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1
題名:Relationships between Organic Material and Thermal Maturity Derived from Coal and C-Shale Samples    
著者:Louis L. TsaiHuey-Jane HsiehHsien-Tsung LeeLi-Chung Sun
出版地區:台灣
出版城市:台北市
學科:地球科學
關鍵字:Organic material ; Thermal maturity ; Coal
刊名:Terrestrial, Atmospheric and Oceanic Sciences
卷期:19卷5期(2008.10)
頁碼:489-495
語言:英語
摘要: 英文摘要PDF

The purpose of this study is to characterize the relationship between organic material and thermal maturity during the process of evaluation of hydrocarbon potential. Samples studied include Miocene high volatile bituminous coal and coaly shale collected from outcrops and exploration wells in Hsinchu-Miaoli area, NW Taiwan, density centrifuge separated macerals, bituminous coal and anthracite from China, in addition to Woodford and Green River oil shale from the United States. Maceral composition analysis, elemental analysis, vitrinite reflectance measurement and Rock-Eval pyrolysis were performed for evaluation. The results of study show that: 1) coal samples from the Shiti Formation (middle Miocene) exhibit more vitrinite and less mineral matter contents than samples from the Nanchuang Formation (upper Miocene); H% is increased in exinite-enriched maceral mixtures with density <1.25 g cm-3, after density centrifuge separation. 2) A positive linear correlation between Tmax and Ro illustrates both Rock-Eval pyrolysis and vitrinite reflectance can be used as indicators of thermal maturity. 3) From the plot of H/C ratio vs. vitrinite reflectance, even though the depositional environments were different in Taiwan and China, their organic micelles exhibit a similar trend in the process of thermal maturation. As a whole, the curve has a turning point at Ro=0.5% and H/C=0.1 (atomic ratio 1.2) in this study. 4) Arather good correlation between S2 and TOC of samples studied indicates the contribution of S2 from TOC. 5) The highest HI occurred in certain maturities (Tmax and Ro) of samples studied, and not in the stages of less maturity or over-maturity. 6) Two different linear trends were observed in the cross plot of S1 vs. S2. Field outcropped shale or C-shale exhibits a steeper slope compared to that of coal samples which can be attributed to the compositional difference in their organic material. 7) A rather strong positive correlation for H% vs. S2 illustrates the contribution of H-containing macerals, especially exinite. As a result of this study, we expect to promote evaluation techniques for HC exploration; for instance, the development or improvement of evaluation methods for source rocks, reservoirs, structural evolution, and thermal maturity. Evaluations are expected to give more detail regarding local conditions, and be better quantified and more accurate.


    

本卷期目次
Terrestrial, Atmospheric and Oceanic Sciences 19卷5期 (2008.10)
Link between Crustal Magnetization and Earthquakes in Taiwan/ Shu-Kun HsuYi-Ching YehChung-Liang LoAndrew Tien-Shun LinWen-Bin Doo
Effect of Surface Geology on Ground Motions: The Case of Station TAP056-Chutzuhu Site/ Kuo-Liang WenChe-Min LinHsien-Jen ChiangChun-Hsiang KuoYu-Chih HuangHsin-Chieh Pu
Seismological Studies for Tensile Faults/ Gwo-Bin Ou
Fault Zone Resistivity Structure and Monitoring at the Taiwan Chelungpu Drilling Project (TCDP)/ Chih-Wen ChiangMartyn J. UnsworthChow-Son ChenChien-Chih ChenAndrew Tien-Shun LinHan-Lun Hsu
Ionospheric GPS TEC Anomalies and M?5.9 Earthquakes in Indonesia during 1993-2002/ Sarmoko SarosoJann-Yenq LiuKatsumi HattoriChia-Hung Chen
Relationships between Organic Material and Thermal Maturity Derived from Coal and C-Shale Samples/ Louis L. TsaiHuey-Jane HsiehHsien-Tsung LeeLi-Chung Sun
Decadal Oscillation of Fall Temperature in Taiwan/ Jau-Ming ChenFang-Chung LuChing-Feng Shih
Measurements and Mesoscale Modeling of Autumnal Vertical Ozone Profiles in Southern Taiwan/ Yen-Ping PengKang-Shin ChenJie-Chung LouShih-Wei HwangWen-Cheng WangChia-Hsiang LaiMong-Yu Tsai
The Initial Results of the Chung-Li Dynasonde for RF Environment Surveillance and Ionospheric Observations/ Tung-Yuan HsiaoLung-Chih TsaiFrank Tom Berkey
Sediment Budget in the Taiwan Strait with High Fluvial Sediment Inputs from Mountainous Rivers: New Observations and Synthesis/ Shuh-Ji KaoSen JanShih-Chieh HsuTsung-You LeeMin-Han Dai
 
   
 
   

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