宿雯,杨海风,揣媛媛,等. 渤海南部缓坡带新近系油气运移模式——以垦利9油田群为例[J]. 海洋地质前沿,2020,36(11):69-76. DOI: 10.16028/j.1009-2722.2020.144
    引用本文: 宿雯,杨海风,揣媛媛,等. 渤海南部缓坡带新近系油气运移模式——以垦利9油田群为例[J]. 海洋地质前沿,2020,36(11):69-76. DOI: 10.16028/j.1009-2722.2020.144
    SU Wen, YANG Haifeng, CHUAI Yuanyuan, ZHANG Hongguo, HU Zhiwei. NEOGENE HYDROCARBON MIGRATION AND INSPIRATION IN THE GENTLE SLOPE BELT, SOUTHERN BOHAI SEA: A CASE FROM KENLI 9 OILFIELD GROUP[J]. Marine Geology Frontiers, 2020, 36(11): 69-76. DOI: 10.16028/j.1009-2722.2020.144
    Citation: SU Wen, YANG Haifeng, CHUAI Yuanyuan, ZHANG Hongguo, HU Zhiwei. NEOGENE HYDROCARBON MIGRATION AND INSPIRATION IN THE GENTLE SLOPE BELT, SOUTHERN BOHAI SEA: A CASE FROM KENLI 9 OILFIELD GROUP[J]. Marine Geology Frontiers, 2020, 36(11): 69-76. DOI: 10.16028/j.1009-2722.2020.144

    渤海南部缓坡带新近系油气运移模式以垦利9油田群为例

    NEOGENE HYDROCARBON MIGRATION AND INSPIRATION IN THE GENTLE SLOPE BELT, SOUTHERN BOHAI SEA: A CASE FROM KENLI 9 OILFIELD GROUP

    • 摘要: 渤海南部缓坡带新近系属于远源成藏,运移路径复杂限制了勘探成效。利用垦利9油田群丰富的钻井资料,结合物理模拟实验、地球化学等手段,明确了渤海南部缓坡带明下段油气运移路径及其控藏作用。研究表明,馆陶组顶部富砂段与明下段底部富泥段组合形成横向输导体系;馆陶组输导层顶面圈闭充当明下段油气中转站,圈闭保存能力控制了明下段的油气富集特征;新近系属于未固结—弱固结地层,断裂带基本不发育裂缝,油气垂向运移能力主要受到卷入断裂带中砂岩含量的控制;明下段成藏是油气经历横向输导与垂向运移相互配合的结果。蓬莱A构造明下段钻遇高丰度油藏,证明了该模式的正确性。

       

      Abstract: Oil and gas accumulation in gentle slope belt is under the control of remote source model in which migration conditions play key roles. Based on the abundant data from the Kenli 9 oilfield, using physical simulation and geochemical approaches, study on the hydrocarbon migration model on gentle slope is carried out and the accumulation-controlling factors are studied in this paper. It is concluded that the sandy member on the top of Guantao Formation and the muddy member on the bottom of Minghuazhen Formation made up the lateral migration passage; regional accumulation on the slope was determined by the traps on the top of passage and the hydrocarbon transfer stations; fractures were not developed in poorly consolidated- unconsolidated rocks, and vertical migration capability was related to the sandstone near the fault zone rather than the activity intensity; reservoirs in the Minghuazhen Formation were controlled by lateral and vertical migrations. Under the guidance of the new results, great success has been achieved in the shallow hydrocarbon exploration on Penglai A structure, which proved the accuracy of the new model.

       

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