IDENTIFICATION OF IGNEOUS ROCK RESERVOIRS IN EASTERN DEPRESSION OF LIAOHE BASIN BY TIME-FREQUENCY ELECTROMAGNETIC METHOD

SHI Yan-ling; Liu Xue-jun; WEI Qiang; SUO Xiao-dong; DONG Wei-bin; HE Zhan-xiang

doi:10.13686/j.cnki.dzyzy.2024.01.006

2024 Vol. 33, No. 1

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Article navigation > Geology and Resources > 2024 > 33(1): 49-55

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SHI Yan-ling, Liu Xue-jun, WEI Qiang, SUO Xiao-dong, DONG Wei-bin, HE Zhan-xiang. IDENTIFICATION OF IGNEOUS ROCK RESERVOIRS IN EASTERN DEPRESSION OF LIAOHE BASIN BY TIME-FREQUENCY ELECTROMAGNETIC METHOD[J]. Geology and Resources, 2024, 33(1): 49-55. doi: 10.13686/j.cnki.dzyzy.2024.01.006

Citation:

SHI Yan-ling, Liu Xue-jun, WEI Qiang, SUO Xiao-dong, DONG Wei-bin, HE Zhan-xiang. IDENTIFICATION OF IGNEOUS ROCK RESERVOIRS IN EASTERN DEPRESSION OF LIAOHE BASIN BY TIME-FREQUENCY ELECTROMAGNETIC METHOD[J]. Geology and Resources, 2024, 33(1): 49-55. doi: 10.13686/j.cnki.dzyzy.2024.01.006

IDENTIFICATION OF IGNEOUS ROCK RESERVOIRS IN EASTERN DEPRESSION OF LIAOHE BASIN BY TIME-FREQUENCY ELECTROMAGNETIC METHOD

1.
Oriental Geophysics Company, PetroChina, Zhuozhou 072751, Hebei Province, China
2.
Center for Hydrogeology and Environmental Geology Survey, CGS, Baoding 071051, Hebei Province, China
3.
Department of Earth and Space Sciences, Southern University of Science and Technology, Shenzhen 518055, Guangdong Province, China

More Information

Corresponding author: HE Zhan-xiang, hezx@sustech.edu.cn

Received Date: 29 August 2022

Revised Date: 11 November 2022

Publish Date: 25 February 2024

Abstract

Abstract

Time-frequency electromagnetic method(TFEM), characterized by strong excitation signal, large detection depth and high precision, is one of the most promising techniques for the fine identification of igneous rock reservoirs and surface oil-gas detection, which can determine the oil-gas content by detecting the electrical and electrochemical anomalies of oil-gas reservoirs. Through analyzing the electrical logging data of HX sag in Liaohe Basin, it is confirmed that TFEM has the physical basis to identify different igneous rocks. The fault structure characteristics as well as the igneous rock inner structures of Shahejie Formation are obtained by the well seismic-TFEM joint inversion, and 5 stages of volcanic activities within the third member of Shahejie Formation are identified. A set of classification standard for polarizability evaluation is summarized through the extraction of amplitude and phase anomalies related to resistivity and polarizability, and comparison of oil production condition of the known wells. Combined with the seismic data, the oil-gas migration mechanism in HX sag is reversed by TFEM. The oil-gas evaluation template in the area is obtained through the research, by which several oil-gas favorable areas are identified and verified by subsequent drilling work. The method can provide reference for oil-gas evaluation in similar areas.
- TFEM /
- igneous rock reservoir /
- polarization anomaly /
- oil-gas detection /
- Liaohe Basin

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References

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