35 3 2016 9 GLOBAL GEOLOGY Vol. 35 No. 3 Sept. 2016 1004 5589 2016 03 0785 05 130062 P618. 130. 2 A doi 10. 3969 /j. issn. 1004-5589. 2016. 03. 019 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 130062 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 1 2 2015-12-15 2016-05-11.
786 35 3 - - 4-1. 4 1 1. 1 4 1 800 ~ 3 600 m Ⅱ1 Ⅱ2 0. 7% ~ 2% - 5 6 3 7 1 1. 2 3 2 2. 1-1. 3-3 2. 2
3 787 Fig. 1 1 WE-trending seismic section in Sujiatun oilfield 6 1 Table 1 Oil property plane change in Sujiatun oilfield 8 S337 0. 758 3 1. 43 S333 0. 819 0 10. 74 S40 0. 822 1 8. 81 S1 0. 838 3 8. 48 8 1 2. 3 9 - - 2 /mpa S S27 0. 793 9 0. 18 S35 0. 806 6 0. 84 33X 0. 822 9 7. 16 S334 0. 862 0 30. 61
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