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《Chinese Journal of Geophysics》 2013-08
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Nuclear Magnetic Resonance Logging-While-Drilling response at formation boundary

LI Xin1,2,XIAO Li-Zhi1*,HUANG Ke3,LIU Hua-Bing1,ZONG Fang-Rong1 1 State Key Laboratory of Petroleum Resource and Prospecting,China University of Petroleum, Beijing 102249,China 2 SINOPEC Research Institute of Petroleum Engineering,Beijing 100101,China 3 Reservoir Evaluation Center,CNPC Logging Ltd.,Xi′an 710021,China  
It is of significance to identify properties and boundaries of formation for NMR geosteering and in-situ reservoir evaluation.In this paper,a discretization method and NMR LWD response function are proposed based on drilling trajectory and sensitive-volume-unit contribution concept.Forward numerical modeling and inversion are employed to simulate NMR LWD logging response in different formation cases and factors,such as well deviation angles,formation boundary types,antenna apertures and target formation thicknesses.Quantitative relationships of these factors in certain condition are given here.Significant differences of T2 distributions and porosities can be found in comparison of NMR logging response between vertical wells and deviated wells.It shows that the bigger the deviated angle,the longer the apparent formation thickness and the longer the transitional interval in NMR response of formation boundary.Therefore,the depth of formation boundary cannot be extracted from initial point of transitional part of T2 distribution anymore.Vertical resolution is related to the length of antenna,borehole and tool's parameters.Besides that,an abnormal 'sandwich' may be reflected in thin target formation of logging response because of the existence of surroundings effects.These results provide suggestion to NMR LWD applications to improve real time formation identification.
【Fund】: 国家自然科学基金项目(41130417 41074102)资助
【CateGory Index】: P631.84
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【Citations】
Chinese Journal Full-text Database 3 Hits
1 LIU Shuang-Hui XIAO Li-Zhi~* HU Fa-Long XIE Ran-Hong YU Hui-Jun School of Resource and Information Technology,China University of Petroleum,Beijing Changping 102249,China;Studies on NMR logging responses at formation boundary[J];Chinese Journal of Geophysics;2008-04
2 LI Xin1,2,XIAO Lizhi1,2,LIU Huabing1,2(1.State Key Laboratory of Petroleum Resource and Prospecting,China University of Petroleum,Beijing 102249,China; 2.Key Laboratory of Earth Prospecting and Information Technology,Beijing 102249,China);Key Issues and Application Cases of NMR Logging While Drilling[J];Well Logging Technology;2011-03
3 LI Xin,XIAO Li-zhi,HU Hai-tao(State Key Laboratory of Petroleum Resource and Prospecting,China University of Petroleum,Beijing 102249,China);Characteristics of NMR Logging While Drilling Tools[J];Chinese Journal of Magnetic Resonance;2011-01
【Co-citations】
Chinese Journal Full-text Database 7 Hits
1 YU Huijun,XIAO Lizhi,V.Anferov,S.Anferova,ZHU Wanli,LI Xin(State Key Laboratory of Petroleum Resource and Prospecting,China University of Petroleum,Beijing 102249,China);Electronic Circuit Design of Gradient NMR Logging Tool[J];Well Logging Technology;2012-02
2 LI Hao~1 , LIU Shuang-lian~(1,2)(1. Exploration and Production Research Institute, SJNOPEC, Beijing 100083, China;2. China University of Petroleum , Beijing 102249, China);Geological characteristics study on logging information[J];Progress in Geophysics;2009-03
3 LI Yang,XIAO Li-zhi,SUN Hua-feng(State Key Laboratory of Petroleum Resource and Prospecting,China University of Petroleum, Beijing 102249,China);Analyses of Influencing Factors of Hydrocarbon Identification Using NMR Time Domain Analysis[J];Chinese Journal of Magnetic Resonance;2012-01
4 HUANG Ke,XIAO Li-zhi,LI Xin(State Key Laboratory of Petroleum Resource and Prospecting,China University of Petroleum, Beijing 102249,China);A Novel Method for NMR Ringing Reduction under Downhole Condition[J];Chinese Journal of Magnetic Resonance;2012-01
5 CHENG Jia-jie;XIAO Li-zhi;XU Wei;ZHANG Zong-fu;AN Tian-lin;DENG Feng;LIU Hua-bing;State Key Laboratory of Petroleum Resources and Prospecting,China University of Petroleum;;Simulating NMR Responses in Porous Media Based on Reconstructed Digital Rock Image[J];Chinese Journal of Magnetic Resonance;2013-03
6 XIAO Li-zhi;State Key Lab of Petroleum Resources and Prospecting,China University of Petroleum;;Design and implementation of NMR system in downhole extreme conditions[J];Journal of China University of Petroleum(Edition of Natural Science);2013-05
7 Li Xin 12 Xiao Li-Zhi 1 Liu Hua-Bing 1 Zhang Zong-Fu 1 Guo Bao-Xin 1 Yu Hui-Jun 1 Zong Fang-Rong 1 1 State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing 102249, China 2 Sinopec Research Institute of Petroleum Engineering, Beijing 100101, China;Optimization of nuclear magnetic resonance refocusing pulses to enhance signal intensity in gradient B_0 field[J];Acta Physica Sinica;2013-14
【Secondary Citations】
Chinese Journal Full-text Database 6 Hits
1 XIE Ran-hong,XIAO Li-zhi,DUNN Keh-jim,LIAO Guang-zhi,LIU Tian-ding(Lab of Petroleum Resources and Exploration,China University of Petroleum,Beijing 102249,China);Two-dimensional NMR Logging[J];Well Logging Technology;2005-05
2 HU Fa-Long1,2,XIAO Li-Zhi2(1.Research Institute of Petroleum Exploration and Development,Beijing 100083,China;2.China University of Petroleum,Beijng 102249,China);Numerical simulation of static magnetic filed distribution of NMR logging tools[J];Progress in Geophysics;2008-01
3 LIU Tang-Yan 1,2 XIAO Li-Zhi 3 FU Rong-Shan 1 WANG Zhong-Dong 4 1 School of Earth and Space Sciences University of Science and Technology of China, Hefei 230026, China 2 School of Ocean and Earth Science, Tongji University, Shanghai 200092, China 3 School of Resource and Information Technology, University of Petroleum, Beijing 102249, China 4 Logging Company of Liaohe Oil Field, Panjin 124000, China;APPLICATIONS AND CHARACTERIZATION OF NMR RELATION DERIVED FROM SPHERE-CAPILLARY MODEL[J];Chinese Journal of Geophysics;2004-04
4 HE Yu-Dan, MAO Zhi-Qiang, XIAO Li-Zhi, REN Xiao-Jun Faculty of Natural Resources and Information Technology,University of Petroleum, Beijing 102249, China;An improved method of using NMR T_2 distribution to evaluate pore size distribution[J];Chinese Journal of Geophysics;2005-02
5 HU Hai-tao,XIAO Li-zhi(State Key Laboratory of Petroleum Resource and Prospecting,China University of Petroleum,Beijing 102249,China);Investigation Characteristics of NMR Wireline Logging Tools[J];Chinese Journal of Magnetic Resonance;2010-04
6 Wang Caizhi and Shang Weizhong.Department of Postgraduate, Research Instiute of Petroleum Exploration and Development,CNPC,Beijing100083,China;Application of singular value decomposition (SVD) in solution of T_2 relaxation spectra from nuclear magnetic resonance (NMR) log data[J];Oil Geophysical Prospecting;2003-01