Investigation Characteristics of NMR Wireline Logging Tools

Abstract

Abstract:

The magnetic field shape is critical to the performance of Nuclear Magnetic Resonance Well Logging tools. In order to understand and reconstruct the investigation characteristics of four international leading NMR tools, MRILP, CMR, MREx, and MR Scanner, their field distribution is simulated by Finite Elements Method(FEM). The influence of sensor configurations on field distribution is analyzed, and then sensor performance and influence factors are investigated. The results indicated that inhomogeneous field configurations are better than homogeneous field ones. Centric sensors have relatively simple geometries and high signal intensity, however, their measurements are sensitive to the mud, while eccentric ones have complicate geometries, low signal intensity, but they have various configurations and no restriction for mud type and salinity.

Key words: NMR logging tool, numerical simulation, field distribution, sensor design, influence analysis

CLC Number:

O482.53

HU Hai-Tao, XIAO Li-Zhi. Investigation Characteristics of NMR Wireline Logging Tools[J]. Chinese Journal of Magnetic Resonance, 2010, 27(4): 572-583.

References

[1] 肖立志. 核磁共振成像测井与岩石核磁共振及其应用[M]. 北京: 科学出版社, 1998.

[2] Coates G R, Xiao L, Prammer M G.NMR logging principles and applications[M]. Halliburton Energy Services, 1999.

[3] Xie Ran-hong(谢然红), Xiao Li-zhi(肖立志), Deng Ke-jun(邓克俊). NMR logging porosity activation and data processing method(核磁共振测井孔隙度观测模式与处理方法研究)[J]. Chinese Journal of Geophysics(地球物理学报), 2006, 49 (5): 1 567-1 572. 

[4] Xie R, Xiao L, Wang Z, et al. The influence factors of NMR logging porosity in complex fluid reservoir[J]. Science in China Series D: Earth Sciences, 2008, 51(Supp.II): 212-217.

[5] Wang X, Xiao L, Xie R, et al. Study of NMR porosity for terrestrial formation in China[J]. Science in China (Series G), 2006, 49(3): 313-320.

[6] Prammer M G, Bouton J, Drack E D, et al. A new multiband generation of NMR logging tools[C]. Society of Petroleum Engineers, 2001: SPE 69670.

[7] DePavia L, Heaton N, Ayers D, et al. A next generation wireline NMR logging tool[C]. Society of Petroleum Engineers, 2003: SPE 84482.

[8] Reiderman A, Beard D R. Side-looking NMR probe for oil well logging. U.S. 6580273[P]. 2003.

[9] Vinegar H S, Tutunjian P N, Chris Straley, et al. Field test of an experimental pulsed nuclear magnetism tool[C]. SPWLA 34th Annual Logging Symposium, 1993-GGG.

[10] Dunn K J, Bergman D J, Latorraca G A. Nuclear magnetic resonance: Petrophysical and logging applications[M]. Pergamon: Elsevier Science, 2002.

[11] Sun B, Dunn K J. Two-dimensional nuclear magnetic resonance petrophysics[J]. JMR, 2005, 23(2): 259-262.

[12] Xie Ran-hong(谢然红), Xiao Li-zhi(肖立志). The(T₂, D)- NMR logging method for fluids characterization((T₂, D)-二维核磁共振测井识别储层流体的方法)[J]. Chinese Journal of Geophysics(地球物理学报), 2009, 52(9): 2 410-2 418.

[13] Xie Ran-hong(谢然红), Xiao Li-zhi(肖立志), Liu Jia-jun(刘家军), et al. A method for multiple echo trains jointing inversion of NMR relaxation measurements(核磁共振多回波串联合反演方法)[J]. Chinese Journal of Geophysics(地球物理学报), 2009, 52(11): 2 913-2 919.

[14] Xiao L, Liao G, Xie R, et al. Inversion of NMR relaxation measurements in well logging[M]. Magnetic Resonance Microscopy. WILEY-VCH Verlag GmbH&Co. KGaA, Weinheim, 2009: 501-517.

[15] Prammer M G, Bouton J, Chandler R N, et al. A new multiband generation of NMR logging tools[C]. Society of Petroleum Engineers, 1998: SPE 49011.

[16] Mirth C C, Davies D, Mckeon D, et al. An improved NMR tool design for faster logging[C]. Transactions of the SPWLA 40th Annual Logging Symposium, 1999.

[17] Hu Fa-long(胡法龙), Xiao Li-zhi(肖立志). Numerical simulation of static magnetic filed distribution of NMR logging tools(核磁共振测井仪静磁场分布的数值模拟)[J]. Progress in Geophysics(地球物理学进展), 2008, 23(1): 173-177.

[18] www.halliburton.com/wireline.

[19] Brown R J S, Gamson B W. Nuclear magnetism logging[J]. Journal of Petroleum Technology, 1960, 12: 199-207.

[20] Jackson J A. Nuclear magnetic resonance logging[J]. The Log Analyst, 1984.

[21] Taicher Z, Shtrikman S, Paltiel Z, et al. Nuclear magnetic resonance sensing apparatus and techniques. U.S. 4717877[P]. 1988.

[22] Kleinberg R L, Griffin D D, Fukuhara M, et al. Borehole measurement of NMR characteristics of earth formations. U.S. 5055787[P]. 1991.

[23] Toufaily A K, Sezginer A, Jorion B, et al. Downhole NMR tool having a programmable pulse sequencer. U.S. 6400147[P]. 2000.

[24] Gupta R, Yoshion T, Satio Y. Finite element solution of permanent magnetic field[J], IEEE Trans Magn, 1990, 26(2): 383-386.

[25] 胡海涛, 肖立志. 核磁共振测井仪探头优化设计与验证[C]. 中国石油学会第十六届测井年会论文集, 2009.

[26] Miller M N, Paltiel Z, Gillen M E, et al. Spin echo magnetic resonance logging: Porosity and free fluid index determination[C]. SPE, 1990: SPE 20561.

[27] Kleinberg R L. NMR well logging at schlumberger[J]. Concepts in Magnetic Resonance, 2001, 13(6): 396-403.

[28] Sun Bo-qin(孙伯勤), Deng Ke-jun(邓克俊). Fast NMR CPMG data imersion using fluid component decompositions(核磁自旋回波串的液体分量分解快速反演法)[J]. Chinese J Magn Reson(波谱学杂志), 2010, 27(3): 298-309.

[29] Sun B, Mark S, Dunn K J. NMR T₂ inversion along the depth dimension[C]. AIP Conf Proc, 2009, 1081: 87-90.

[30] Sun B, Dunn K J. A global inversion method for multi-dimensional NMR logging[J]. JMR, 2005, 172(1): 152-160.

[31] Sun B, Dunn K J, Clinch S. Inversion along the depth dimension to enhance the continuity of multi-dimensional NMR logs[C]. Society of Petrophysicists and Well Log Analysts, 2010: YY.