西南石油大学学报(自然科学版)

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渤中地区EWR – Phase 4 随钻测井异常响应特征

刘红岐1 *,刘建新2,代春明3,张雅茹4   

  1. 1.“油气藏地质及开发工程”国家重点实验室· 西南石油大学,四川成都610500;2. 中海油田服务股份有限公司,河北燕郊065201
    3. 中国石油吉林油田公司扶余采油厂,吉林松原138000;4. 西安长庆科技工程有限责任公司,陕西西安710018
  • 出版日期:2015-04-01 发布日期:2015-04-01
  • 通讯作者: 刘红岐,E-mail:lhqjp1@126.com
  • 基金资助:

    国家科技重大专项(2011ZX05030 – 005 – 03)。

Abnormal Characteristics of LWD Resistivity Curves of EWR – Phase 4
Instrument in Middle Bohai Area

Liu Hongqi1*, Liu Jianxin2, Dai Chunming3, Zhang Yaru4   

  1. 1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu,Sichuan 610500,China
    2. China Oilfield Services Ltd.,CNOOC,Yanjiao,Hebei,065201,China
    3. Fuyu Oil Production Plant,Jilin Oil Company,CNPC,Songyuan,Jinlin 138000,China
    4. Xi´an Changqing Technology Engineering Co. Ltd.,Xi´an,Shaanxi 710018,China
  • Online:2015-04-01 Published:2015-04-01

摘要:

结合井眼环境下随钻测井电磁场数值模拟计算的研究结果,分析了中浅电阻率和相位移深中浅电阻率这两大
类随钻电阻率曲线异常变化的主要特征和产生的原因。并以中海油渤中地区哈里伯顿公司EWR – Phase 4 随钻测井仪
器所测量的这两类电阻率曲线为例进行详细阐述。选取了3 口典型井的随钻幅度衰减和相位移电阻率曲线,通过对地
层岩性、渗透性、泥浆侵入,机械钻速、井眼环境等几个因素的分析,特别是对极浅、浅、中和深电阻率曲线的变化范围
和变化趋势等曲线特征进行了分析。研究认为,电阻率曲线异常主要表现为佐罗效应、“窗帘花边”效应和极化角突变
等几种主要类型,而引起这种异常变化的原因既有井眼或地层倾斜的影响,也有薄互层、非均质性、螺纹井眼以及钻铤
侧向震动等诸多方面的影响。

关键词: 随钻测井, EWR &ndash, Phase 4, 佐罗效应, 窗帘花边效应, 大斜度井

Abstract:

This paper mainly discussed the abnormal responses of amplitude attenuation resistivity and phase shift resistivity
detected by logging-while-drilling resistivity instruments in the borehole of large deviation and horizontal wells. Combining
with the simulation results of EMF of the LWD resistivity responding in borehole environment,the paperwe analysed the major
characteristics and reasons of abnormal corresponding of these two kinds of resistivity. And then,we listed the curves of the
LWD amplitude attenuation and phase shift resistivity of three typical wells of Bozhong area of CNOOC company,which were
logged by EWR-Phase 4 of Halliburton International company,The amplitude resistivity and phase shift resistivity of this three
wellsto illustrate a typical unusual changes in the curve morphology. With discussion on lithology of the formation,permeability
of reservoir,mud invasion,drilling velocity(ROP)and environment of borehole,the curves reading range and variation
trend are examined for the X-Shallow,shallow,mediate and deep resistivity. In the endFinally,the paperwe summarizes that
the abnormal corresponding types,such as Zorro effect,lace curtain effect and polarization angle effect,are most frequently
encountered in the high angle and horizontal wells logged by EWR – Phase 4 tools.

Key words: LWD;EWR &ndash, Phase 4;Zorro effect;lace curtain effect;large deviation well