Application of wide field electromagnetic method in the fracturing monitoring of well Anye-2

HU Zhi-Fang; LUO Wei-Feng; WANG Sheng-Jian; KANG Hai-Xia; ZHOU Hui; ZHANG Yun-Xiao; ZHAN Shao-Quan

doi:10.11720/wtyht.2023.1089

2023 Vol. 47, No. 3

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Article navigation > Geophysical and Geochemical Exploration > 2023 > 47(3): 718-725

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HU Zhi-Fang, LUO Wei-Feng, WANG Sheng-Jian, KANG Hai-Xia, ZHOU Hui, ZHANG Yun-Xiao, ZHAN Shao-Quan. 2023. Application of wide field electromagnetic method in the fracturing monitoring of well Anye-2. Geophysical and Geochemical Exploration, 47(3): 718-725. doi: 10.11720/wtyht.2023.1089

Citation:

HU Zhi-Fang, LUO Wei-Feng, WANG Sheng-Jian, KANG Hai-Xia, ZHOU Hui, ZHANG Yun-Xiao, ZHAN Shao-Quan. 2023. Application of wide field electromagnetic method in the fracturing monitoring of well Anye-2. Geophysical and Geochemical Exploration, 47(3): 718-725. doi: 10.11720/wtyht.2023.1089

Application of wide field electromagnetic method in the fracturing monitoring of well Anye-2

1. Oil and Gas Resources Survey,China Geological Survey,Beijing 100083,China;
2. No. 814 Geological Team of East China Non-ferrous Metals Geological Exploration Bureau of Jiangsu Province,Zhenjiang 212005,China

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Corresponding author: ZHAN Shao-Quan

Received Date: 21 March 2022

Revised Date: 03 January 2023

Publish Date: 05 July 2023

Abstract

Abstract

To evaluate the fracturing performance of two horizontal wells of well Anye-2,this study explored the layout of the fracturing monitoring network and data acquisition and processing using the fracturing monitoring technique combined with the wide field electromagnetic method.Through the qualitative and semi-quantitative difference analysis of the pre-,in-,and post-fracturing monitoring data,this study preliminarily determined the propagation direction of induced fractures and semi-quantitatively calculated the parameters such as fracture length and height.For each fracturing interval,the parameters such as fracture height and length were quantitatively determined through fine-scale inversion with depth as constraints and difference calculation.The fracturing monitoring results show that the fractures at two horizontal wells had lengths of 100~125 m and heights of 20~25 m.The fracturing production was guided by evaluating the fracturing performance of each fracturing interval.The fracturing results of the previous interval were used to guide the fracturing of the subsequent interval.Finally,the fracturing performance of all fracturing intervals was evaluated.The application results show that the wide field electromagnetic method can effectively predict the spread direction and range(e.g.,fracture length) of fracturing fluids,achieving encouraging performance.
- wide field electromagnetic method /
- well Anye-2 /
- fracturing monitoring