新疆石油地质

新疆石油地质 ›› 2005, Vol. 26 ›› Issue (3): 253-255.

• 油气勘探 • 上一篇    下一篇

石南油气田J2t2砂层组沉积相特征

张有平1, 凌支虎2, 帕尔哈提2, 刘文峰1, 孙宇1   

  1. 1.中国石油 新疆油田分公司 勘探开发研究院,新疆 克拉玛依 834000;
    2.新疆石油学院 勘探开发系,乌鲁木齐 830000
  • 收稿日期:2004-07-08 出版日期:2005-06-01 发布日期:2020-11-23
  • 作者简介:张有平(1963-),男,山东寿光人,高级工程师,石油地质,(Tel)13709901633

Characteristic of Sedimentary Facies of Jurassic Toutunhe Formation (J2t2) in Shinan Field

ZHANG You-ping1, LING Zhi-hu2, Parhat2, LIU Wen-feng1, SHUN Yu1   

  1. 1. Research Institute of Exploration and Development, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000,China;
    2. Department of Exploration and Development, Xinjiang Petroleum Institute, Urumqi, Xinjiang 830000, China
  • Received:2004-07-08 Online:2005-06-01 Published:2020-11-23

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摘要： 在岩心详细观察的基础上,结合测井资料及综合录井资料,对石南油气田侏罗系头屯河组J2t2砂层组的沉积特征、相标志、沉积相微相划分进行了研究。研究结果认为,J2t2储集层的岩石类型为岩屑砂岩,其成分成熟度偏低,反映了沉积速度快及沉积物母岩成分复杂;由于无二元结构、具有很大的宽深比和河道与心滩位置不固定等特征,其沉积相为辫状河流相沉积,可划分为河床亚相和泛滥平原亚相,进一步分为河道沉积、心滩、天然堤、岸后湖、洪泛平原和决口扇等微相,并指出它们在纵向上的沉积序列特征及砂体展布特征。

关键词: 准噶尔盆地, 侏罗系, 沉积相, 沉积类型, 沉积特征

Abstract: The detailed description of core from Shinan oilfield in Junggar basin is presented. The study of sedimentary microfacies and facies marker classifications is made by means of sedimentary characteristic of Jurassic Toutunhe formation (J2t2), integrated with well logs and comprehensive logging data. The results show that the rock type of J2t2 is dominated by lithic sandstone with lower composition maturity, reflecting fast sedimentary velocity and complex parent rock composition. For free bi-element structure, the formation features big width-depth ratio and varied location of channel and river island. Its braided fluvial facies is divided into bed subfacies and flood-plain subfacies followed by such microfacies as channel deposit, river island, natural barrier, bank lakelet, fluvial flooding plain and crevasse splay, including their vertical sedimentary sequence features and distribution.

Key words: Junggar basin, Jurassic, sedimentary facies, sedimentary type, sedimentary characteristic

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