基于正交天线的随钻方位电磁波电阻率成像响应特征模拟

doi:10.7623/syxb201809010

石油学报 ›› 2018, Vol. 39 ›› Issue (9): 1063-1069.DOI: 10.7623/syxb201809010

基于正交天线的随钻方位电磁波电阻率成像响应特征模拟

杨震, 马清明, 杨宁宁, 崔海波, 李运升

中国石化胜利石油工程技术有限公司随钻测控技术中心山东东营 257064

收稿日期:2017-12-06 修回日期:2018-05-28 出版日期:2018-09-25 发布日期:2018-09-28
通讯作者: 杨震,男,1982年3月生,2004年获石油大学(华东)学士学位,2009年获中国石油大学(华东)博士学位,现为中国石化胜利石油工程有限公司随钻测控技术中心高级工程师,主要从事随钻电测井仪器方面的研究。Email:stingsyzh@126.com
作者简介:杨震,男,1982年3月生,2004年获石油大学(华东)学士学位,2009年获中国石油大学(华东)博士学位,现为中国石化胜利石油工程有限公司随钻测控技术中心高级工程师,主要从事随钻电测井仪器方面的研究。Email:stingsyzh@126.com
基金资助:
国家科技重大专项（2016ZX05022-006）和国家重点研发计划项目（2016YFC0302802）资助。

Imaging response characteristic simulation of azimuthal electromagnetic resistivity while drilling based on orthogonal antenna

Yang Zhen, Ma Qingming, Yang Ningning, Cui Haibo, Li Yunsheng

Technology Center of Measuring and Controlling While Drilling, Sinopec Shengli Oilfield Service Corporation, Shandong Dongying 257064, China

Received:2017-12-06 Revised:2018-05-28 Online:2018-09-25 Published:2018-09-28

摘要/Abstract

摘要：

随钻方位电磁波仪器由于具备地层方位分辨性及较大的边界探测深度在地质导向中应用广泛。在常规电磁波电阻率接收天线附近增加横向天线，组成一个正交接收天线，分别接收不同分量电磁场信号。将不同分量、不同线圈距电磁场信号进行归一化组合，利用数值模拟对不同地层模型以及井眼轨迹的成像特征和规律进行模拟分析。数值模拟结果表明，不同分量、不同线圈距的电磁场分量组合可以合成方位电磁波电阻率，方位电磁波电阻率探测深度主要由横向天线测量的定向电动势信号决定。方位电磁波电阻率成像受地层电阻率对比度、相对井斜角以及地层厚度影响，可以准确直观地反应出井眼与地层的相对位置关系以及地层电阻率各向异性。通过对基于正交天线的方位电磁波电阻率成像方法模拟，可以更好地解释横向电阻率变化并指导地质导向应用。

关键词: 正交天线, 方位电磁波, 成像, 井眼轨迹, 地质导向, 数值模拟

Abstract:

Azimuthal electromagnetic wave tool while drilling has been widely used in geosteering because of its formation azimuthal resolution ability and large boundary detection depth. Transverse antenna is added near the conventional electromagnetic receiving antennas to construct a new orthogonal antenna assembly used for receiving the electromagnetic signals of different components. The electromagnetic signals of different components and coil spacing are normalized; using numerical simulation, a simulated analysis is performed on the imaging characteristics and laws in different formation models and borehole trajectories. The numerical simulation results show that azimuthal electromagnetic resistivity can be synthesized by the electromagnetic component assemblages of different components and coil spacing, and its detection depth is mainly determined by oriented electromotive force signals of transverse antenna. The azimuthal electromagnetic resistivity imaging is influenced by formation resistivity contrast, relative hole deviation angle and horizon thickness, able to accurately and intuitively reflect the relative position relationship between well borehole and formation as well as formation resistivity anisotropy. The study of azimuthal resistivity imaging method based on orthogonal antenna can better interpret the transverse resistivity changes and guide geosteering application.

Key words: orthogonal antenna, azimuthal electromagnetic wave, imaging, well trajectory, geosteering, numerical simulation

中图分类号:

TE271

杨震, 马清明, 杨宁宁, 崔海波, 李运升. 基于正交天线的随钻方位电磁波电阻率成像响应特征模拟[J]. 石油学报, 2018, 39(9): 1063-1069.

Yang Zhen, Ma Qingming, Yang Ningning, Cui Haibo, Li Yunsheng. Imaging response characteristic simulation of azimuthal electromagnetic resistivity while drilling based on orthogonal antenna[J]. Acta Petrolei Sinica, 2018, 39(9): 1063-1069.

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基于正交天线的随钻方位电磁波电阻率成像响应特征模拟

Imaging response characteristic simulation of azimuthal electromagnetic resistivity while drilling based on orthogonal antenna

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