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| 1 | Magnetism parameters characteristics of drilling deposits in Jianghan Plain and indication for forming of the Yangtze River Three Gorges显示文摘The forming time of the Yangtze River Three Gorges is considered as one of keys in the research on the Yangtze River,also is one of the most disputed hotspots.In order to solve the difficult problem,the authors adopt the internationally recognized thoughts and methods of substance tracing from source to sink.The lithologic characteristics,magnetic parameters and magnetic mineral characteristics of deposits in 2 bores are analyzed,which are both sampled from the sedimentary center of the Jianghan Plain.The results are as follows:At about 110 m depth of the core,the contents of coarse materials and stable magnetic mineral both increase significantly.Meanwhile,the magnetic susceptibility of sediment,saturation isothermal remanent magnetization and magnetic susceptibility values of anhysteretic remanent magnetism increase suddenly,which all reflect that at about 110 m depth,the important adjustment has appeared in water system of the Jianghan Plain,and the sedimentary environment and material composition have changed greatly.And it may be the horizon where the Yangtze River Three Gorges formed,its forming time reflected by the paleomagnetic dating is between 1.17 and 1.12Ma B.P. | ZHANG YuFen LI Chang'An WANG QiuLiang CHEN Liang Ma YongFa KANG ChunGuo | 2008 | Chinese Science Bulletin2008，53，4： | 34 |
| 2 | Geophysical-Geological Interpretation and Deep-Seated Gold Deposit Prospecting in Sanshandong-Jiaojia Area, Eastern Shandong Province, China显示文摘Integrated gravitational, electrical-magnetic surveys and data processing carried out in the Sanshandao-Jiaojia area, Eastern Shandong Province, northeast China, aim to illuminate the geological characteristics of this shallow-covered area and delineate deep-seated gold prospecting targets. In this region, altogether 12 faults exert critical control on distribution of three types of Early Precambrian metamorphic rock series, i.e. those in the metamorphic rock area, in the granitic rock area underlying the metamorphic rock, and in the remnant metamorphic rock area in granites, respectively. Additionally, the faults have major effects on distribution of four Mesozoic Linglong rock bodies of granite, i.e. the Cangshang, Liangguo, Zhuqiao-Miaojia and Jincheng granites. The Sanshandao and Jiaojia Faults are two well-known regional ore-controlling faults; they have opposite dip direction, and intersect at a depth of 4500 m. Fracture alteration zones have striking geophysical differences relative to the surrounding county rocks. The two faults extend down along dip direction in a gentle wave form, and appear at some steps with different dips. These steps comprise favorable gold prospecting areas, consistent with a step metallogenic model. Six deep-seated gold-prospecting targets are delineated, i.e. Jincheng-Qianchenjia, Xiaoxizhuang-Zhaoxian, Xiyou-Wujiazhuangzi, Xiangyangling-Xinlicun, Panjiawuzi and Miaojia-Pinglidian. | SONG Mingchun WAN Guopu CAO Chunguo HE Chunyan | 2012 | Acta Geologica Sinica(English Edition)2012，86，3： | 15 |
| 3 | Solving traveling salesman problems using generalized chromosome genetic algorithm显示文摘Generalized chromosome genetic algorithm (GCGA) was proposed for solving generalized traveling salesman problems (GTSP) as reported in the authors’ earlier work. Theoretically, the GCGA could also be used to solve the classical traveling salesman problem (CTSP), which has not been reported by others. In this paper, the generalized chromosome characteristics are analyzed and the feasibility for consistently solving the GTSP and CTSP is verified. Numerical experiments show the advantages of the GCGA for solving a large- scale CTSP. | Jinhui Yang Chunguo Wu Heow Pueh Lee Yanchun Liang | 2008 | Progress in Natural Science:Materials International2008，18，7： | 15 |
| 4 | Targeted Mutagenesis of NAC Transcription Factor Gene,OsN AC041,Leading to Salt Sensitivity in Rice显示文摘Salinity is a major abiotic stress factor that seriously affects plant growth. Many genes are involved in the response to salt stress with various metabolism pathways. A number of plant transcription factor family genes have been found to be involved in the salt stress response, and NAM, ATAF and CUC(NAC) transcription factors are thought to act as active regulators during abiotic stress, especially salt stress. In this study, we detected a rice NAC transcription factor coding gene, OsNAC041, and confirmed that it influenced the germination of seeds under salt stress and salt tolerance of plants. OsNAC041 was primarily expressed in the leaves and located in the nucleus. Furthermore, the CRISPR/Cas9 method was used to obtain a targeted osnac041 mutant, of which the plant height was higher than that of the wild-type, showing increased salt sensitivity. Moreover, RNA-seq analysis revealed a number of differentially expressed genes(DEGs) involved in several important signaling pathways in the osnac041 mutant. Subsequently, Kyoto Encyclopedia of Genes and Genomes annotation also revealed differential expression of DEGs associated with mitogen-activated protein kinase signaling, peroxisome, eukaryotictype ABC transporters, photosynthesis and plant hormones, which are involved in stress-related signaling pathways. Overall, our study suggested that OsNAC041 was involved in the salt stress response in rice. These findings not only provide empirical evidence of OsNAC041 function, but also provide new insight into its potential application in rice resistance breeding. | WANG Bo ZHONG Zhaohui ZHANG Huanhuan WANG Xia LIU Binglin YANG Lijia HAN Xiangyan YU Deshui ZHENG Xuelian WANG Chunguo SONG Wenqin CHEN Chengbin ZHANG Yong | 2019 | Rice science2019，26，2： | 8 |
| 5 | Energy efficient design for multiuser downlink energy and uplink information transfer in 5G显示文摘Simultaneous wireless information and power transfer(SWIPT) is studied in this paper for the wireless powered downlink(DL) and multiuser information uplink(UL) systems. The objective is to maximize the energy efficiency defined as the ratio of the achieved throughput over the energy cost by optimizing the time allocation for the DL and multi-user UL traffics and its goal is to obtain the analytical expression to the optimal time allocation yet the resulting difficulty comes from the sum throughput of the multiuser in UL as well as the corresponding power consumption. To tackle this, the Jensen inequality is applied to approximating the exact expression of the sum throughput for the UL multi-users, leading to an upper-bound of the counterpart.The final closed form is exact in the single-user scenario yet approximate in the multi-user scenario. Numerical simulations verify the tightness of this approximation and the performances of the proposed analytical scheme. | Chunguo LI Yanshan LI Kang SONG Luxi YANG | 2016 | Science China(Information Sciences)2016，59，2： | 7 |
| 6 | Process and mechanism for oil and gas accumulation, adjustment and reconstruction in Puguang Gas Field, Northeast Sichuan Basin, China显示文摘With the discoveries of a series of large gas fields in the northeast of Sichuan Basin, such as Puguang and Longgang gas fields, the formation mechanism of the gas reservoir containing high H2S in the ancient marine carbonate formation in superposition-basin becomes a hot topic in the field of petroleum geology. Based on the structure inversion, numerical simulation, and geochemical research, we show at least two intervals of fluid transfer in Puguang paleo-oil reservoir, one in the forepart of late Indo-Chinese epoch to early Yanshan epoch and the other in the metaphase of early Yanshan epoch. Oil and gas accumulation occurred at Puguang structure through Puguang-Dongyuezhai faults and dolomite beds in reef and shoal facies in Changxing Formation (P2ch) - Feixianguan Formation (T1f) in the northwest and southwest directions along three main migration pathways, to form Puguang paleo-oil reservoir. Since crude oil is pyrolysised in the early stage of middle Yanshan epoch, Puguang gas reservoir has experienced fluid adjusting process controlled by tectonic movement and geochemical reconstruction process controlled by thermochemical sulfate reduction (TSR). Middle Yan-shan epoch is the main period during which the Puguang gas reservoir experienced the geochemical reaction of TSR. On one hand, TSR can recreate the fluid in gas reservoir, which makes the gas drying index larger and carbon isotope heavier. On the other hand, the reciprocity between fluid regarding TSR (hydrocarbon, H2S, and water) and reservoir rock induces erosion of the reservoir rocks and anhydrite alteration, which improves reservoir petrophysical properties. Superimposed by later tectonic movement, the fluid in Puguang reservoir has twice experienced adjustment, one in the late Yanshan epoch to the early Himalayan epoch and the other time in late Himalayan epoch, after which Puguang gas reservoir is finally developed. | DU ChunGuo HAO Fang ZOU HuaYao ZHU YangMing CAI XunYu WANG CunWu | 2009 | Science China Earth Sciences2009，52，9： | 6 |
| 7 | Draft genome sequence of cauliflower(Brassica oleracea L.var.botrytis)provides new insights into the C genome in Brassica species显示文摘Cauliflower is an important variety of Brassica oleracea and is planted worldwide.Here,the high-quality genome sequence of cauliflower was reported.The assembled cauliflower genome was 584.60 Mb in size,with a contig N50 of 2.11 Mb,and contained 47,772 genes;56.65%of the genome was composed of repetitive sequences.Among these sequences,long terminal repeats(LTRs)were the most abundant(32.71%of the genome),followed by transposable elements(TEs)(12.62%).Comparative genomic analysis confirmed that after an ancient paleohexaploidy(γ)event,cauliflower underwent two whole-genome duplication(WGD)events shared with Arabidopsis and an additional whole-genome triplication(WGT)event shared with other Brassica species.The present cultivated cauliflower diverged from the ancestral B.oleracea species~3.0 million years ago(Mya).The speciation of cauliflower(~2.0 Mya)was later than that of B.oleracea L.var.capitata(approximately 2.6 Mya)and other Brassica species(over 2.0 Mya).Chromosome no.03 of cauliflower shared the most syntenic blocks with the A,B,and C genomes of Brassica species and its eight other chromosomes,implying that chromosome no.03 might be the most ancient one in the cauliflower genome,which was consistent with the chromosome being inherited from the common ancestor of Brassica species.In addition,2,718 specific genes,228 expanded genes,2 contracted genes,and 1,065 positively selected genes in cauliflower were identified and functionally annotated.These findings provide new insights into the genomic diversity of Brassica species and serve as a valuable reference for molecular breeding of cauliflower. | Deling Sun Chunguo Wang Xiaoli Zhang Wenlin Zhang Hanmin Jiang Xingwei Yao Lili Liu Zhenghua Wen Guobao Niu Xiaozheng Shan | 2019 | Horticulture Research2019，6，1： | 6 |
| 8 | Outage Probability Minimization for Low-Altitude UAV-Enabled Full-Duplex Mobile Relaying Systems显示文摘In this paper, a novel unmanned aerial vehicle(UAV)-enabled full duplex decode-and-forward(DF) technique is used in mobile relaying system. Compared with conventional static relaying, mobile relaying provides more degree of freedom for experiencing better channel conditions and further improving the system reliable performance. The source and relay transmit power as well as relay trajectory are jointly optimized for sum outage probability minimization in mobile relaying system. Due to the non-convex nature of the original problem, block coordinate decent optimization techniques are employed to decompose it into two sub-problems, which leads to an efficient iterative algorithm. Specifically, for the pre-determined relay trajectory, the optimal transmit power of source and relay are obtained by solving Karush-Kuhn-Tucker(KKT) conditions. For the given source/relay power allocation, the optimal UAV trajectory is obtained by solving dual problem. Based on the two steps, an iterative algorithm is proposed to jointly optimize source/relay power allocation and UAV trajectory alternately. Numerical results show the performance gain of our proposed scheme. | Meng Hua Yi Wang Zhengming Zhang Chunguo Li Yongming Huang Luxi Yang | 2018 | China Communications2018，15，5： | 5 |
| 9 | Accumulation Mechanisms and Evolution History of the Giant Puguang Gas Field,Sichuan Basin,China显示文摘稳固的沥青在 Puguang 煤气的地里在整个碳酸盐水库被发现,最大的煤气的地到目前为止在中国在海洋的碳酸盐发现了,证实 Puguang 煤气的地从一座 paleo 油水库演变。液体水管系统在这域里的集中的油累积的时候被重建,并且石油移植小径用一个 3-D 模型被建模并且由 geochemical 参数跟踪了。向前建模并且倒置跟踪与对方一起与一致,两个显示油在 Puguang-Dongyuezhai 结构积累了从一个生产厨房发源到 Puguang 气体地的西北。生存于富有腐殖质的有机物在东北四川盆,是垂直地近来源的岩石和旁边地在生产附近的厨房的液体水管系统的发展,并且集中油统治的器官富人的上面的二叠的来源岩石的免职从生产厨房的一个大区域发源,是为巨大的 Puguang 煤气的地从演变的巨大的paleo油水库的形成的三个要求。Puguang 煤气的地经历了三阶段的进化。累积以后的进程,特别在 hydrocarbon-water-rock 系统的器官无机的相互作用,深刻地不仅改变了石油液体的作文和特征,而且显然在水库改变了物理化学的条件并且导致了碳酸盐矿物质的复杂降水和答案。 | HAO Fang GUO Tonglou DU Chunguo ZOU Huayao CAI Xunyu ZHU Yangming LI Pingping WANG Chunwu ZHANG Yuanchun | 2009 | Acta Geologica Sinica(English Edition)2009，83，1： | 4 |
| 10 | Features of Sand-dust Deposits in Harbin City,China显示文摘From the sedimentologic view,this paper analyses the grain-size distribution and the chemical composition of the deposits from sand-dust storm,occurring in Harbin on March 20,2002.The result indicates that there exist plentiful coarse matters in the sand-dust deposits in Harbin,and the sand-dust composition presents obvious three peak distribu-tion characteristics,indicating that the sand-dust in Harbin is composed of multi-origin components.The grain-size composition consists of silt(4-8Ф),accounting for 71.18% of the total,sand(>4Ф),21.70%,and clay(<8Ф),only 7.13%.The average grain size(Mz) is 5.14Ф.The chemical elements of the deposits are mainly SiO2 and Al2O3 and Fe2O3,totally occupying 77.8%.The enrichment factors(EF) of Mg,K,Si,Fe,Mn,P,Ti,Co,Ni and V elements are all about 1,which mainly come from lithosphere source,while parts of Cu,Pb,Zn,Cr and Se elements are from pollution sources out of lithosphere source,and As,Cd and Sb elements are mainly from pollution sources.Based on the com-prehensive analysis of grain-size,chemical composition,enrichment factor(EF),discriminant function(DF) and matter source index(PI),this paper points out that the grain-size distribution and element composition of the sand-dust deposits in Harbin are evidently different from the loess and sand-dust in Lanzhou,and that matter source of the sand-dust in Harbin is different from the loess in Northwest China and the sand-dust in Lanzhou.The sand-dust deposits in Harbin are an admixture of coarse grains transmitted in short distance and fine grains transported in long distance.The plentiful coarse grains of the sand-dust deposits in Harbin origin from sand of local spot,and are the near-source deposits transported by low altitude airflow. | XIE Yuanyun ZHANG yan HE Kui ZHOU Jia KANG Chunguo | 2006 | Chinese Geographical Science2006，16，4： | 4 |
| 11 | Human endostatin gene transfer,either naked or with liposome,has the same inhibitory effect on growth of mouse liver tumor cells in vivo显示文摘AIM: To explore a safe and efficient strategy of tumortherapy using anti-angiogenetic agents.METHODS: Endostatin gene with a signal sequence ofhuman IgG y chain was amplified by PCR and cloned intopVAXl plasmid which was the only vector authorized byFDA in clinical trial to construct a recombinant plasmidnamed as pVAX-sEN. The recombinant plasmid wasdetected with EcoRI/KpnI and DNA sequencing. BALB/c micebearing hepatocarcinoma cell line H22 were treated withnaked pVAX-sEN or liposome-DNA complex in which thedose of DNA and the ratio of DNA and liposome weredifferent from each other. To compare the efficiency ofgene transfection, expression of endostatin at the treatedtumor site was assayed with ELISA. To investigate the effectof pVAXI-sEN on hepatocellular carcinoma, pVAX-sENeither naked or in liposome-DNA complex was injectedinto BALB/c mice bearing H22, then the diameter of tumorswas measured, microvessel density was detected byimmunohistochemistry, endostatin expression in vivo wasassayed at different time points.RESULTS: DNA sequencing showed the endostatin genewith the signal peptide was correctly cloned. In situ geneexpression assay indicated that both the ratio of DNAand liposome and the dose of DNA could affect the genetransfection efficiency. Interestingly, naked pVAX-sEN hada similar in situ endostatin expression to pVAX-sEN withliposome. Animal experiments showed that pVAX-sENtogether with pVAX-sEN-liposome complex could efficientlysuppress the growth of mouse hepatoma cells.CONCLUSION: Naked endostatin plasmid intratumoralinjection can get a similar gene transfection efficiency toliposome-DNA complex when used in situ. | Chun-HongMa YanZhang Xiao-YanWang Li-FenGao HuaLiu ChunGuo Su-XiaLiu Ying-Lincao Li-NingZhang Wen-ShengSun | 2004 | World Journal of Gastroenterology2004，10，19： | 4 |
| 12 | Mantle melting factors and amagmatic crustal accretion of the Gakkel ridge, Arctic Ocean显示文摘Spreading rate is a primary factor of mantle melting and tectonic behavior of the global mid-ocean ridges. The spreading rate of the Gakkel ridge decreases gradually from west to east. However, the Gakkel ridge can be divided into four thick-and-thin zones with varying crustal thicknesses along ridge axis. This phenomenon indicates that mantle melting of the Gakkel ridge is not a simple function of spreading rate. Mantle temperature, water content,mantle composition, and other factors are important in crustal accretion processes. Based on gravity-derived crustal thickness and wet melting model, we estimate that the mantle potential temperatures of the four zones are1 270, 1 220, 1 280, and 1 280°C(assuming that mantle water content equals to global average value), with corresponding mantle water contents of 210, 0, 340, and 280 mg/kg(assuming that mantle potential temperature is 1 260°C), respectivly. The western thinned crust zone is best modeled with low mantle temperature, whereas the other zones are mainly controlled by the enhanced conduction caused by the slower spreading rate. Along the Gakkel ridge, the crustal thickness is consistent with rock samples types. Predominated serpentinized peridotite and basalt are found in the area with crustal thickness <1.5 km and >2.5 km, respectively. The rock samples are including from basalt to peridotite in the area with crustal thickness between 1.5 and 2.5 km. Based on this consistency, the traditional magmatic accretion zone accounted for only 44% and amagmatic accretion accounted for 29% of the Gakkel ridge. The amagmatic accretion is a significant characteristic of the ultra-slow spreading ridge. | ZHANG Tao GAO Jinyao CHEN Mei YANG Chunguo SHEN Zhongyan ZHOU Zhiyuan WU Zhaocai SUN Yunfan | 2015 | Acta Oceanologica Sinica2015，34，6： | 3 |
| 13 | Changing provenance of late Cenozoic sediments in the Jianghan Basin显示文摘The Yangtze River is one of the most important components of the East Asia river system.In this study,sediments in the Jianghan Basin,middle Yangtze River,were selected for trace element and rare earth element(REE)measurements,in order to decipher information on the change of sediment provenance and evolution of the Yangtze River.According to the elemental variations,the late Cenozoic sediments of the Jianghan Basin could be divided into four parts.During 2.68e2.28 Ma and 1.25e0 Ma,provenance of the sediments was consistent,whereas sediments were derived from variable sources during2.28e1.25 Ma.Comparison of the elemental compositions between the Pliocene and Quaternary sediments revealed a change in sediment source from a more felsic source area to a more basic source area around the PlioceneeQuaternary boundary.Input from the Emeishan LIP should account for this provenance change.Based on the provenance analysis of sediments in the Jianghan Basin,we infer that the Yangtze River developed into a large river with its drainage basin extended to the Emeishan LIP no later than the PlioceneeQuaternary boundary. | Lei Shao Shengyuan Yuan Chang'an Li Chunguo Kang Wenjing Zhu Yindi Liu Jietao Wang | 2015 | Geoscience Frontiers2015，6，4： | 3 |
| 14 | A Novel Iterative Velocity Control Algorithm and Its FPGA Implementation Based on Trigonometric Function显示文摘The servo motor's flexible acceleration/deceleration(acc/dec) control is an emerging research topic in the automation field. A velocity control algorithm based on trigonometric function is proposed in this paper.With required parameters, it transforms trigonometric calculations into elementary mathematical operations and calculates the velocity controlling values iteratively, which could avoid trigonometric calculation and reduce the computation time. Experimental results show that the proposed algorithm is suitable for implementation on field programmable gate arrays and achieves a flexible controlling, enhancing both the equipment's stability and reliability. It is promising to significantly improve the high-speed computerized numerical control equipment's controlling accuracy, without a huge hardware resource consumption. | WEN Quangang LIANG Yanchun Adriano Tavares Ricardo Teixeira WU Chunguo | 2019 | Chinese Journal of Electronics2019，28，2： | 2 |
| 15 | The Numerical Simulation on Hollow Part's Precise Sizing Process With Cross-wedge Rolling显示文摘The hollow parts formed with cross-wedge rolling (CWR) have a wide application in many fields, such as architecture and automobile, etc. But the finished configuration of part’s cross section was always ellipse and it was hard to make it satisfied with traditional forming process. This paper proposed a FEM model of hollow workpiece of CWR in the sizing process, and simulated the deformation condition using the ANSYS program. Three kinds of parts with different wall thickness were calculated. Some stress and strain fields of the deformed hollow parts at various conditions are gained. The influence of wall thickness on the distribution of stress and strain was analyzed. The paper also found two phenomena, which never have been seen at traditional experiment, and author tried to give some explanations. The ANSYS program provided the relationship between the tolerance of the deformed workpiece and the deforming parameter. It is helpful to design the sizing dies of a new precise forming process of hollow parts on the CWR. The new process that designed through the information of FEM improved the accuracy of hollow parts on CWR. It proved the validity and practicability of numerical simulation. | Jingliang Wang, Chunguo Xu, Guangsheng Ren Beijing Research Institute of M./E. Technology, Beijing 100083,China | 2000 | Journal of Shanghai Jiaotong university(Science)2000，5，1： | 2 |
| 16 | Silencing of pkm2 increases the efficacy of docetaxel in human lung cancer xenografts in mice显示文摘 | Hua‐shanShi DanLi JingZhang Yong‐shengWang LiYang Hai‐longZhang Xian‐huoWang BoMu WeiWang YuMa Fu‐chunGuo Yu‐quanWei | 2010 | Cancer Science2010，，6： | 2 |
| 17 | Complex Seismic Focus Structure and Earthquake-Triggered Landslide Distribution:Analysis of the 2014 Ludian M_w6.1 Earthquake in Yunnan显示文摘Objective The 2014 Ludian M_w6.1 earthquake in Yunnan occurred in a mountainous area with complex tectonics and topography,which caused serious damage as well as co-seismic landslides of an unusual large scale.Because the suspected seismogenic faults on the surface,distribution of aftershocks and focal mechanism | CHEN Xiaoli LIU Chunguo | 2017 | Acta Geologica Sinica(English Edition)2017，91，2： | 2 |
| 18 | Structure and Fluid Transportation Performance of Faults in the Changxing-Feixianguan Formation, Xuanhan County, Northeastern Sichuan Basin显示文摘On the basis of field observations, microscopic thin-sections and laboratory data analysis of ten faults in Xuanhan County area, northeastern Sichuan Basin, central China, the internal and megascopic structures and tectonite development characteristics are mainly controlled by the geomechanical quality in brittle formation of the Changxing-Feixianguan Formation. The fluid transportation performance difference between the faults formed by different geomechanics or different structural parts of the same fault are controlled by the megascopic structure and tectonite development characteristics. For instance, the extension fault structure consists of a tectonite breccia zone and an extension fracture zone. Good fluid transportation performance zones are the extension fracture zone adjacent to the tectonite breccia zone and the breccia zone formed at the early evolutionary stage. The typical compression fault structure consists of a boulder-clay zone or zones of grinding gravel rock, compression foliation, tectonite lens, and dense fracture development. The dense fracture development zone is the best fluid transporting area at a certain scale of the compression fault, and then the lens, grinding gravel rock zone and compression foliation zones are the worst areas for hydrocarbon migration. The typical tensor-shear fault with a certain scale can be divided into boulder-clay or grinding gravel rock zones of the fault, as well as a pinnate fractures zone and a derivative fractures zone. The grinding gravel rock zone is the worst one for fluid transportation. Because of the fracture mesh connectivity and better penetration ability, the pinnate fractures zone provides the dominant pathway for hydrocarbon vertical migration along the tensor-shear fault. | DU Chunguo WANG Jianjun ZHANG Jun WANG Ping XUE Mei ZHOU Huayao | 2014 | Acta Geologica Sinica(English Edition)2014，88，3： | 2 |
| 19 | Summarization on variable liquid thrust rocket engines显示文摘The technology actuality and development trend of variable thrust rocket engines at home and abroad are summarized. Key technologies of developing variable thrust rocket engines are analyzed. Development advices on developing variable thrust rocket engines that are adapted to the situation of our country are brought forward. | YUE ChunGuo LI JinXian HOU Xiao FENG XiPing YANG ShuJun | 2009 | Science China(Technological Sciences)2009，52，10： | 2 |
| 20 | Diagenesis and Restructuring Mechanism of Oil and Gas Reservoir in the Marine Carbonate Formation,Northeastern Sichuan:A Case Study of the Puguang Gas Reservoir显示文摘Based on the technology of balanced cross-section and physical simulation experiments associated with natural gas geochemical characteristic analyses, core and thin section observations, it has been proven that the Puguang gas reservoir has experienced two periods of diagenesis and restructuring since the Late Indo-Chinese epoch. One is the fluid transfer controlled by the tectonic movement and the other is geochemical reconstruction controlled by thermochemical sulfate reduction (TSR). The middle Yanshan epoch was the main period that the Puguang gas reservoir experienced the geochemical reaction of TSR. TSR can recreate the fluid in the gas reservoir, which makes the gas drying index higher and carbon isotope heavier because C2+ (ethane and heavy hydrocarbon) and 12C (carbon 12 isotope) is first consumed relative to CH4 and 13C (carbon 13 isotope). However, the reciprocity between fluid regarding TSR (hydrocarbon, sulfureted hydrogen (H2S) , and water) and reservoir rock results in reservoir rock erosion and anhydrite alteration, which increases porosity in reservoir, thereby improving the petrophysical properties. Superimposed by later tectonic movement, the fluid in Puguang reservoir has twice experienced adjustment, one in the late Yanshan epoch to the early Himalayan epoch and the other time in late Himalayan epoch, after which Puguang gas reservoir is finally developed. | DU Chunguo WANG Jianjun ZOU Huayao ZHU Yangming WANG Cunwu | 2009 | Acta Geologica Sinica(English Edition)2009，83，6： | 2 |
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