石油学报 ›› 2005, Vol. 26 ›› Issue (4): 81-84.DOI: 10.7623/syxb200504017

• 油田开发 • 上一篇    下一篇

改进的PICKETT法在Y油田低阻油层识别中的应用

田中元1, 卞德智2, 陈昊3,4, 巨石5, 闫伟林6   

  1. 1. 中国石油勘探开发研究院 北京 100083;
    2. 中国石油天然气勘探开发公司海外研究中心 北京 100083;
    3. 中国科学院广州地球化学研究所 广东广州 510640;
    4. 中原油田分公司勘探开发研究院 河南濮阳 457001;
    5. 大庆油田有限责任公司生产测井分公司 黑龙江大庆 163412;
    6. 大庆油田有限责任公司勘探开发研究院 黑龙江大庆 163712
  • 收稿日期:2004-08-10 修回日期:2004-12-06 出版日期:2005-07-25 发布日期:2010-05-21
  • 作者简介:田中元,男,1965年8月生,2003年获中国石油勘探开发研究院油气田开发工程博士学位,现在中国石油勘探开发研究院做地质资源与地质工程博士后.E-mail:tianzy@petrochina.com.cn
  • 基金资助:
    中国石油天然气集团公司重点科技攻关项目(03B60201)“苏丹Melut盆地北部成藏条件研究与有利目标评价”部分成果.

Application of improved PICKETT method to identification of low-resistivity pays in Y Oilfield

TIAN Zhong-yuan1, BIAN De-zhi2, CHEN Hao3,4, JU Shi5, YAN Wei-lin6   

  1. 1. Research Institute of Petroleum Exploration and Development, CNPC, Beijing 100083, China;
    2. Abroad Research Center, China National Oil and Gas Exploration and Development Corporation, Beijing 100083, China;
    3. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China;
    4. Petroleum Exploration and Production Institute, Zhongyuan Oilfield, Sinopec, Puyang 457001, China;
    5. Logging and Testing Services Co., Daqing Oilfield Co. Ltd, Daqing 163412, China;
    6. Research Institute of Petroleum Exploration and Development, Daqing Oilfield Co.Ltd, Daqing 163712, China
  • Received:2004-08-10 Revised:2004-12-06 Online:2005-07-25 Published:2010-05-21

摘要: 对Y油田低阻油层岩心资料(孔隙度,渗透率,颗粒密度,毛管压力曲线,电性参数,相对渗透率实验,薄片分析,X衍射,扫描电镜,粘土矿物)、录井、测井以及试油资料的分析结果表明,低阻油层的主要影响因素包括:①复杂的孔隙结构,尤其是微孔隙较发育,导致了高的束缚水饱和度;②粘土含量高,粘土矿物(高岭石,伊利石)吸附了大量的束缚水,导致了含水饱和度的增高;③粘土矿物的附加导电性(高Qv值);④咸水钻井泥浆条件下泥浆滤液的侵入.PICKETT法可用于储层评价,主要是根据测井资料和岩心资料建立深探测电阻率与孔隙度的交会图.将改进的PICKETT法用于识别Y油田低阻油层,是在原方法的基础上,通过毛细管压力曲线将自由水界面之上的高度集成到PICKETT图中,取得了满意的效果.

关键词: 低阻油层, 识别方法, 改进的PICKETT法, 测井响应, 孔隙度, 电阻率

Abstract: The analyses of core data (such as porosity,permeability,capillary pressure curve,electrical parameters,relative permeability,thin section,clay mineral),logging,well logs and well testing for low-resistivity pays in Y Oilfield show that the low-resistivity pays are mainly caused by some factors including ① complicated porous structure,especially high irreducible water saturation in micro-porosity system;② high volume clay minerals (kaolinite and illite) adsorbing abundance of irreducible water; ③ high cation exchange capacity;④ deeper invasion of saline mud filtrate.PICKETT method is mainly based on cross-plot of deep laterolog and porosity from well logs and core data.The height of free water level of pay was introduced into the initial PICKETT method to improve the PICKETT method.The improved method has been successively applied to identify the low-resistivity pay in Y Oilfield.

Key words: low-resistivity pay, identification method, improved PICKETT method, well log response, porosity, resistivity

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