福山油田流一段精细分层注水工艺技术研究
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摘要
福山油田流一段受油层埋藏深、井斜大、水质差、腐蚀结垢严重、层间矛盾突出等客观因素制约,常规分注技术存在投捞测配遇阻、测调效率不高、管柱有效期短等问题。优选出适用于不同油藏特征的同心双管、桥式偏心、桥式同心3种主要精细分注技术。对配套的封隔器洗井通道进行改进,可避免固相颗粒进入洗井通道,造成封隔器失效,提高了其在福山油田的技术适应性。同时对分注工艺管柱配套的水井双向锚的承载性能进行模拟计算,在管柱蠕动载荷作用下,水井双向锚轴向最大位移为0.02mm,能够满足工程要求。
For the reason that L1 segment of Fushan oilfield had great reservoir depth,high well deviation angle,poor water quality,serious scaling,corrosion and significant interlayer contradiction problems,the conventional stratified waterflooding technology often encountered some problems,such as blocking during fishing test,low measuring efficiency and short effective period of the pipes.The Concentric dual-barrel,bridge eccentric and bridge concentric three main injection technology were optimized for applying to different reservoir.In order to avoid channel blockage,the well flushing channel of packer was improved,so the technical adaptability of the packer was enhanced.The load performance of bidirectional anchor in the separate injection tubular was simulated,and the result showed that maximum axial displacement was 0.02 mm within creep load of tubular which could meet the engineering requirements.
For the reason that L1 segment of Fushan oilfield had great reservoir depth,high well deviation angle,poor water quality,serious scaling,corrosion and significant interlayer contradiction problems,the conventional stratified waterflooding technology often encountered some problems,such as blocking during fishing test,low measuring efficiency and short effective period of the pipes.The Concentric dual-barrel,bridge eccentric and bridge concentric three main injection technology were optimized for applying to different reservoir.In order to avoid channel blockage,the well flushing channel of packer was improved,so the technical adaptability of the packer was enhanced.The load performance of bidirectional anchor in the separate injection tubular was simulated,and the result showed that maximum axial displacement was 0.02 mm within creep load of tubular which could meet the engineering requirements.
引文
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[2]盖旭波,王兴伟,李占军,等.G6封隔器工作原理及应用[J].钻采工艺,2002,25(4):91-92.
[3]孙桂玲,关巍,窦守进,等.大港油田双通路偏心分注技术改进与试验[J].石油钻采工艺,2010,32(3):85-88.
[4]杨昌鑫,刘尊程,杨宝华,等.大港油田分层注水工艺技术[J].油气井测试,2011,20(1):65-69.
[5]盖旭波,刘扬,窦守进,等.大港油田分注难点技术研究与试验应用[J].价值工程,2012,(31):40-41.
[6]王金忠,肖国华,耿海涛,等.大斜度井多级分注工艺技术研究与应用[J].石油机械,2014,42(8):79-80.
[7]于九政,巨亚锋,郭方元.桥式同心分层注水工艺的研究与试验[J].石油钻采工艺,2015,37(5):92-94.
[8]李明军,马勇新,杨志兴.纵向渗透率级差对注水井吸水特征的影响[J].断块油气田,2013,20(2):210-211.
[9]熊国荣.文南油田油层吸水能力与储层物性关系研究[J].内蒙石油化工,2003,29(S1):38-40.
[10]王越之,罗春芝.油基钻井液对注水井吸水能力影响的室内评价[J].大庆石油地质与开发,2002,21(4):20-21.
[11]宋祖厂,盖旭波,刘扬,等.HRP液压封隔器性能参数数值模拟研究[J].石油机械,2011,39(5):41-44.