基于广义等效介质激电模型的有限长源频率域一维正演
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长江大学油气资源与勘探技术教育部重点实验室

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P631.322

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国家自然科学(U1562109)和国家重点研发计划重点专项(2016YFC0601104)和国家石油重大专项(2016ZX05004-003)的资助


1D forward modeling of CSEM based on GEMTIP model
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Key Laboratory of Exploration Technologies for Oil and Gas Resources of MOE, Yangtze University, Wuhan, Hubei,

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    摘要:

    为研究广义等效介质激电模型(GEMTIP模型)中的极化参数对有限长导线源的频率域响应的影响规律,本文首先介绍了GEMTIP模型,然后将模型引入到有限长导线源频率域测深一维正演中去,进而得到带激电信息的水平电场信号。本文重点研究了在层状介质条件下不同的极化参数对水平电场影响情况,通过分析发现体积占比对电场值的影响最大,在中高频处异常明显;其次是面积化系数,激电异常在低频处明显;相同极化参数所对应的三层地电模型有如下变化规律: Q 型模型的激电异常最大,反映极化层的能力最强,H型模型反映极化层的能力最差,A型和K型则位于两者之间。

    Abstract:

    In order to study the influence of polarization parameters on the frequency domain response of finite length source in generalized equivalent dielectric excitation model (GEMTIP model), this paper introduces the GEMTIP model first, then puts the model into FCSEM sounding 1D forward, and then get the information with electric field signal. In this paper, we study the influence of different model parameters on the horizontal electric field under the condition of layered media. The influence of the volume ratio on the electric field value is the most significant. The area coefficient is strongly reflected at the low frequency, and the polarization parameters are the same which at the three-layers geoelectric model has the following rules: the Q type model has the largest excitation frequency, the strongest ability to reflect the polarization layer, the H type model reflects the polarization layer the worst, A type and K type is located between them.

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引用本文

程见中,周磊. 基于广义等效介质激电模型的有限长源频率域一维正演[J]. 科学技术与工程, 2018, 18(13): .
CHENG Jianzhong and.1D forward modeling of CSEM based on GEMTIP model[J]. Science Technology and Engineering,2018,18(13).

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  • 收稿日期:2017-10-13
  • 最后修改日期:2017-12-28
  • 录用日期:2018-01-09
  • 在线发布日期: 2018-05-10
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