钻遇大段泥岩水平井的完井技术对策
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摘要
针对渤海S油田沙河街组水平井穿层较多,整体水平段砂泥岩比例不稳定、交互较多,造成防砂管柱下入困难、盲管配管较多以及投产后筛管堵塞严重的问题。通过采用钻井尾管悬挂器替代防砂管柱中的顶部封隔器、管外机械封隔器封堵气层技术、分段开采及控水技术、简易防砂管柱开关滑套冲洗等完井技术,实现了防砂管柱顺利到位、机械液压式管外封隔器+密封筒进行分层生产/卡水、封堵气层等,有效保证了水平井产量。
The horizontal wells in Shahejie formation of Bohai S oilfield pass through large segment of sand-shale interbed, its sand-to-shale ratio is unstable and there is frequent interaction between sandstone and mudstone, which causes sand control screen into well dif-ficultly, more number of blind pipes and serious clogging of sand control screen after production. For these reasons, a series of technicalmeasures were taken to ensure the production of the horizontal wells, including to use tail pipe hanger instead of the packer at the topsand control screen, to use mechanical packers plugging gas layer, segmenting production and water control, to wash by using simplesand control pipe switch sliding sleeve, etc.
The horizontal wells in Shahejie formation of Bohai S oilfield pass through large segment of sand-shale interbed, its sand-to-shale ratio is unstable and there is frequent interaction between sandstone and mudstone, which causes sand control screen into well dif-ficultly, more number of blind pipes and serious clogging of sand control screen after production. For these reasons, a series of technicalmeasures were taken to ensure the production of the horizontal wells, including to use tail pipe hanger instead of the packer at the topsand control screen, to use mechanical packers plugging gas layer, segmenting production and water control, to wash by using simplesand control pipe switch sliding sleeve, etc.
引文
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[2]和鹏飞,孔志刚.Power Drive Xceed指向式旋转导向系统在渤海某油田的应用[J].探矿工程(岩土钻掘工程),2013,40(11):45-48,51.
[3]和鹏飞,侯冠中,朱培,等.海上Φ914.4mm井槽弃井再利用实现单筒双井技术[J].探矿工程(岩土钻掘工程),2016,43(3):45-48.
[4]徐荣强,邢洪宪,张仁勇,等.渤海湾边际油田水平井钻完井技术[J].石油钻采工艺,2008,30(2):53-56.
[5]李凡,王晓鹏,张海,等.渤海D油田WHPA平台大位移水平井钻修机钻井作业实践[J].中国海上油气,2012,24(2):50-53.
[6]朱培,和鹏飞,侯冠中,等.渤中某深井套管阻卡原因及应对措施分析[J].石油工业技术监督,2016,32(8):61-63.
[7]帅春岗,段永刚,冉林,等.水平井ICD控水方法研究[J].石油钻采工艺,2012,34(1):85-88.
[8]王超,张军杰,刘广燕.水平井分段控水完井试油技术[J].石油天然气学报,2010,32(6):446-449.
[9]李良川,肖国华,王金忠,等.冀东油田水平井分段控水配套技术[J].断块油气田,2010,17(6):655-658.