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

Finite element studies on characterization of near wellbore fractures using the wireline formation tester

DI De-Jia;TAO Guo;ZHANG Tong-Yi;MAO Jun;WANG Bing;SINOPEC Research Institute of Petroleum Engineering;State Key Laboratory of Petroleum Resource and Prospecting,China University of Petroleum;The Petroleum Institute;  
Fractures play an important role in both reservoir fluid flow and well productivity.Fracture conductivity is an important parameter to evaluate the fractured reservoir.It is difficult to evaluate the fracture conductivity with conventional prospecting methods.The wireline formation tester has been applied to evaluate the fracture conductivity near wellbore.The effects of evaluating the fractures crossed and non-crossed well borehole with the method of interval pressure transient tests and harmonic pulse testing are analyzed.In order to research the effects that evaluate the fractures in the reservoir with the wireline formation tester,we used the finite element method to simulate the pressure response of fractured reservoirs with the interval pressure transient tests and harmonic pulse testing.At first,we simulated the pressure response of different fracture parameters with interval pressure transient tests and analyzed the different effects of evaluating the fractures crossed and non-crossed well borehole.Then we analyzed the feasibility of evaluating the fractures non-crossed well borehole with the harmonic pulse testing.The pressure response of different pulse frequencies and different dual probe spacing were simulated and the simulation results of different fracture parameters were compared and analyzed.In order to investigate the effect of the fracture conductivity on the interval test behavior,at first,we changed the fracture conductivity in the range from 1×10-15 m3,1×10-14 m3,1×10-13m3 to 5×10-13 m3.The simulation results indicate that pressure drawdown is faster and buildup occurs slower as the fracture conductivity decreases.The pressure differential and MDH curves of different fracture conductivity values can be distinguished easily from a pressure gauge.It presents that the fracture conductivity can be evaluated by the interval pressure transient tests efficiently.In the second case,the fractures do not intersect with the well borehole.The fracture conductivity-17 varies from 1×10 m3,1×10-15 m3,1×10-14 m3 to 1×10-12 m3.The simulation results show that pressure responses have a small change when the fracture conductivity is varied.Although the values of different pressure differentials can be distinguished by aquartz gauge,the effect on pressure response is negligible.Then we used Harmonic pulse testing to evaluate non-crossed fractures.At first,the pulse frequency was defined as 0.1Hz,the spacing of dual probe was defined as 20 cm.From the simulation results,there is a certain pressure differential and phase shift between the fractured reservoir and non-fractured reservoir.In addition,the pressure differential and phase shift can be distinguished between different fractures conductivity values.When the spacing of the dual probe was equal to 50 cm,there is evident amplitude differential and phase shift between fractured formation and non-fractured formation.Thus it indicates the long spacing of dual probe can detect those fractures near the well borehole more efficiently.Finally,we simulated the pressure response for different radial depths of fractures near well borehole,for which the pulse frequency was defined as 0.1Hz and the spacing of the dual probe was 50 cm.According to the simulation results,the method of harmonic pulse testing can detect the fractures near the well borehole efficiently.However,it becomes more difficult and probably invalid for detecting those fractures located far away from the well borehole.The fractures intersecting the well borehole can be evaluated efficiently by interval pressure transient tests depending on fracture conductivities.Non-intersecting fractures in the vicinity of the well borehole have negligible effects with the method. However, when the fracture conductivity increases,or the fractures get close to the well borehole,the effect becomes noticeable.Harmonic pulse testing can detect and evaluate the non-crossed fractures with appropriate spacing of the dual probe and pulse frequency.Through decreasing pulse frequency and increasing dual probe spacing,it can increase detection distance and improve the detection precision.However,this method becomes much less precise when the fractures conductivity become enough large or fractures located far away from the well borehole.
【Fund】: 国家自然科学基金项目(41204094);; 中石化科技部攻关项目(P13147);; 中国石油科技创新基金项目(2013D-5006-0306)资助
【CateGory Index】: P631.81
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
Chinese Journal Full-text Database 4 Hits
1 ZHOU Bo1,MO xiu-wen2,TAO Guo31.Department of Computer Engineering,Heilongjiang Institute of Science and Technology,Harbin 150027,China2.College of GeoExploartion Science and Technology,Jilin University,Changchun 130026,China3.College of Resource and Environment,China University of Petroleum,Beijing 102249,China;The Numerical Simulation of Wireline Formation Tester with Finite Element Method[J];Journal of Jilin University(Earth Science Edition);2007-03
2 GU Ning1, TAO Guo1, LIU Shu-min2 (1. University of Petroleum (Beijing), Well logging Key Laboratory of CNPC, Beiing 102249,China 2. China National offshore Oil Corporation, Beijing 101149,China);The finite element simulation of formation wireline testing for oil-water two-phase flow[J];Progress In Geophysics;2005-02
3 HUANG ZhaoQin,YAO Jun,WANG YueYing&TAO Ke School of Petroleum Engineering,China University of Petroleum(Huadong),Qingdao 266555,China;Numerical study on two-phase flow through fractured porous media[J];中国科学:技术科学(英文版);2011-09
4 Wang Guobin,Duan Qingqing,Cheng Fang and Ye Yunqing;Application of MDT dual packer technique to Xinjiang oilfield[J];Petroleum Instruments;2008-03
Chinese Journal Full-text Database 10 Hits
1 ZHOU Yan-min1,TAO Guo1,LI Xin-yu2(1.Well Logging Key Lab of CNPC,China Petroleum University,Beijing 102249,China;2.Faculty of Computer Science,Yangtze University,Jingzhou,Hubei 434102,China);On Permeability Inversion Method for a New Type of Wireline Formation Tester[J];Well Logging Technology;2008-06
2 SUN Huafeng1,2,TAO Guo1,2,ZHOU Yanmin1,2,CHEN Bao3,DU Ruifang3(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,China University of Petroleum,Beijing 102249,China;3.Technology Center,China Petroleum Logging CO.LTD.,Xi'an,Shaanxi 710021,China);The Evolutive Roles of WFT in Formation and Reservoir Evaluations[J];Well Logging Technology;2010-04
3 HU Fa-long,XIAO Li-zhi,ZHANG Yuan-zhong,MAO Zhi-qiang(Faculty of Resource and information Technology,China University of petroleum,Beijing 102249,China);The minimum testing time determination for wireline formation tester[J];Progress in Geophysics;2006-04
4 WANG Xiang-rong1,2,ZHOU Can-can2,WANG Chang-xue2,CAO Wen-li3(1.China University of mining and technology(Beijing),School of Resource and geoscience,Beijing 100083,China; 2.Department of Well Logging and Remote Sensing Technology,Research Institute of Petroleum Exploration and Development of China,Beijing 100083,China; 3.Research Institute of Petroleum Exploration and Development of Huabei oilfield,Renqu 062552,China);Review on application of the wireline formation tester[J];Progress in Geophysics;2008-05
5 XIAO Zhong-xiang1,XU Rui2(1.College of Petroleum Resources,Xi′an Shiyou University,Xi′an 710065,China;2.Tuha Business Division,China Petroleum Logging CO.LTD.,Shanshan 838202,China);Study of the method to extract oil-water interface automatically from MDT data[J];Progress in Geophysics;2008-06
6 LU Tao,LIU Xiangzheng,WANG Yu,CHU Nisheng,YUE Aizhong(Technical Center,China Petroleum Logging CO.LTD.,Xi'an,Shaanxi 710077,China);Response Analysis of Resistivity Probe for Formation Tester[J];Well Logging Technology;2012-05
7 DI De-jia1,2,TAO Guo1,2,YE Qing1,2 (1.State Key Laboratory of Petroleum Resource and Prospecting,China University of Petroleum,Beiiing 102249,China;2.Well logging Key Laboratory of CNPC,China University of Petroleum,Beijing 102249,China);Feasibility study on application of wireline formation testing to low permeability reservoirs[J];Progress in Geophysics;2012-06
8 MA Tian-Shou;CHEN Ping;State Key Lab.of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University;;Mathematical model and physical experimental research for pressure response of formation testing while drilling[J];Chinese Journal of Geophysics;2014-07
9 WANG XiangJie 1* , LUO XiaoXiong 2 , CONG FuGuan 3 & CUI JianZhong 1 1 Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110819, China; 2 Aluminum Corporation of China Ruimin Co., Fuzhou 350015, China; 3 Aluminum Corporation of China Northeast Light Alloy Co., Harbin 150060, China;Research progress of microstructure control for aluminium solidification process[J];科学通报(英文版);2013-Z1
10 ZHANG Na;YAO Jun;HUANG Zhaoqin;WANG Yueying;College of Petroleum Engineering China University of Petroleum( East China);;Locally Conservative Galerkin Numerical Simulation for Two-phase Flow in Porous Media[J];Chinese Journal of Computational Physics;2013-05
【Secondary Citations】
Chinese Journal Full-text Database 10 Hits
1 LI Shanyou1,WANG Xueliang2,ZHOU Zhenghua1(1. Institute of Engineering Mechanics, China Seismological Bureau, Harbin150080,China; 2. Chuxiong Normal College of Yunnan Province, Chuxiong675000,China);THE TIME-STEP NUMERICAL SIMULATION OF FREE FIELD MOTION OF LAYERED HALF-SPACE FOR INCLINED SEISMIC WAVES[J];Journal of Changchun University of Science and Technology;2003-03
2 HAN Lu YU Xiao-Wei ZHANG Gui-Bin (Geo-detection Laboratory(China University of Geosciences),Ministry of Education,Beijing 100083,China);Application and development of finite-element numerical modeling method in China lithosphere structure study[J];Progress In Geophysics;2004-04
3 YUE Wen-Zheng 1,2 TAO Guo2 ZHU Ke-Qin1 1 Department of Engineering Mechanics, Tsinghua University , Beijing 100084, China 2 CNPC Key Lab oratory of Well-logging, University of Petroleum, Beijing 102249, China;SIMULATION OF ELECTRICAL PROPERTIES OF ROCK SATURATED WITH MULTI-PHASE FLUIDS USING LATTICE GAS AUTOMATION[J];Chinese Journal of Geophysics;2004-05
4 GU Ning1, TAO Guo1, LIU Shu-Min2 1 University of Petroleum (Beijing), Well logging Key Laboratory of CNPC, Beijing 102249, China 2 China National Offshore Corporation, Beijing 101149,China;Responses of the wireline formation tester in permeability anisotropic formations[J];Chinese Journal of Geophysics;2005-01
5 HUANG ZhaoQin,YAO Jun,LI YaJun,WANG ChenChen&LüXinRui College of Petroleum Engineering,China University of Petroleum,Qingdao 266555,China;Permeability analysis of fractured vuggy porous media based on homogenization theory[J];中国科学:技术科学(英文版);2010-03
6 HUANG Zhaoqin,YAO Jun,WANG Yueying,LV Xinrui(School of Petroleum Engineering,China University of Petroleum,Qingdao 266555,China);Numerical Simulation on Water Flooding Development of Fractured Reservoirs in a Discrete-fracture Model[J];Chinese Journal of Computational Physics;2011-01
7 Yang Yong, Wang Helin, Yue Yunfu, Wang Jianfu, Zhang Xidong, Zhao Guowang and Cai Aibing// 1Petro China Dagang Oilfield Company, Dagang, Tianjian 300280;2 Beach Exploration and Development Company, PetroChina Dagang Oilfield Company, Dagang ,Tianjin 300280;Application of MDT Logging Technology in Accurate Identification of Knotty Oil and Gas Layers[J];China Petroleum Exploration;2006-05
8 LI Ya-jun,YAO Jun,HUANG Zhao-qin,ZHANG Kai (College of Petroleum Engineering,China University of Petroleum(East China),Qingdao 266555,China);Calculation of equivalent permeability tensor and study on representative element volume for modeling fractured reservoirs[J];Chinese Journal of Hydrodynamics;2010-01
9 FENG Jin-de1,CHENG Lin-song2,CHANG Yu-wen1,FENG Jin-cheng3,FU Ning-hai2,LUO Cheng2(1.Research Institute of Petroleum Exploration & Development,PetroChina,Beijing 100083,China;2.MOE Key Laboratory for Petroleum Engineering in China University of Petroleum,Beijing 102249,China;3.Production Technology Research Institute,Xinjiang Oilfield Company of PetroChina,Karamay 834000,China);Percolation characteristics of fractured anisotropic reservoir[J];Journal of China University of Petroleum(Edition of Natural Science);2009-01
10 HUANG Zhao-qin1,2,YAO Jun1,2,L Xin-rui1,2,LI Ya-jun1,2(1.College of Petroleum Engineering in China University of Petroleum,Qingdao 266555,China;2.MOE Key Laboratory of Petroleum Engineering in China University of Petroleum,Dongying 257061,China);Influence of fluid exchanging between rock matrix and fractures on seepage of fractured porous medium[J];Journal of China University of Petroleum(Edition of Natural Science);2010-02
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved