.
引文
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[11]徐程宇,王珊,王玲,等.井间微量物质示踪剂技术在塔里木盆地超深超薄油藏的应用[C]∥陕西省石油学会.2016油气田勘探与开发国际会议(2016IFEDC)论文集.西安:西安石油大学,陕西省石油学会,2016:225-232.
[2]黄映仕,余国达,罗东红,等.惠州25-3油田薄层油藏自流注水开发试验[J].中国海上油气,2015,27(6):74-79.DOI:10.11935/j.issn.1673-1506.2015.06.013.HUANG Yingshi,YU Guoda,LUO Donghong,et al.Dump flooding experiment in thin layer reservoir development in HZ25-3oilfield[J].China Offshore Oil and Gas,2015,27(6):74-79.DOI:10.11935/j.issn.1673-1506.2015.06.013.
[3]田虓丰,程林松,薛永超,等.致密油藏液测应力敏感特征及微观作用机理[J].中国海上油气,2015,27(2):63-67.DOI:10.11935/j.issn.1673-1506.2015.02.011.TIAN Xiaofeng,CHENG Linsong,XUE Yongchao,et al.Characteristics and micro-mechanism of stress sensitivity by using liquid measurement method in tight oil reservoirs[J].China Offshore Oil and Gas,2015,27(2):63-67.DOI:10.11935/j.issn.1673-1506.2015.02.011.
[4]国家能源局.SY/T 5329—2012海上碎屑岩油藏注水水质指标及分析方法[S].北京:石油工业出版社,2012.
[5]叶珏男,唐洪明,吴小刚,等.储层孔喉结构参数与悬浮物粒径匹配关系[J].油气地质与采收率,2009,16(6):92-94,116.YE Juenan,TANG Hongming,WU Xiaogang,et al.The matching relation between the pore throat parameters of reservoirs and the particle diameters of suspended particals[J].Petroleum Geology and Recovery Efficiency,2009,16(6):92-94,116.
[6]袁淋,李晓平,张璐,等.水平井稳态产能公式对比与分析[J].岩性油气藏,2013,25(6):127-132.YUAN Lin,LI Xiaoping,ZHANG Lu,et al.Analysis and correlation of steady-state productivity formulas for horizontal wells[J].Lithologic Reservoirs,2013,25(6):127-132.
[7]王陶,朱卫红,杨胜来,等.用相对渗透率曲线建立水平井采液、吸水指数经验公式[J].新疆石油地质,2009,30(2):235-237.WANG Tao,ZHU Weihong,YANG Shenglai,et al.Application of relative permeability curves to establishment of empirical formulas for fluid productivity index and injectivity index of horizontal well[J].Xinjiang Petroleum Geology,2009,30(2):235-237.
[8]杨万有,王立苹,张凤辉,等.海上油田分层注水井电缆永置智能测调新技术[J].中国海上油气,2015,27(3):91-95.DOI:10.11935/j.issn.1673-1506.2015.03.014.YANG Wanyou,WANG Liping,ZHANG Fenghui,et al.A new intelligent testing and adjustment process with implanted cables for zonal water injection wells in offshore oilfields[J].China Offshore Oil and Gas,2015,27(3):91-95.DOI:10.11935/j.issn.1673-1506.2015.03.014.
[9]程心平,刘敏,罗昌华,等.海上油田同井注采技术开发与应用[J].石油矿场机械,2010,39(10):82-87.CHENG Xinping,LIU Min,LUO Changhua,et al.Development and application of single well integral injection/production technique[J].Oil Field Equipment,2010,39(10):82-87.
[10]宋吉水,王岩楼,廖广志,等.井间示踪技术[M].北京:石油工业出版社,2003:3-4.
[11]徐程宇,王珊,王玲,等.井间微量物质示踪剂技术在塔里木盆地超深超薄油藏的应用[C]∥陕西省石油学会.2016油气田勘探与开发国际会议(2016IFEDC)论文集.西安:西安石油大学,陕西省石油学会,2016:225-232.
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