Prof. Min Zhang Profile

Prof. Min Zhang

at Peking Univ

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Proceedings Article | 25 October 2017 Paper

Distributed acoustic sensing technique and its field trial in SAGD well

Li Han, Xiangge He, Yong Pan, Fei Liu, Duo Yi, Chengjun Hu, Min Zhang, Lijuan Gu

Proceedings Volume 10464, 104642K (2017) https://doi.org/10.1117/12.2285742

KEYWORDS: Acoustics, Heterodyning, Demodulation

Read Abstract +

Steam assisted gravity drainage (SAGD) is a very promising way for the development of heavy oil, extra heavy oil and tight oil reservoirs. Proper monitoring of the SAGD operations is essential to avoid operational issues and improve efficiency. Among all the monitoring techniques, micro-seismic monitoring and related interpretation method can give useful information about the steam chamber development and has been extensively studied. Distributed acoustic sensor (DAS) based on Rayleigh backscattering is a newly developed technique that can measure acoustic signal at all points along the sensing fiber. In this paper, we demonstrate a DAS system based on dual-pulse heterodyne demodulation technique and did field trial in SAGD well located in Xinjiang Oilfield, China. The field trail results validated the performance of the DAS system and indicated its applicability in steam-chamber monitoring and hydraulic monitoring.

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