Main controlling factors of hydrocarbon accumulation in Sujiatun oilfield of Lishu rift and its regularity in enrichment

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1 GLOBAL GEOLOGY Vol. 35 No. 3 Sept P A doi /j. issn Main controlling factors of hydrocarbon accumulation in Sujiatun oilfield of Lishu rift and its regularity in enrichment QU Qian-zhong Northeast Oil-gas Branch SINOPEC Changchun China Abstract Combining the spatial distribution characteristics of oil and gas reservoirs in Sujiatun area of Lishu rift the authors study the control action of hydrocarbon source rock- trap- conducting-and preservation conditions to hydrocarbon accumulation. The research shows that the tectonic and sedimentary evolution characteristics control the spatial distribution of the quality source and reservoir tectonic setting and different conducting conditions control the migration direction and result in obvious difference among oil gas traps at different tectonic position. And the various differential accumulation modes work together to lead to traps capture and preserve oil and gas sectionally and control the plane enrichment degree of oil and gas. Key words hydrocarbon source rocks conducting conditions main controlling factors differential accumlation 0 m

2 ~ m Ⅱ1 Ⅱ2 0. 7% ~ 2%

3 3 787 Fig. 1 1 WE-trending seismic section in Sujiatun oilfield 6 1 Table 1 Oil property plane change in Sujiatun oilfield 8 S S S S /mpa S S S X S

4 Gas Technology Fig. 2 Oil-gas dominant migration path in Sujiatun oilfield J WANG Ying CHENG Ri-hui WANG Gong-sheng et al. Yingcheng Formation sequence stratigraphy and depositional system of Shiwu oilfield in Lishu fault depression Songliao Basin J. Global Geology J YANG Te-bo WANG Hong-yu FAN Tai-liang et al. Sedimentary characteristics of Yingcheng Formation in Sujiatun area Lishu rift in Songliao Basin J. Oil & Gas Geology J HAN Jiao-yan HUANG Dang-wei XU Hong-bo. Sedimentary and reservoir characteristics of Yingcheng Forma- 10 tion in Sujiatun area Lishu faulted sag J. Inner Mongolia Petrochemical Industry J WANG De-hai GUO Feng REN Guo-xuan et al. The relationship between faults and oil-gas migration and reservoiring in the southeastern uplift of the Songliao Basin J. Petroleum Geology & Experiment J ZHAO De-li XIAO Xue WEI Fen-liang et al. Analysis of main controlling factor of Yingcheng Formation in the north of Shiwu faulted sag J. Journal of Oil and 819

5 C 819 Technology M. J AI Shang-jun XU Yun-xin GUO Dian-jun et al. LI Hong-ge LI BEN-cai HAN Long et al. Geometric Geological study of sandstone oil field development feature of No. 2 fault in Yitong graben and its relation to M. Beijing Petroleum Industry Press oil-gas J. Oil Geophysical Prospecting 檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿 the Tongdian-Weishan fault J. Seismology and Geology J JIN Dong-chun CUI Tian-ri. Applying geophysical 16. methods for detecting buried faults J. Global Geology J WANG Feng XU Xi-wei ZHENG Rong-zhang. Study C / / CHENG Shao-ping. A theoretical problem in determining on Holocene strike-slip rates of the middle Altyn Tagh fault by terraces offset measurement J. Seismology and Geology the lateral displacements for the fault terraces C / / Research on Active Fault 1 Beijing Seismological Press J WANG Feng XU Xi-wei ZHENG Rong-zhang et al. J. Late quaternary slip-rates on the Altyn Tagh fault west to REN Jun-jie ZHANG Shi-min HOU Zhi-hua et al. the Qarqan river J. Seismology and Geology Study of late quaternary slip rate in the mid-segment of 檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿 J. and Recovery Efficiency GAO Dong. Petroleum system in Shiwu faulted sag and a- nalysis of exploration prospect J. Geophysical Prospecting for Petroleum J ZHANG Ting-ting YU Yun-liang HAN Jiao-yan et al. Analysis of main controlling factor on oil reservoir on Shiwu oilfield J. Global Geology J LU Xue-song JIANG You-lu WU Wei. Re-understanding of fault unsealing mechanism J. Petroleum Geology 9. J LIU Hua JIANG You-lu CAI Dong-mei et al. Physical properties and influence factors of crude oil from Paleogene in Dongying Sag J. Petroleum Geology and Recovery Efficiency J LIU Jing-jiang LIU Chi-yang WANG Zhen-liang et al. Another type of oil and gas differential accumulation differential dissolution J. Earth Science Frontiers

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