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鄂尔多斯盆地下寺湾油田长2储层高含水低稳产特征与主控因素研究

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袁广金, 邢芬, 高倩, 刘秉晞, 张舂燕, 贺志亮. 鄂尔多斯盆地下寺湾油田长2储层高含水低稳产特征与主控因素研究[J]. 西北地质, 2017, 50(4): 200-208.
引用本文: 袁广金, 邢芬, 高倩, 刘秉晞, 张舂燕, 贺志亮. 鄂尔多斯盆地下寺湾油田长2储层高含水低稳产特征与主控因素研究[J]. 西北地质, 2017, 50(4): 200-208.
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YUAN Guangjin, XING Fen, GAO Qian, LIU Bingxi, ZHANG Chongyan, HE Zhiliang. Characteristics and Main Controlling Factors of Chang 2 Reservoir with Low Stable Production and High Water Cut in the Xiasiwan Oilfield, Ardos Basin[J]. Northwestern Geology, 2017, 50(4): 200-208.
Citation: YUAN Guangjin, XING Fen, GAO Qian, LIU Bingxi, ZHANG Chongyan, HE Zhiliang. Characteristics and Main Controlling Factors of Chang 2 Reservoir with Low Stable Production and High Water Cut in the Xiasiwan Oilfield, Ardos Basin[J]. Northwestern Geology, 2017, 50(4): 200-208.
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鄂尔多斯盆地下寺湾油田长2储层高含水低稳产特征与主控因素研究

  • 1.

    陕西延长石油(集团)有限公司, 陕西 延安 716000;长安大学数字油田研究所, 陕西 西安 710054

  • 2.

    长安大学数字油田研究所, 陕西 西安 710054;长安大学地球科学与资源学院, 陕西 西安 710054

  • 3.

    长安大学数字油田研究所, 陕西 西安 710054;长安大学环境工程与水资源学院, 陕西 西安 710054

  • 基金项目: 延长股份有限公司勘探部“延长油田南部探区致密油藏体积压裂参数优化”项目（ycsy2016ky-A-01）

Characteristics and Main Controlling Factors of Chang 2 Reservoir with Low Stable Production and High Water Cut in the Xiasiwan Oilfield, Ardos Basin

  • 1.

    Shaanxi Yanchang Petroleum(Group) Co. Ltd., Yan'an 716000, Shaanxi, China;Digital Oilfield Institute, Chang'an University, Xi'an 710054, Shaanxi, China

  • 2.

    Digital Oilfield Institute, Chang'an University, Xi'an 710054, Shaanxi, China;School of Earth Sciences and Resources, Chang'an University, Xi'an 710054, Shaanxi, China

  • 3.

    Digital Oilfield Institute, Chang'an University, Xi'an 710054, Shaanxi, China;School of Environmental Engineering and Water Resources, Chang'an University, Xi'an 710054, Shaanxi, China

    摘要
  • 为什么在一个含水率高达90%的储层内，竟然产生了稳产长达30年的油藏?为追其原因，笔者结合含油气系统理论与系统科学方法，在大量地质调查的基础上，通过岩心常规薄片和铸体技术等分析与研究，揭示了长2储层高含水、低稳产的秘密。经过地质研究后认为下寺湾油田长2储层高含水的影响因素为：天然裂缝系统因素、孔隙度因素、渗透率因素、水动力封堵因素和地层水因素等5类，从而导致其储层高含水低稳产效应。根据相-势-源共控原理，虽然下寺湾油田近湖盆中心，但长2油源来自于长7，在沉积、构造上形成了"双子"主控因素，从而构建了稳定的供油机制等特征。在优相、低势、近源的共同作用下，造就了下寺湾地区长2储层高含水、低稳产特殊的油藏体系。
    This thesis has researched the reason why Chang 2 oil-bearing formation has high water cut (approximately 90%)but has the main producing layers for more than 30 years in Xiasiwan,which cause our curiosity and attention. On the basis of the theory of the petroleum geology, the reasons for the Chang 2 has high water cut and low stable production have been discovered by using the theory and method of the advanced petroleum system and system science method, carrying out the related geology investigations, analyzing and studying the conventional thin sheet and casting thin sheet technology. The results show that the Chang 2 high water cut reservoir in Xiasiwan Oilfield has five geological causes, including the natural fracture system cause, porosity cause, permeability causes, hydrocarbon closure cause and formation water cause.According to faces-potential-source coupling, the source of Chang 2 still comes from Chang 7.The Xiasiwan oilfield is near the heart of the lake, which caused the stable mechanism of oil supply and accompanied by the factors of sedimentary facies and structural characteristics.Thus, the special reservoir system of high water cut and low stable production in Chang 2 reservoir has been brought up, which has been controlled by the faces-potential-source coupling.
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出版历程
收稿日期:  2017-07-01
修回日期:  2017-08-18
刊出日期:  2017-12-15

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