Research and Application of Array Dielectric Logging Tool

Zhiqiang Li, Xinghai Gui, Zhiqiang Yang, Chen Li, Junyi Li, Yongli Ji

2018

Abstract

Dielectric logging is an important tool in geophysical exploration. For formation with fresh water and where water salinity is unknown, it has good performance in distinguishing oil and water layers. This paper presents the calculation of electromagnetic field in layered medium by analytical formulas and by finite element method, and compares the accuracy of these two methods. The inversion charts, measurements’ depth and vertical resolution are researched. The responses of thin layers and thin interbed layers are also discussed. The designed array dielectric logging tool has been tested in practical wells. Research results show that the analytical formulas are fast and effective for calculating apparatus response of layered medium, and also for retrieving dielectric constant and resistivity. For the array dielectric logging tool, the depth of investigation is 10-25cm, and the vertical resolution is 4cm. The array dielectric logging tool has been tested in XX oil field. For freshwater formation with high resistivity, the measured dielectric constant is about 10 in oil layers, and the measured dielectric constant is about 20 in water layers. The device could distinguish oil and water layers obviously, which offer additional method for formation evaluation.

Paper Citation

in Harvard Style

Li Z., Gui X., Yang Z., Li C., Li J. and Ji Y. (2018). Research and Application of Array Dielectric Logging Tool.In Proceedings of the International Workshop on Environment and Geoscience - Volume 1: IWEG, ISBN 978-989-758-342-1, pages 406-414. DOI: 10.5220/0007431104060414

in Bibtex Style

@conference{iweg18,
author={Zhiqiang Li and Xinghai Gui and Zhiqiang Yang and Chen Li and Junyi Li and Yongli Ji},
title={Research and Application of Array Dielectric Logging Tool},
booktitle={Proceedings of the International Workshop on Environment and Geoscience - Volume 1: IWEG,},
year={2018},
pages={406-414},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0007431104060414},
isbn={978-989-758-342-1},
}

in EndNote Style

TY - CONF

JO - Proceedings of the International Workshop on Environment and Geoscience - Volume 1: IWEG,
TI - Research and Application of Array Dielectric Logging Tool
SN - 978-989-758-342-1
AU - Li Z.
AU - Gui X.
AU - Yang Z.
AU - Li C.
AU - Li J.
AU - Ji Y.
PY - 2018
SP - 406
EP - 414
DO - 10.5220/0007431104060414