Application of wide field electromagnetic method in the fracturing monitoring of well Anye-2
HU Zhi-Fang1(), LUO Wei-Feng1, WANG Sheng-Jian1, KANG Hai-Xia1, ZHOU Hui1, ZHANG Yun-Xiao1, ZHAN Shao-Quan2()
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
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.
胡志方, 罗卫锋, 王胜建, 康海霞, 周惠, 张云枭, 詹少全. 广域电磁法在安页2井压裂监测应用探索[J]. 物探与化探, 2023, 47(3): 718-725.
HU Zhi-Fang, LUO Wei-Feng, WANG Sheng-Jian, KANG Hai-Xia, ZHOU Hui, ZHANG Yun-Xiao, ZHAN Shao-Quan. Application of wide field electromagnetic method in the fracturing monitoring of well Anye-2. Geophysical and Geochemical Exploration, 2023, 47(3): 718-725.
Zhan S Q, Ding M H, Li A Y, et al. The application of wide field electromagnetic sounding method to exploration in carbonatite mountain areas of Guizhou Province[J]. Geophysical and Geochemical Exploration, 2020, 44(1):88-92.
Zhan S Q, Li A Y, Wang D L, et al. A study of wide field electromagnetic method under extremely cold conditions[J]. Geophysical and Geochemical Exploration, 2020, 44(5):1019-1024.
Zhao F H, Wang D L, Zhang M P, et al. The comprehensive geophysical prediction technique of the bottom buried depth of Carboniferous-Permian in the northern Songliao Basin[J]. Mineral Resources and Geology, 2018, 32(1):116-121.
[5]
何继善. 广域电磁法和伪随机信号电法[M]. 北京: 高等教育出版社, 2010.
[5]
He J S. Wide field electromagnetic sounding methods and pseudo-random signal coding electrical method[M]. Beijing: Higher Education Press, 2010.
Wang Z G, Zhang L, Xu J H, et al. The use of time-frequency domain electromagnetic(TFEM) technique to monitor hydraulic fracturing[C]// Beijing: CPS/SEG Beijing 2018 International Geophysical Conference, 2018:1286-1290.
Liu Z X, Chang J X, Li X F, et al. Fracturing direction prediction based on fracturing monitoring of tight gas reservoir[J]. Natural Gas Geoscience, 2020, 31(6):846-854.
Gou P, Hu Z T, Jia J Y, et al. Application to the hydraulic fracture of well FT15 by real-time monitoring using vector processing for microseismic[J]. Progress in Geophysics, 2020, 35(4):1370-1378.
He Z X, Hu Z Z, Wang Z G, et al. Time frequency electro magnetic(TFEM) method:Data joint constrained inversion[J]. Oil Geophysical Prospecting, 2020, 55(4):898-905.
He Z X, Yang G S, Chen S Q, et al. Time frequency electro magnetic(TFEM) method:Data acquisition design[J]. Oil Geophysical Prospecting, 2019, 54(4):908-914.
He Z X, Chen Z C, Ren W J, et al. Time frequency electro magnetic(TFEM) method:Data acquisition system[J]. Oil Geophysical Prospecting, 2020, 55(5):1131-1138.
Li J P, Fan H B, Liu L, et al. Three dimensional shape inversion of multi parameter constrained magnetic body[J]. Oil Geophysical Prospecting, 2021, 56(2):407-418.
