砂岩油藏水平井见水后增产措施确定方法

发布时间：2018-06-17 14:59

本文选题：水平井 + 见水诊断曲线　；参考：《特种油气藏》2017年02期

【摘要】：针对水平井见水后增产措施难以确定的问题,基于考虑重力作用的剖面压力均等模型和砂岩油藏储层渗透率对数正态分布特点,建立了一种砂岩油藏水平井见水诊断曲线。研究表明,该曲线反应了砂岩油藏水平井最为普遍的见水规律,能有效指导水平井见水后增产措施的选择。将研究成果应用于渤海J油田A41H井及A9H井,A41H井2014年1月实施堵水作业后,含水率下降到80%以下,日产油量约增加50m~3/d;A9H井2014年7月采取提液措施后,日产液量增加150 m~3/d,日产油量增加30 m~3/d。研究成果对砂岩油藏水平井见水后增产措施的确定有一定的指导意义。
[Abstract]:In order to solve the problem that it is difficult to determine the measures of increasing production after horizontal wells are exposed to water, based on the model of equal pressure in profile and the characteristics of lognormal distribution of reservoir permeability in sandstone reservoir, a water breakthrough diagnosis curve of horizontal well in sandstone reservoir is established. The study shows that the curve reflects the most common rule of water discovery in horizontal wells in sandstone reservoirs and can effectively guide the choice of production increase measures after water breakthrough in horizontal wells. The research results were applied to well A41H in Bohai J oilfield and well A41H in well A9H in January 2014. The water cut was reduced to below 80%, and the daily oil production increased by 50 m ~ (3) / d ~ (-1) A _ (9H) well in July 2014, after the measures were taken to extract the fluid from well A41H and well A _ (41H) of A _ 9H well. The amount of liquid per day increased by 150 mv / d, and the daily oil yield increased by 30 mm3 / d. The research results have certain guiding significance for determining the measures of increasing production after water breakthrough in horizontal well of sandstone reservoir.
【作者单位】：中海石油(中国)有限公司天津分公司;
【基金】：“十二五”国家科技重大专项“大型油气田及煤层气开发”子课题“海上油田丛式井网整体加密及综合调整油藏工程技术示范”(2011ZX05057-001)
【分类号】：TE343

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