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《Geochimica》 2010-02
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Geochemical characteristics of heavy oils from the east and west sides of Halahatang Depression,Tarim Basin,China:Exemplified by Oils of LG7 and DH1-6-9

LIAO Ze-wen1,ZHANG Lü-hui1,YANG Chu-peng1,ZHANG Hai-zu2,WANG Tong-shan3 and LU Yu-hong2 1.Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China;2.Research Institute of Petroleum Exploration and Development,Tarim Oilfield Company,Korla 841000,China;3.Research Institute of Petroleum Exploration and Development,PetroChina,Beijing 100083,China  
In the east side of Halahatang Depression,the Lungu area,Tarim Basin,a lot of marine heavy oils,including Tahe oilfields have been found,and some heavy oils from the northwestern side of the Depression were found,too.Many studies have been reported concerning the heavy oils from the east side of Halahatang Depression,while little was known for the heavy oils from the northwestern side of the Depression.This work studied the geochemical characteristics of heavy oils of LG7 (from the east side) and DH1-6-9 (from the west side),e.g.geochemical analyses of the compounds adsorbed/occluded inside asphaltenes of the oils.The results indicate that both oils experienced more than one charges of petroleum fluids.The first charge of the two sites has been derived from the same set of source rocks,which were heavily altered by the post biodegradation occurring in the oil reservoirs,whereas the later charge(s) were derived from different source rocks.The similar geochemical characteristics and accumulation processes indicate that more marine oils are expected to be found from the corresponding tectonic units in the northwestern side of Halahatang Depression.
【Fund】: 国家自然科学基金(40672091);; 国家重点基础研究发展计划项目(2006CB202303)
【CateGory Index】: P618.13
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Chinese Journal Full-text Database 1 Hits
1 ZHANG Chao-jun1,2,ZHOU Xin-yuan2,WANG Zhao-ming2,WANG Chang-xun2,LUO Xiu-yu2,LIU Yun-xiang2,LONG Wei-hua2 (1.Research Institute of Petroleum Exploration and Development,PetroChina,Beijing 100083,China; 2.Tarim Oilfield Company,PetroChina,Korla,Xinjiang 841000,China);The Geological Significance for Discovery of Lower Ordovician Source Rocks in Halahatang Area,Tarim Basin[J];Xinjiang Petroleum Geology;2008-05
Chinese Journal Full-text Database 1 Hits
1 CUI Hai-feng1,ZHENG Duo-ming2,TENG Tuan-yu1 (1.Research Institute of Petroleum Exploration&Development-Northwest,PetroChina,Lanzhou 730020,China; 2.Research Institute of Exploration and Development,Tarim Oilfield Company,PetroChina,Korla 841000,China);Petroleum geologic characteristics and exploration orientation in Halahatang Depression of Tabei uplift[J];Lithologic Reservoirs;2009-02
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