Rapid T1–T2 Measurement Using Drive Equilibrium Pulse Sequence
- Authors: Chen W.1, Xiao L.1, Zhang Y.1, Liao G.1, Du Q.1, Luo S.1, Sun Z.1
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Affiliations:
- State Key Laboratory of Petroleum Resources and Prospecting, College of Geophysics and Information Engineering, China University of Petroleum
- Issue: Vol 47, No 10 (2016)
- Pages: 1159-1169
- Section: Original Paper
- URL: https://journals.rcsi.science/0937-9347/article/view/247566
- DOI: https://doi.org/10.1007/s00723-016-0824-2
- ID: 247566
Cite item
Abstract
In the last decade, multidimensional Laplace nuclear magnetic resonance (NMR) was widely used in laboratory and oil industry. Compared to one-dimensional NMR, multidimensional NMR measurements have advantages in fluid recognition and content calculation, etc. However, the applications are limited due to its long measurement time. The paper presents a rapid T1–T2 measurement pulse sequence—drive equilibrium (DE) pulse sequence which can obtain fluid T1–T2 distribution down to two one-dimensional measurements and the obtained correlation maps are in good consistency with the results by traditional T1 encoding pulse sequence. It is found that the performance of DE pulse sequence is related to measurement times. If we add measurement times, DE pulse sequence will work better. The sequence can be used in time limit experiments, like downhole fluid analysis and online reaction monitoring.
About the authors
Weiliang Chen
State Key Laboratory of Petroleum Resources and Prospecting, College of Geophysics and Information Engineering, China University of Petroleum
Email: xiaolizhi@cup.edu.cn
China, 18 Fuxue Road, Changping, Beijing, 102249
Lizhi Xiao
State Key Laboratory of Petroleum Resources and Prospecting, College of Geophysics and Information Engineering, China University of Petroleum
Author for correspondence.
Email: xiaolizhi@cup.edu.cn
China, 18 Fuxue Road, Changping, Beijing, 102249
Yan Zhang
State Key Laboratory of Petroleum Resources and Prospecting, College of Geophysics and Information Engineering, China University of Petroleum
Email: xiaolizhi@cup.edu.cn
China, 18 Fuxue Road, Changping, Beijing, 102249
Guangzhi Liao
State Key Laboratory of Petroleum Resources and Prospecting, College of Geophysics and Information Engineering, China University of Petroleum
Email: xiaolizhi@cup.edu.cn
China, 18 Fuxue Road, Changping, Beijing, 102249
Qunjie Du
State Key Laboratory of Petroleum Resources and Prospecting, College of Geophysics and Information Engineering, China University of Petroleum
Email: xiaolizhi@cup.edu.cn
China, 18 Fuxue Road, Changping, Beijing, 102249
Sihui Luo
State Key Laboratory of Petroleum Resources and Prospecting, College of Geophysics and Information Engineering, China University of Petroleum
Email: xiaolizhi@cup.edu.cn
China, 18 Fuxue Road, Changping, Beijing, 102249
Zhe Sun
State Key Laboratory of Petroleum Resources and Prospecting, College of Geophysics and Information Engineering, China University of Petroleum
Email: xiaolizhi@cup.edu.cn
China, 18 Fuxue Road, Changping, Beijing, 102249