地学前缘 ›› 2012, Vol. 19 ›› Issue (1): 78-88.

• 论文 • 上一篇    下一篇

松辽盆地姚家组—嫩江组沉积演化与成藏响应

冯志强, 张顺, 付秀丽   

  1. 1. 中国石油大庆油田有限责任公司， 黑龙江 大庆 163712
    2. 大庆油田有限责任公司 勘探开发研究院， 黑龙江 大庆 163712
  • 收稿日期:2011-11-20 修回日期:2011-12-15 出版日期:2012-01-10 发布日期:2012-01-10
  • 作者简介:冯志强（1964—），男，1999年获英国里丁大学博士学位，教授级高级工程师，主要从事油气勘探地质研究工作。E-mail: fengzhiqiang@petrochina.com.cn
  • 基金资助:

    国家重点基础研究发展计划“973”项目“白垩纪地球表层系统重大地质事件与温室气候变化”（2006CB701404）；国家重点基础研究发展计划“973”项目“火山岩油气藏的形成机制与分布规律”（2009CB219308）；国家重点基础研究发展计划“973”项目“松辽盆地晚期构造活动的热示踪研究”（40872097）

Depositional evolution and accumulation response of YaojiaNenjiang Formation in Songliao Basin.

  1. 1. Daqing Oilfield Corporation Ltd., PetroChina, Daqing 163712, China
    2. Daqing Oilfield Exploration and Development Research Institute, Daqing 163712, China
  • Received:2011-11-20 Revised:2011-12-15 Online:2012-01-10 Published:2012-01-10

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摘要：

松辽盆地姚家组—嫩江组是一套完整的基准面升降旋回沉积地层，嫩江组二段底部最大湖泛面形成了盆地范围内稳定分布的油页岩，不仅是层序及地层对比的标准界面，而且成为重要的烃源岩层和盖层。姚家组及嫩江组一段是湖进形成的大型湖泊与退积型三角洲沉积，嫩江组二段到五段是强制性水退形成的大型湖泊与进积三角洲沉积；在湖进期嫩江组一段长轴物源方向发育大型重力流水道及末端浊积扇沉积，在嫩江组二段强制性水退环境下进积型三角洲前方发育大型滑塌扇沉积；储集层是湖进湖退过程中形成的大型三角洲复合体，以分流河道、河口坝及席状砂体为特征，这些砂体向湖盆中心延伸楔入湖相泥岩及成熟烃源岩中，形成良好的生储盖组合关系，特别是盆地长轴物源方向发育的大型三角洲复合体成为油藏集中发育的良好场所，是松辽盆地成为巨型陆相含油气盆地的重要地质条件，同时重力流水道及滑塌扇体也具有形成岩性油气藏的有利条件，是不可忽视的勘探领域。

关键词: 姚家组与嫩江组, 沉积演化, 油气分布, 松辽盆地

Abstract:

YaojiaNenjiang Formation in Songliao Basin is an integrated set of deposit stratum cycle with base level rising and falling. The oil shale distributed steadily in the whole basin were formed during the maximum flooding surface period at the bottom of K2n2. The oil shale is not only the standard interface of sequence and stratigraphic correlation, but also the important source rock and cap rock. Sediments of K2y and K2n1 are largescale lacustrine and retrograded delta deposition formed in the lacustrine transgressive period. Sediments from K2n2 to K2n5 are largescale lacustrine and progradation delta deposition formed in the forced lacustrine regressive period. Largescale turbidite channel and tail turbidite fan were developed in the long axis direction of the material source during the progressive lacustrine period of K2n1. Largescale slump fan deposition were developed on the top of the progradation delta during the forced lacustrine regressive period of K2n2. The reservoir layer is a complex largescale delta formed during the transgressive and regressive period, which has the characteristic of the sandbody in distributary channel, mouth bar and sheet sand. The sandbodies extended to the lacustrine center and went into the mudstone and mature source rock, thus formed a good sourcereserviorcap relationship. The favorable places for oil pools are mainly developed in the largescale complex delta in the long axis direction of the material source. It is an important geological condition for mega petroliferous basin with continental facies. The gravity current channel and slump fan are also good conditions for forming the lithological pool, which are very important exploration fields.

Key words: YaojiaNenjiang Formation (K2y, K2n), depositional evolution, oil and gas distribution, Songliao Basin

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