ISSN 1673-8217 CN 41-1388/TE
主管：中国石油化工集团有限公司 主办：中国石油化工股份有限公司河南油田分公司
伍家和. 2011: 准噶尔盆地中部1区块侏罗系三工河组隐蔽圈闭发育模式. 石油地质与工程, 25(04): 15-18+24+5.
引用本文: 伍家和. 2011: 准噶尔盆地中部1区块侏罗系三工河组隐蔽圈闭发育模式. 石油地质与工程, 25(04): 15-18+24+5.
shu
2011: Developmental model of subtle trap in Sangonghe formation of Jurassic source rocks in the block 1 in central part of Junggar basin. Petroleum Geology and Engineering, 25(04): 15-18+24+5.
Citation: 2011: Developmental model of subtle trap in Sangonghe formation of Jurassic source rocks in the block 1 in central part of Junggar basin. Petroleum Geology and Engineering, 25(04): 15-18+24+5.
shu

准噶尔盆地中部1区块侏罗系三工河组隐蔽圈闭发育模式

Developmental model of subtle trap in Sangonghe formation of Jurassic source rocks in the block 1 in central part of Junggar basin

    摘要
  • 摘要: 准噶尔盆地中部1区块三工河组二段是增储上产的主力层位,以隐蔽、调整型油气藏为主,勘探风险较大。应用沉积学与地球物理结合的方法研究认为主要勘探目的层侏罗系三工河组二段(J_1s_2)沉积背景与后期车-莫古隆起的演化是后期油气调整的主控因素。三工河组二段下亚段(J_1s_2~2)沉积环境主要为辫状河三角洲前缘亚相,上亚段(J_1s_2~1)为曲流河三角洲前缘亚相;沉积时受车-莫古隆起雏形——局部水下低凸影响砂体展布,沉积后又受车-莫古隆起掀斜调整改造作用,早期形成的储存于侏罗系的原生油藏也随车-莫古隆起的调整而改造,下亚段(J1s_2~2)辫状河道砂体叠置、砂体连通性好,油气逸散严重,上亚段(J_1s_2~2)砂泥交互沉积,受后期调整作用小。提出了缓坡远源相控+水下低凸控砂控圈模式,下亚段(J_1s_2~2)主要寻找构造(断块+低幅度背斜)油气藏为主,上亚段(J_1s_2~1)寻找岩性油气藏为主的勘探思路。

     

    Abstract: Member 2 sandbodies of Sangonghe formation is a main target layer of incerased reserves and is characterized by the subtle and adjustment reservoirs with high risk.In combination with the application from sedimentology and geophysics, the sedimentary environment of J1s2 and the evolution of Che-Mo Palaeo-uplift are considered to be the main controlling factors.The research indicated that the sedimentary environment of the lower member of J1s2 belongs to braided delta front and the upper member of it belongs to meandering delta front.In the end,the developmental models of subtle trap have been provided.

     

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