天然气地球科学

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杭锦旗地区低阻气层成因及测井评价方法

彭真,秦臻,潘和平,纪扬,郭博,徐伟,孙立洲   

  1. 1.中国地质大学(武汉)地球物理与空间信息学院,湖北 武汉 430074;
    2.中国石化华北石油工程有限公司测井分公司,河南 新乡 453700;
    3.深圳市公路交通工程试验检测中心,广东 深圳 518000
  • 收稿日期:2016-04-26 修回日期:2016-08-20 出版日期:2016-11-10 发布日期:2016-11-10
  • 通讯作者: 潘和平(1953-),男,湖北鄂州人,教授,博士生导师,主要从事测井与井中物探的教学和科研工作. E-mail:panpinge@163.com.
  • 作者简介:彭真(1977-),男,河南信阳人,高级工程师,博士在读,主要从事石油测井方法与解释研究. E-mail:hbcjpz@163.com.
  • 基金资助:

    自然科学基金(编号:41074086);华北局“杭锦旗地区十里加汗区块上古生界储层测井评价方法研究”项目联合资助.

Low-resistivity gas reservoir genesis and log evaluation method in Hangjinqi area

Peng Zhen,Qin Zhen,Pan He-ping,Ji Yang,Guo Bo,Xu Wei,Sun Li-zhou   

  1. 1.Institute of Geophysics & Geomatrics,China University of Geosciences,Wuhan 430074,China;
    2.Logging Company of China Petrochemical Corporation North China Petroleum Bureau,Xinxiang 453700,China;
    3.Shenzhen Traffic Construction Engineering Test & Detection Center,Shenzhen 518000,China
  • Received:2016-04-26 Revised:2016-08-20 Online:2016-11-10 Published:2016-11-10

摘要:

杭锦旗地区上古生界的勘探和生产资料证实该区发育较多低阻气层,但低阻成因目前尚不明确,给该区低阻气层的流体识别和测井评价,尤其是含水饱和度的计算带来较大困难。为此,利用分析化验资料和测井资料,分析并总结出该区低阻气层的成因为黏土矿物附加导电、微孔隙发育和地层水矿化度的影响;并基于该区低阻成因,总结了影响地层水导电性能的3类导电流体,即泥质(束缚水)、微孔隙导电流体(毛细管水)和大孔隙导电流体(自由水),建立了改进的“双水模型”及相关参数估算方案来计算低阻气层的饱和度。实际应用结果表明,该方法在杭锦旗地区低阻气层的测井解释评价中效果良好,与测试结果符合较好;可为低阻气层测井评价提供一种技术方案。

关键词: 杭锦旗, 低阻气层, 成因, 饱和度模型, 测井评价

Abstract:

The exploration and production data in Hangjinqi area confirmed that there are many low-resistivity gas reservoirs.However,the genesis of low-resistivity is not clear,this situation affects the fluid identification and log evaluation,especially the calculation of water saturation.Thus,by using the laboratory measurements and well logs,genesis of the low-resistivity is analyzed and summarized as three reasons.They are additional conductivity of clay mineral,micro-pore development and the influence of formation water salinity.By using the “core scale logging” method,the conventional log calculation models of reserve parameters are established.Based on the genesis of low-resistivity gas reservoir,three conductive fluids,which can affect the electrical conductivity of formation water,are summarized such as shale (the bound water),micro-pore conductive fluid (the capillary water) and macro-pore conductive fluid (the free water).Therefore,the improved “dual-water saturation model” and the estimation solutions of the corresponding parameters are proposed to calculate the saturation in low-resistivity gas reservoir.Field examples confirmed that,by using the method,the reliable evaluation results,which matched well with the test results,can be obtained in the low-resistivity gas reservoir in Hangjinqi area.It can provide a technology solutions for log evaluation in low-resistivity gas reservoir.

Key words: Hangjinqi, Low-resistivity gas reservoir, Genesis, Saturation model, Log evaluation

中图分类号: 

  • TE133.1

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