Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Chinese Journal of Geophysics》 2015-01
Add to Favorite Get Latest Update

Borehole acoustic fields in porous formation with tilted thin fracture

YAN Shou-Guo;XIE Fu-Li;GONG Dan;ZHANG Cheng-Guang;ZHANG Bi-Xing;State Key Laboratory of Acoustics,Institute of Acoustics,Chinese Academy of Sciences;Key Laboratory of Exploration Technologies for Oil and Gas Resources,Ministry of Education,Yangtze University;  
As the improvement of global oil and gas exploration,the fractural reservoir becomes one of the most important objects.The fractures complicatedly influence the array waveforms of logging because of the diversity distribution of fracture zone,which causes the recognition and evaluation become one of the most difficult problems in acoustic logging.In this paper,we research the acoustic field of the borehole surrounded by aporous formation with tilt fractures by numerical simulation,and also investigate the characteristics of borehole fields in the formations with different fracture parameters.We numerically simulate the acoustic fields excited by a point source in the borehole surrounded by aporous formation with tilt fractures using the 3-D staggered grid stress-velocity finite difference method.We design a non-uniform grid finite difference method in order to satisfy the computation of thin fractures,the precision and speed of calculation are improved significantly.We process the fluid inside fractures through setting the parameters of constitutive functions as fluid limitation,which uniforms the difference equations on the fluid-porous media boundary and makes the computation more flexible.We investigate and compare many parameters influencing on the array waveforms,such as fracture width,fracture zone width,tilt angle and permeability.By the computations and analysis of borehole acoustic fields in different conditions,we can get conclusions as follows:1.The fractures barely influence body waves because the fracture width is much less than the acoustic wavelength,but the reflected shear wave and reflected Stoneley wave still could exist when Stoneley wave goes through the fracture.2.When the fractures are horizontal,only reflected Stoneley wave can be observed if the source is low frequency(2.5kHz),while the reflected shear wave and reflected Stoneley wave both exist if the source is high frequency(5kHz and above).The amplitude of reflected Stoneley wave decreases when the width of fracture reduces,though the amplitude of reflected shear wave is unchanged.The reflected shear wave still exists when the fracture width reduces to 20 m.3.The density and width of fracture zone significantly influence the amplitude of reflected waves.When the density is small,the reflected waves are weak due to the low density causes the small fractures′interaction;as the density increasing,the reflected waves get stronger.4.When the fracture cross the borehole and tilt,the reflected shear wave disappears,however the reflected Stoneley wave still exists,this is good for testing tilt fractures.5.The attenuation of Stoneley waves increases along with the permeability increases.This causes the amplitude of inflected Stoneley waves on the fracture boundary decreases,so the reflected Stoneley wave could not be observed when the fractures are long away from source.In this paper,3-D non-uniform grid finite difference method is used to numerically simulate the acoustic field of the borehole surrounded by aporous formation with fracture and fracture zone.The conclusions are obtained by calculation and analysis as follows:The inflected Stoneley wave on the fracture causes the existence of reflected shear wave and reflected Stoneley wave.The reflected Stoneley wave′s amplitude decreases with the decrease of the fracture width,however,the reflected shear wave is not sensitive to the fracture width changing,this is good for detecting the existence of a single thin horizontal fracture.The reflected Stoneley wave′s amplitude increases along with the fracture zone density and width increasing;when the fracture(fracture zone)tilt,the reflected shear wave disappears,but the reflected Stoneley wave is not sensitive to the change of fracture angle,this is good for detecting the existence of the tilted fracture zone.
【Fund】: 国家自然科学基金(11174322 41274141)资助
【CateGory Index】: P631.814
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
【Citations】
Chinese Journal Full-text Database 6 Hits
1 CHEN De-hua~1, CONG Jian-sheng~1, XU De-long~1, WANG Ying-wei~2, LI Wen-bin~3 ( 1. Geoscience College, Daqing Petroleum Institute, Daqing, Heilongjiang, 163318,China; 2. Oil Recovery Plant No.4, Daqing Oilfield Corp. Ltd, Daqing, Heilongjiang 163511,China; 3. Tuha Production and Technology Department, Well-logging Corp. Ltd., PetrolChina, Harmi, Xinjiang 838202, China);Simulation of the fracture formation acoustic field in boreholes[J];Journal of Daqing Petroleum Institute;2004-03
2 WANG XIUMING 1 ZHANG HAILAN 2 WANG DONG 2 1 CSIRO Petroleum PO BOX 1130, Technology Park Bentley, WA 6102 Australia 2 Institute of Acoustics, Beijing 100080, China;MODELLING OF SEISMIC WAVE PROPAGATION IN HETEROGENEOUS POROELASTICMEDIA USING A HIGH-ORDER STAGGERED FINITE-DIFFERENCE METHOD[J];Chinese Journal of Geophysics;2003-06
3 SUN Wei-Tao 1 YANG Hui-Zhu 2 1 Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China 2 Department of Computer Science & Technology, Tsinghua University, Beijing 100084,China;A 3-D FINITE DIFFERENCE METHOD USING IRREGULAR CRIDS FOR ELASTIC WAVE PROPAGATION IN ANISOTROPIC MEDIA[J];Chinese Journal of Geophysics;2004-02
4 LIN Wei-Jun~1, WANG Xiu-Ming~2, ZHANG Hai-Lan~11 Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080, China2 CSIRO Petroleum, ARRC, Bentley, WA 6102, Australia;Acoustic wave propagation in a borehole penetrating aninclined layered formation[J];Chinese Journal of Geophysics;2006-01
5 ZHANG Lu-Xin~(1,2,3),FU Li-Yun~(1,2),PEI Zheng-Lin~4 1 Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China 2 Key Laboratory of Earth's Deep Interior,Chinese Academy of Sciences,Beijing 100029,China 3 Graduate University of Chinese Academy of Sciences,Beijing 100049,China 4 CNPC Key Laboratory of Geophysical Exploration,China University of Petroleum-Beijing,Beijing 102249,China;Finite difference modeling of Biot's poroelastic equations with unsplit convolutional PML and rotated staggered grid[J];Chinese Journal of Geophysics;2010-10
6 YAN Shou-Guo,SONG Ruo-Long~*,L(?)Wei-Guo,MA Jun,WANG Ke-Xie College of Physics,Jilin University,Changchun 130012,China;Numerical simulation of acoustic fields excited by cross-dipole source in deviated wells in transversely isotropic formation[J];Chinese Journal of Geophysics;2011-09
【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 YIN Xue-ai,MA Guo-li(Department of Physics and Electronics,Binzhou University,Binzhou 256603,China);Finite Difference Method of the Elastic Wave Equation and Wave Field Simulation in Two-phase Isotropic Medium[J];Journal of Binzhou University;2011-03
2 CONG Jian-sheng1,2,QIAO Wen-xiao1(1.Resource and Information Institute,China University of Petroleum,Beijing 102249,China;2.Department of geophysics,Daqing Petroleum Institute,Daqing,Heilongjiang 163318,China);Simulated Response of Acoustic Log in Horizontal Borehole Placing on Interface of Two Formations[J];Well Logging Technology;2008-01
3 CONG Jian-sheng1,2,QIAO Wen-xiao1(1.School of Resources and Information,China Petroleum University,Beijing 102249,China;2.College of Earth Sciences,Daqing Petroleum Institute,Daqing,Heilongjiang 163318,China);Effect of borehole variations on borehole compensated sonic logging(BCSL) based on 2D finite-difference method(FDM)[J];Journal of Daqing Petroleum Institute;2008-01
4 SONG Yan-jie1,WANG Xue-ping1,2,HE Ying-wei3,GE Yan4,LI Hai-cheng5(1.College of Geosciences,Daqing Petroleum Institute,Daqing,Heilongjiang 163318,China;2.Exploration and Development Research Institute,Daqing Oilfield Corp.Ltd.,Daqing,Heilongjiang 163712,China;3.Oil Recovery Plant No.5,Daqing Oil field Corp.Ltd.,Daqing,Heilongjiang 163513,China;4.Oil Recovery Plant No.3,Daqing Oil Field Corp.Ltd.,Daqing,Heilongjiang 163000,China;5.Oil Recovery Engineering Institute,Daqing Oilfield Corp.Ltd.,Daqing,Heilongjiang 163453,China);Wave field separation method for Stoneley-wave of XMAC[J];Journal of Daqing Petroleum Institute;2008-05
5 NIU Bin-hua,SUN Chun-yan(China University of Geosciences, Beijing 100083, China);Developing theory of propagation of seismic waves——medium model and propagation of seismic waves[J];Progress In Geophysics;2004-02
6 WU Guo-chen 1, 2 , WANG Hua-zhong 1 (1. Laboratory of Marine Geology under Education Ministry, Tongji University, Shanghai 200092, China; 2. College of Earth Resource and Information, University of Petroleum, Dong Ying 257061, China);Analysis of numerical dispersion in wave-field simulation[J];Progress In Geophysics;2005-01
7 WANG Zhong-ren,CHEN Zu-bin,ZHANG Lin-hang,CHAI Zhi-yuan (College of Instrumentation and Electrical Engineering,Jilin Univ,Changchun 130026,China;(Key Lab of Geo-Exploration and Instrumentation(Jilin Univ),Ministry of Education,Changchun 130026,China);Numerical simulation for seismic response to nonlinear sweeping signal from a vibrator[J];Progress in Geophysics;2006-03
8 LI Jing-ye1,2,CHEN Xiao-hong3,RUI Zhen-hua3(1.Key Laboratory for Hydrocarbon Accumulation Mechanism,Ministry of Education,China Petroleum University,Beijing 102249,China;2.Basin & Reservoir Research Center in China Petroleum University,Beijing 102249,China;3.Key Lab of Geophysical Exploration of CNPC,China Petroleum University,Beijing 102249,China);Study on multiple attenuation method based on match filter[J];Progress in Geophysics;2007-01
9 FENG Ying-jie,YANG Chang-chun,WU Ping(Institute of Geology and Geophysics,Chinese Academy of sciences,Beijing 100029,China);The review of the finite-difference elastic wave motion modeling[J];Progress in Geophysics;2007-02
10 DU Xiang-dong1,LIU Jun-rong1,QI Yan-ping2,WU Guo-chen2,LIU Yi-ke3(1.CNOOC Research Center,Beijing 10027 China;2.College of Geo-resource and Information,China University of Petroleum,Dongying 257061,China;3.Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China);Finite difference high-order weighted-averaging operator for frequency-space domain qP wave in 3-D VTI media[J];Progress in Geophysics;2009-01
China Proceedings of conference Full-text Database 3 Hits
1 FENG Ying-jie,YANG Chang-chun,WU Ping (Institute of Geology and Geophysics,Chinese Academy of sciences,Beijing 100029,China);The review of the finite-difference elastic wave motion modeling[A];[C];2008
2 TENG Ji-wen (Institute of Geology and Geophysics,Chinese Academy of Science,Beijing 100029,China);Geophysics and geodynamics related to computational mathematics[A];[C];2011
3 CONG Jian-sheng~(1,2) QIAO Wen-xiao~1 (1 State Key Laboratory of Petroleum Resource and Prospecting (China University of Petroleum,Beijing),Beijing,102249,China;2 Department of geophysics,Daqing Petroleum Institute,Daqing,163318,China);Simulation analysis on sonic log for an inclined layer formation[A];[C];2008
【Secondary Citations】
Chinese Journal Full-text Database 10 Hits
1 Song Ruolong, Ma Jun, and Wang Kexie College of Physics, Jilin University, Changchun 130023, China.;The Application of the Nonsplitting Perfectly Matched Layer in Numerical Modeling of Wave Propagation in Poroelastic Media[J];应用地球物理(英文版);2005-04
2 Qin Zhen,Lu Minghui,Zheng Xiaodong,Yao Yao,Zhang Cai,and Song Jianyong 1.Research Institute of Petroleum Exploration & Development,Beijing 100083,China. 2.Institute of Geophysics & Geomatics,China University of Geosciences,Wuhan 430074,China. 3.Faculty of Resource & Information,China University of Petroleum,Beijing 102249,China.;The implementation of an improved NPML absorbing boundary condition in elastic wave modeling[J];应用地球物理(英文版);2009-02
3 Bian Ruixue, Dong Shaogui, Zhang Lipeng, et al ..;Relation Between Acoustic Amplitude and Fracture Properties.[J];WELL LOGGING TECHNOLOGY;1998-05
4 CONG Jian-sheng~1, CHEN De-hua~1, SONG Yan-jie~1, LU Jin-ling~2, YANG Da-jun~3 ( 1. Geoscience College, Daqing Petroleum Institute, Daqing, Heilongjiang, 163318,China; 2. Geological Institute of Lingpan Oil Recovery Plant, Linyi, Shandong, 251507,China; 3. Well-logging Company, Daqing Petroleum Administration Bureau, Daqing, Heilongjiang 163412,China );Finite-difference modeling of the acoustic field in the borehole in cylindrical coordinates[J];Journal of Daqing Petroleum Institute;2004-02
5 WANG XIU-MING(Daqing Petroleum Institute, Heilongjiang Anda 151400, China)ZHANG HAI-LAN;YING CHONG-FU(Institute of Acoustics , Academia Sinica, Beijing 100080, China);RESONANT MODES AND THEIR APPLICATION IN CALCULATION OF ACOUSTIC FIELDS OF BOREHOLES IN LAYERED MEDIA[J];Chinese Journal of Geophysics;1998-02
6 ZHANG JIAN-FENG(State Key Laboratory of Structural Analysis of Industrial Equipment,Dalian University of Technology, Dalian 116023, China);NON-ORTHOGONAL GRID FINITE-DIFFERENCE METHOD FOR NUMERICAL SIMULATION OF ELASTIC WAVE PROPAGATION[J];Chinese Journal of Geophysics;1998-S1
7 SHAO XIU-MIN LAN ZHI-LING (Institute of Mathematics, Chinese Academy of Sciences,Beijing 100080, China);FINITE ELEMENT METHODS FOR THE EQUATIONS OF WAVES IN FLUID-SATURATED POROUS MEDIA[J];Chinese Journal of Geophysics;2000-02
8 DONG LIANG-GUO;MA ZAI-TIAN;CAO JING-ZHONG;WANG HUA-ZHONG; GENG JIAN-HUA;LEI BING;XU SHI-YONG (Laboratory of Marine Geology of NDE, Tongji University, Shanghai 200092, China);A STAGGERED-GRID HIGH-ORDER DIFFERENCE METHOD OF ONE-ORDER ELASTIC WAVE EQUATION[J];Chinese Journal of Geophysics;2000-03
9 ZHAO Hai-Bo~1, WANG Xiu-Ming~ 1,2 , WANG Dong~1, CHEN Hao~11 Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080, China2 CSIRO Petroleum, ARRC, PO BOX 1130, Technology Park, Bentley, WA 6102 Australia;Applications of the boundary absorption using a perfectly matched layer for elastic wave simulation in poroelastic media[J];Chinese Journal of Geophysics;2007-02
10 FU LI-YUN;MOU YONG-GUANG(University of Petroleum, Beijing 100083);BOUNDARY ELEMENT METHOD FOR ELASTIC WAVE FORWARD MODELING[J];Chinese Journal of Geophysics;1994-04
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved