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Limitation of fault-sealing and its control on hydrocarbon accumulation——An example from the Laoyemiao Oilfi eld of the Nanpu Sag

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petroleum Science 2008年第4期5卷 295-301页

作者： Jiang Zhenxue Dong Yuexia Li Hongyi Liu Luofu Liu Guangdi Li Xiaoying Basin and Reservoir Research Center China University of Petroleum Beijing 102249 China state key {2. of petroleum resources and prospecting China University of Petroleum Beijing 102249 China Research Institute of Exploration and Development Jidong Oilfield PetroChina Tangshan Hebei 063004 China School of resources and Information Technology China University of Petroleum Beijing 102249 China

Based on previous studies on the internal structures of fault belts, the fault belts in the Laoyemiao Oilfield of the Nanpu Sag can be divided into three units, a crushed zone, an upper induced fracture zone and a lower induced fracture zone according to the log response characteristics. The upper induced fracture zone is characterized by the development of pervasive fractures and has a poor sealing or non-sealing capability. It therefore can act as pathways for hydrocarbon migration. The lower induced fracture zone consists of fewer fractures and has limited sealing capability. The crushed zone has a good sealing capability comparable to mudstone and can thus prevent lateral migration of fluid. Through physical modeling and comparing laboratory data with calculated data of oil column heights of traps sealed by faults, it is concluded that the fault-sealing capability for oil and gas is limited. When the oil column height reaches a threshold, oil will spill over from the top of reservoir along the lower induced fracture zone under the action of buoyancy, and the size of reservoir will remain unchanged. Analysis of the formation mechanisms of the fault-sealed reservoirs in the Nanpu Sag indicated that the charging sequence of oil and gas in the reservoir was from lower formation to upper formation, with the fault playing an important role in oil and gas accumulation. The hydrocarbon potential in reverse fault-sealed traps is much better than that in the consequent fault-sealed traps. The reverse fault-sealed traps are favorable and preferred exploration targets.

关键词： Limitation of fault-sealing fault belt oil column height hydrocarbon accumulation Nanpu Sag

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Theoretical analysis and experiment of micromechanics and mechanics-optics coupling of distributed optic-fiber crack sensing

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中国科学：技术科学英文版 2011年第S1期54卷 185-191页

作者： LIU HaoWu 1,2.CHEN Jiang 2.SUN Man 3 & DING Rui 2.1 state key {2. of Hydraulics and Mountain River Engineering,Sichuan university,Chengdu 610065,china 2.School of Water resource Hydropower,Sichuan university,Chengdu 610065,china 3 School Electrical Engineering and Information,Sichuan university,Chengdu 610065,china state key {2. of Hydraulics and Mountain River Engineering Sichuan University Chengdu China School of Water resource Hydropower Sichuan University Chengdu China School Electrical Engineering and Information Sichuan University Chengdu China

The micromechanical behaviors and mechanics-optics coupling effects of optic-fiber-concrete complex in the distributed optic-fiber sensing concrete-crack technology,which was used in health monitoring of Wu Gorge Bridge on Yangtze River and a large dam successfully,have been investigated.A micromechanical theoretical analysis method and micromechanical frictional contact bi-interface model,as well as a modified optical theoretical analysis method of the mechanics-optics coupling effects are presented.A series of verification experiments,including mechanical experiments and mechanics-optics coupling experiments,have been *** results of micromechanical theoretical analysis and the analysis of the modified theory of mechanics-optics coupling along with mechanical and optical experimental data are shown to be in close *** the micromechanical theory and the modified theory of mechanics-optics coupling with their analysis methods can not only enhance credibility of this novel distributed sensing technology but also provide a way to understand its sensing mechanism and optimize its technical details and system.

关键词： optic-fiber sensing mechanics-optics coupling micromechanics health monitoring concrete structure crack detection

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Comprehensive evaluation of mechanism of "chimney effect" using principles of magnetism, geochemistry and mineralogy

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Chinese Science Bulletin 1998年第9期43卷 743-748页

作者： LIU Qingsheng 1, CHENG Tongjin 2.and LIU Shugen 3 1. Department of Applied Geophysics, china university of Geosciences, Wuhan 430074, china 2. Center of petroleum Geochemistry, china National Star petroleum Corporation, Hefei 2.002., china 3. The St Department of Applied Geophysics China University of Geosciences Wuhan China Center of petroleum Geochemistry China National Star Petroleum Corporation Hefei China The state key {2. of Oil/Gas Reservoir Geology and Exploitation of china Chengdu Institute of Technology Chengdu China

Study of forming mechanism of "chimney-effect" (CE) has important significance for basic theory and applications of non-seismic geophysical and geochemical methods locating oil/gas reservoirs. The theoretical basis of comprehensive evaluation of mechanism of CE using principles of magnetism, geochemistry and mineralogy has been reviewed, with the problems to be solved: (ⅰ) study for the relationship between process of oil/gas migration and geochemical field; (ⅱ) analysis of genesis of magnetic, geochemical and mineralogical anomaly; (ⅲ) interpretation of surface soil magnetism and geochemical anomaly combined with seismic data.

关键词： chimney effect (CE) hydrocarbon microseepage oil/gas accumulation.

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Hydrocarbon accumulation in network and its application in the continental rift basin

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Science china Earth Sciences 2008年第S2期51卷 88-100页

作者： PANG XiongQi1,2.CHEN DongXia1,ZHANG ShanWen3,HAO Fang1,LIU Zheng1,LIU keyu3,SONG GuoQi4,WANG YongShi4,LUO XiaoRong5 & WU XiaoChun61 state key laboratory of petroleum resource and prospecting,Chinese university of petroleum,Beijing 102.4.,china 2.Basin and Reservoir Center,Chinese university of petroleum,Beijing 102.4.,china 3 SINOPEC Shengli Oilfield,Dongying 2.7051,china 4 CSIRO petroleum,P. O. Box 1130,Bentley,WA 6102.Australia 5 Institute of Geology and Geophysics,Chinese Academy of Science,Beijing 10002.,china 6 china National petroleum Corporation,Beijing 10072.,china state key {2. of petroleum resource and prospecting Chinese University of Petroleum Beijing China Basin and Reservoir Center Chinese University of Petroleum Beijing China SINOPEC Shengli Oilfield Dongying China CSIRO petroleum Bentley Australia Institute of Geology and Geophysics Chinese Academy of Science Beijing China china National petroleum Corporation Beijing China

The concept of hydrocarbon accumulation in network was presented on basis of the overall analysis of the formation and evolution characteristics of the continental faulted basin and of the systemic re-search on the major controlling factors on the hydrocarbon accumulation. The hydrocarbon accumu-lation in network can be defined as hydrocarbon accumulation in a three-dimensional network system which is constituted by the hydrocarbon migration passages under multiple dynamics,following the hydrocarbon generation from source rocks. The research shows that the hydrocarbon accumulation in network is composed of four elements,i.e.,hydrocarbon source (source rock kitchen),hydrocarbon accumulation terminal (trap),network pathway connecting source and terminal (transporting system),and network potential driving hydrocarbon migration in the network pathway (migration dynamics). Compared with other networks,hydrocarbon accumulation in network has three basic characteristics: the irreversible geological process of material and information flow in the network; the loss of material and information in the flow process in the network; the multiple dynamics in the flow process. Interac-tion of all the elements in the geological process can be called hydrocarbon accumulation in network. There are three basic models for hydrocarbon accumulation in network,that is,hydrocarbon accumu-lation in the network source area,hydrocarbon accumulation in the network pathway,and hydrocarbon accumulation in the network terminal. The key in the application of the hydrocarbon accumulation models in network in practice is to confirm the major accumulation stage and the function range of the four elements controlling the hydrocarbon firstly,to predict the profitable accumulation region by su-perposition of the favorable areas confirmed by four elements consequently,and to evaluate the oil-bearing property of the trap as well as confirm drilling targets. This paper takes the Dongying De-pression in the

关键词： continental rift basin hydrocarbon accumulation theory hydrocarbon network hydrocarbon accumulation in network Bohai Bay Basin

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Alkylation mechanism of benzene with 1-dodecene catalyzed by Et_3NHCl-AlCl_3

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Science china Chemistry 2010年第5期53卷 1101-1106页

作者： QI GuoPeng 1,JIANG Feng 1,SUN XueWen 2.& ZHAO SuoQi 2.1School of Chemical Engineering,Tianjin university,Tianjin 300072.china 2.2. key laboratory of Heavy Oil Processing,petroleum university of china,Beijing 102.4.,china School of Chemical Engineering Tianjin University Tianjin China state key {2. of Heavy Oil Processing Petroleum University of China Beijing China

The isotope exchange method was employed to investigate the catalytic mechanism of ionic liquid in alkylation of benzenes with *** is proposed that alkylation was induced by the Lewis acid AlCl3 which attracted π electrons of 1-dodecene to shift toward 1-carbon,thus forming a carbonium *** carbonium ion further reacted with benzenes to form a *** to unstabilit of the complex,a deuterated ring proton was transferred into an electronegative 1-carbon of the side chain to substitute for the AlCl3,accordingly 2.phenyldodecane was generated.

关键词： ionic liquid alkylation mechanism deuteriobenzene isotope exchange method

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Geochemical characteristics and applications of 18α(H)-neohopanes and 17α(H)-diahopanes

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Chinese Science Bulletin 2000年第19期45卷 1742-1748页

作者： WANG Chunjiang, FU Jiamo, SHENG Guoying, XIAO Qianhua, LI Jinyou, ZHANG Yali & PIAO Mingzhi1. Slate key laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences. Guang/hou 510640, {2. 2. Department of Geosciences, petroleum university, Beijing 102.00, {2. 3. Institute of petroleum Exploration and Exploitation, Liaohe Bureau of petroleum Exploration, Panjin 2.0000, {2. state key {2. of Organic Geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou China Department of Geosciences Petroleum University Beijing China Institute of petroleum Exploration and Exploitation Liaohe Bureau of Petroleum Exploration Panjin China

Distributions and geochemical significances of 18α(H)-neohopanes and of 17α(H)-diahopanes in oils from west Xialiaohe depression of the Bohai Bay Basin have been studied. Relative abundance of 18α(H)-neohopanes and of 17α(H)-diahopanes can be effectively used as maturity parameters, in a range of medium-high mature stage, based on consideration on sedimentary-organic facies of source rocks. With a dual geochemical significance of maturity and sedimentary-organic facies, neohopane and diahopane parameters can be well used in oil-source correlation and in petroleum population division. Formation, primary concentration and preservation of precursors of rearranged hopanes are closely related to depositional conditions such as Eh-pH and clays content. A series of probable diahopanes (series D) was detected in the oils, which exhibits a similar distribution pattern and geochemical behavior as that of 17α(H)-diahopanes (series B).

关键词： 18α(H)-neohopane 17α(H)-diahopane maturity sedimentary-organic facies.

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Hydrate film growth at the interface between gaseous CO_2.and sodium chloride solution

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Science china Chemistry 2009年第5期52卷 676-682页

作者： PENG BaoZi, SUN ChangYu, CHEN GuangJin, YANG LanYing, ZHOU Wei & PANG WeiXin state key {2. of Heavy Oil Processing, china university of petroleum, Beijing 102.4., china state key {2. of Heavy Oil Processing China University of Petroleum Beijing China

Greenhouse gas CO2.has become a serious problem for human beings. The hydrate technology has been considered as a possible approach to sequester CO2. In this work, the lateral growth rates of a CO2.hydrate film in aqueous NaCl solutions of different concentrations were measured by means of suspending a single gas bubble in liquid. The results show that the film growth rates depended on not only the driving force, but also the NaCl concentration, and the film growth rates decreased with the increasing NaCl concentration. The simple relationship vf ∝ΔT5/2.could be used to correlate the hydrate film growth rate of a CO2.+ NaCl + water system by introducing a NaCl concentration-dependent coefficient. The film thickness was investigated experimentally and evaluated theoretically; the results show that it became thicker at a higher NaCl concentration when the temperature and pressure were specified. In addition, a series of interesting phenomena, such as the occurrence of double hydrate films, were displayed and discussed.

关键词： hydrate interfaces hydrate film growth carbon dioxide sodium chloride

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Oil source and accumulation in the overthrust belt in the Ke-Bai region,Junggar Basin,west china

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petroleum Science 2010年第1期7卷 31-39页

作者： Liu Guangdi Gao Gang Huang Zhilong Yang Haifeng state key {2. of petroleum resources and prospecting China University of Petroleum Beijing 102249 China

The region around the Karamay-Baikouquan （Ke-Bai） overthrust belt is the richest in hydrocarbon accumulation in the Junggar Basin. Previous research has indicated that oil in the region came from the Fengcheng Formation in the Mahu Depression to the northeast of the region, but the oil distribution around the Mahu Depression is remarkably uneven. Large amounts of oil have been found in the Ke-Bai overthrust belt to the west of the depression and only some small oilfields have been discovered in the eastern margin of the depression. This uneven distribution revealed that the oil source of the Ke- Bai region might not be from the Mahu Depression. The oil type distribution and the oil migration pattern revealed in this paper showed that there may be another oil source under the Karamay overthrust. Based on geochemical data, the oil was classified into two types from the sterane and terpane characteristics. Type A oil was mainly distributed in the Huwan area and blocks V and VIII of the Karamay Oilfield in the southern part of the region, while type B oil was mainly distributed in the Baikouquan Oilfield in the northern part of the region. In addition, oil migration pathways and direction were determined by the values of diasterane / regular sterane and C30 moretane / C30 hopane ratios. It is shown that the oil of Huwan area on the hanging wall of the overthrust was mainly charged along the overthrust fault surfaces and then migrated to the west, whereas the oil in blocks V and VIII on the foot wall of the overthrust came from the Mahu Depression in the east. As a result, there may be at least two hydrocarbon source kitchens in the study area. The hydrocarbons in the blocks V and VIII on the footwall of the overthrust belt and in the Baikouquan Oilfield mainly came from the Fengcheng Formation in the Mahu Depression, and the hydrocarbons in the Huwan area on the hanging wall of the overthrust belt may come from another hydrocarbon source kitchen below the overthrust. Th

关键词： Overthrust belt oil migration oil type source rock Junggar Basin

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Characteristics of Paleozoic clastic reservoirs and the relationship with hydrocarbon accumulation in the Tazhong area of the Tarim Basin, west china

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petroleum Science 2010年第2期7卷 192-200页

作者： Wang Zhaoming Liu Luofu Yang Haijun Wang Weili ZhangBaoshou Han Jianfa Petrochina Tarim Oilfield Company Korla Xinjiang 841000 China state key {2. of petroleum resources and prospecting China University of Petroleum Beijing 102249 China Basin and Reservoir Research Center China University of Petroleum Beijing 102249 China

In order to predict favorable exploration areas of the Paleozoic, Carboniferous and Silurian clastic reservoirs in the Tazhong area of the Tarim Basin, west china, we studied the basic characteristics of Paleozoic clastic reservoirs in the Tazhong area based on a lot of data. Several issues about the hydrocarbon accumulation related to the reservoirs were also discussed. The results were concluded that： the high-value areas of the porosity and permeability of clastic reservoirs were located in the southeast of the Tazhong area; the content of cement （carbonate cement in particular） was the main factor controlling the porosity and permeability of clastic reservoirs; the hydrocarbon distributions of Carboniferous and Silurian clastic reservoirs were closely related to the porosity and permeability; the favorable hydrocarbon accumulation areas of the two sets of strata were located in the southeast of this area, especially in the updip pinch-out area.

关键词： Clastic reservoir Carboniferous Silurian Paleozoic hydrocarbon accumulation Tazhong area Tarim Basin

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Stress distribution rule of roadway affected by overhead mining in gently inclined coal seams group

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中国有色金属学会会刊：英文版 2011年第S3期21卷 529-535页

作者： KANG Qin-rong1, 2. TANG Jian-xin1, 2. HU Hai1, 2. ZHANG Wei-zhong1, 3 1. College of resource and Environmental Sciences, Chongqing university, Chongqing 400030, {2. 2. state key laboratory of Coal Mine Disaster Dynamics and Control, Chongqing university, Chongqing 400030, {2. 3. School of Safety Science and Administration, Zhongnan university of Economics and Law, Wuhan 430074, {2. College of resource and Environmental Sciences Chongqing University Chongqing 400030 China state key {2. of Coal Mine Disaster Dynamics and Control Chongqing University Chongqing 400030 China School of Safety Science and Administration Zhongnan University of Economics and Law Wuhan 430074 China

In light of the severe deformation and destruction of the district raise tunnel in the mining area at the northern part of the Lubanshan colliery, by the theoretic analysis and numerical simulation, both the mining stress distribution in seams group and the deformation and destruction mechanism of floor district raise were investigated. The results show that, at the maximum vertical distance of 40 m, the abutment stress has an influence on the recovery of 2. and 3# coal seam and 8# coal seam at distance of 30 m. As a result, the recovery of 8# is rather than those of 2. or 3# coal seam, which contributes to the deformation and destruction of the district raise surrounding rock. The major factors affecting the abutment stress include the mining depth, mining height, residual gob space, adjacent working faces and short spacing coal seam recovery.

关键词： coal seams group stress distribution district raise surrounding rock deformation and destruction abutment stress

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