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| 1 | Origin of natural sulphur-bearing immiscible inclusions and H_2S in oolite gas reservoir, Eastern Sichuan显示文摘Based on results of microscopic observation and laser Raman analysis about fluid in- clusions, multiple special forms of immiscible inclusions that contain sulphur, liquid hydrocarbon, bi- tumen, etc. were discovered in samples collected from the H2S gas reservoir-containing carbonates in the Lower Triassic Feixianguan Formation in the Jinzhu-Luojia area, Kai County, Sichuan Province. Based on the lithology and burial history of the strata involved as well as measurement results of homogenization temperature of fluid inclusions, bitumen reflectivity, etc., it is concluded that the H2S in the gas reservoir resulted from the thermal reaction between hydrocarbons in reservoir and CaSO4 in the gypsum-bearing dolostone section at the high temperature (140℃―170℃) oil-cracked gas for- mation stage in Late Cretaceous. Thereafter, research on a great number of immiscible inclusions in the reservoir reveals that elemental sulphur resulted from oxidation of part of the earlier-formed H2S and further reaction between sulphates, hydrocarbons and H2S in geological fluids in H2S-bearing gas reservoir at a temperature of 86℃―89℃ and a pressure of 340×105Pa and during the regional uplift stage as characterized by temperature decrease and pressure decrease in Tertiary. Meanwhile, gyp- sum, anhydrite and calcite formed at this stage would trap particles like elemental sulphur and result in a variety of special forms of immiscible inclusions, and these inclusions would contain information concerning the complexity of the fluids in the reservoir and the origin of H2S and natural sulphur in the gas reservoir. | LIU Dehan XIAO Xianming XIONG Yongqiang GENG Ansong TIAN Hui PENG Ping'an SHEN Jiagui WANG Yunpeng | 2006 | Science China Earth Sciences2006，49，3： | 10 |
| 2 | Observation of hydrocarbon generation and migration of highly-matured carbonates by means of laser-induced fluorescence microscopy显示文摘Some important information on hydrocarbon generation, inclusion and migration inhighly-matured carbonates of lower Palaeozoic age from the Ordos Basin and Tarim Basin has been analyzed by a newly-combined laser-induced fluorescence microscope (LFM) designed by our laboratory. The following information has been obtained from the lower Ordovician lamellar carbonates with equivalent vitrinite reflectance (Ro) as high as 1.6%-1.7% and residual TOC of 0.14%-0.35% from the Ordos Basin: wide occurrences of oil and source macerals with strong fluorescence, including G.Prisca alginite, lamalginite, telalginite and algae-detrinite; fluorescing asphalt among mineral crystals; some groundmass and spheroid-like reservoir bitumen with high maturation levels in the pores of dolomites. Various kinds of fluorescing organic inclusions and asphalt have been found in the carbonates, calcareous shales and silt-shales with high maturation levels from the Cambrian-Ordovician strata in the Tarim Basin. All this helps us find | Dehan Liu Xianming Xiao Rongfen Jia Jiagui Shen Zufa Liu Yunpeng Wang Ansong Geng | 2000 | Chinese Science Bulletin2000，45，S1： | 5 |
| 3 | Mass balance calculation of the pyrolysates generated from marine crude oil:A prediction model of oil cracking gas resources based on solid bitumen in reservoir显示文摘Oil cracking gas plays an important role in the resources of natural gas in the basins with high and over mature marine source rocks in China. The prediction of the oil cracking gas resources becomes nec-essary and urgent in the gas exploration in these basins. A marine crude oil sample was pyrolyzed using sealed gold tubes system. The pyrolysates including gas,liquid and solid were quantitatively analyzed. Based on the pyrolysis data and kinetic calculation,the yield correlativity among gas,liquid and solid products was regressed with high correlative coefficients to establish a prediction model suitable for the resource estimation of oil cracking gas. The verification formula for this model was also established on the principle of mass conservation. The affecting factors and the application precondi-tions of this prediction model were discussed. This model would enlighten and provide some new ideas for the resource assessment of natural gas in the high and over mature marine carbonate source rock areas in China. It is expected to be valuable in gas exploration. | WANG TongShan GENG AnSong XIONG YongQiang GENG XinHua | 2007 | Chinese Science Bulletin2007，52，11： | 4 |
| 4 | Quantitative assessment of gas washing of oils in the Tazhong area of the Tarim Basin,Northwest China显示文摘Gas washing has been known in the Tazhong area of the Tarim Basin,but its quantitative assessment has not yet been reported.Here the influence of gas washing fractionation in the area was discussed based on the gas chromatogram data of 68 oils and the results of the mixing experiments of a black oil and a condensate.The results show that the intensity of gas washing fractionation decreased generally from northern to southern part and vertically from deep reservoirs to shallow reservoirs.The gas washing fractionation was mainly controlled by fault systems in this area,with the increase of n-alkane mass depletion positively correlated to the number and scale of faults.Gas washing fractionation appears to have affected the hydrocarbon property,and as a result the diversity of the crude oils is markedly controlled by gas washing.In addition,the occurrence of waxy oil in this area may be resulted from multiple factors including gas washing,mixed filling and migration fractionation. | YANG ChuPeng GENG AnSong LIAO ZeWen SUN YongGe ZHANG LüHui | 2009 | Science China Earth Sciences2009，52，1： | 4 |
| 5 | The comparison of biomarkers released by hydropyrolysis and Soxhlet extraction from source rocks of different maturities显示文摘The Permian Dalong Formation(P2d) source rocks from the mature Guangyuan outcrop section and the overmature Wangcang outcrop section in Sichuan Basin were selected.The Soxhlet extraction and kerogen catalytic HyPy were conducted on the P2d source rocks.The biomarkers obtained by both methods were compared to discuss their difference and the influence extent of thermal maturation on covalently bound biomarkers.The results show that covalently bound biomarkers can hardly be correlated to the corresponding free biomarkers due to severe thermal alterations and/or interference of migrated hydrocarbons in both outcrop sections and thermal maturation have much lower influence on covalently bound biomarkers in kerogens than on free biomarkers in Soxhlet extracts.The application of HyPy in study of biomarker geochemistry can reduce the thermal maturation effect on biomarkers(Ro≤2.4%) to a greater extent and the interference of migrated hydrocarbons between interbedded layers.The covalently bound biomarkers released by HyPy are useful in the study of biomarker geochemistry and oil-source correlation on high-overmature source rocks. | WU LiangLiang LIAO YuHong FANG YunXin GENG AnSong | 2013 | Chinese Science Bulletin2013，58，3： | 4 |
| 6 | Kinetic study of the hydrocarbon generation from marine carbonate source rocks characterization of products of gas and liquid hydrocarbon显示文摘The kinetic parameters of hydrocarbon generation from the marine carbonate source rocks were determined and calibrated through kinetic simulating experiment. The kinetic parameters of hydrocarbon generation then were extrapolated to geological condition by using the relative software. The result shows that gaseous hydrocarbons (C_1, C_2, C_3, C_(4-5)) were generated in condition of 150℃ | GENG Xinhua GENG Ansong XIONG Yongqiang LIU Jinzhong ZHANG Haizu ZHAO Qingfang | 2006 | Chinese Science Bulletin2006，51，23： | 3 |
| 7 | Asphaltenes in oil reservior recovery显示文摘Asphaltene is one of the important compositions in oil reservoirs, while it is also a major factor that causes difficulties in oil recovery and oil post-processings. Up to date, study on asphaltenes in oil recovery is stili a bottleneck problem, in this paper, the advances of studies on asphaltenes are reviewed, and some directions for further studying are suggested. What is reviewed in the paper includes the precipitation studies of asphaltenes, the degradation studies of asphaltenes and the applications of asphaltene’s studying in oil recovery; furthermore, it is regarded as a promising direction to study the possible applications of asphaltene’s selectively decomposing by chemical reagents in oil recovery. | Zewen Liao Ansong Geng | 2000 | Chinese Science Bulletin2000，45，8： | 2 |
| 8 | Carbon isotopic compositions of individual terpenoids in heavy oils from Karamay oilfield显示文摘The carbon isotopic compositions of individual terpenoids in the heavy oils from the Karamay oilfield were determined by using the method of enrichment of terpanes with molecular sieve 13X and GC-IRMS technique. The terpanes, selectively enriched from the biodegraded oils with molecular sieve 13X, can meet the demand of GO-IRMS analysis. The carbon isotopic compositions of the hopanoids (δ13C-31.7‰—-37.8‰) infer that their main source is probably non-methanotrophic bacteria,and that the depositional environment of source rocks is a strongly reductive, rapidly depositional, and closed-semi-closed saline lagoon. | Yongqiang Xiong Ansong Geng Deguang Liu | 1999 | Chinese Science Bulletin1999，44，3： | 2 |
| 9 | Kinetic studies of asphaltene pyrolyses and their geochemical applications显示文摘 | Geng Ansong Liao Zewen | 2002 | Applied Geochemistry2002，17，12： | 1 |
| 10 | Oil-source correlation for the paleo-reservoir in the Majiang area and remnant reservoir in the Kaili area, South China显示文摘 | Fang Yunxin Liao Yuhong Wu Liangliang Geng Ansong | 2011 | J Asia Earth Sci2011，41，2： | 1 |
| 11 | Kinetic-simulating experiment combined with GC-IRMS analysis: Application to identification and assessment of coal-derlved methane from Zhongba Gas Field (Sichuan Basin, China) 显示文摘 | Xiong Yongqiang Geng Ansong Liu Jinzhong | 2004 | Chemical Geology2004，213，4： | 1 |
| 12 | Kerogen Pyrolysis in the Presence and Absence of Water and Minerals:Amounts and Compositions of Bitumen and Liquid Hydrocarbons显示文摘 | Pan Changchun Geng Ansong Zhong Ningning | 2009 | Fuel2009，88，： | 1 |
| 13 | Thermal cracking of n-octodecane and its geochemical significance显示文摘The mechanism of carbon isotopic fractionation for gaseous hydrocarbons is revealed by investigating the residual liquid hydrocarbons in laboratory pyrolysates of n-octodecane. The results indicate that cracking and polymerization in the relatively low temperatures and dispropor-tionation reactions leading to light hydrocarbons and pol-yaromatic hydrocarbons at high temperatures are probably causes for the carbon isotope reversal of gaseous hydrocarbons that is commonly observed in pyrolysis experiments. This study provides significant insight for quantitative modeling of natural gas δ13C values and aid in the identification and assessment of natural gases derived from oil cracking. | Yongqiang Xiong Haizhu Zhang Xinhua Geng Ansong Geng | 2004 | Chinese Science Bulletin2004，49，S1： | 1 |
| 14 | The investigation of characteristics of biomarker assemblages and their precursors in Damintun ultra-high wax oils and related source rocks 显示文摘 | Huang Yongsong Geng Ansong Fu Jiamo et aI | 1992 | Or- ganic Geochemistry1992，19，3： | 1 |
| 15 | Kinetic simulating experiment combined with GC-IRMS analysis: Application to identification and assessment of coal-derived gas显示文摘 | Geng Ansong Liu Jinzhong | 2003 | Organic Geochemistry2003，，： | 1 |
| 16 | Kineticsimulating experiment combined with GC-IRMS analysis: Application to identification and assessment of coalderived methane from Zhongba Gas Field (Sichuan Basin, China) 显示文摘 | Xiong Yongqiang Geng Ansong Liu Jingzhong | 2004 | Chemical Geology2004，213，： | 1 |
| 17 | Kinetic studies of asphaltene pyrolyses and their geochemical applications显示文摘 | Ansong Geng Zewen Liao | 2002 | Applied Geochemistry2002，17，： | 1 |
| 18 | Adsorption/occlusion characteristicsof asphaltenes: Some implications for asphaltene structural features显示文摘 | Liao Zewen Zhou Honggang Graciaa A Chrostowska A Creux P Geng Ansong | 2005 | Energy Fuel2005，19，1： | 1 |
| 19 | Different adsorption-occlusion properties of asphaltenes associated with their secondary evolution processes in oil reservoirs显示文摘 | Liao Zewen Geng Ansong Graciaa A Creux R Chrostowska A Zhang Yaxue | 2006 | Energy Fuel2006，20，3： | 1 |
| 20 | Saturated hydrocarbons occluded inside as- phaltene structures and their geochemical significance, as exemplified by two Venezuelan oils显示文摘 | Liao Zewen Geng Ansong Graciaa A Creux R Chrostowska A Zhang Yaxue | 2006 | Org Geochem2006，37，3： | 1 |
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