石油与天然气地质 ›› 2004, Vol. 25 ›› Issue (4): 393-399.doi: 10.11743/ogg20040406

• 油气地质 • 上一篇    下一篇

松辽盆地岩性油藏形成条件与分布规律

杨玉峰1,2   

  1. 1. 中国石油石油勘探开发研究院,北京 100083;
    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:2004-06-14 出版日期:2004-08-25 发布日期:2012-01-16
  • 基金项目:

    国家"十五"科技攻关项目(2001BA605A-08-01)

Formation conditions and distribution of lithologic pools in Songliao basin

Yang Yufeng1,2   

  1. 1. Exploration, and Development Research Institute, PetroChina, Beijing;
    2. Exploration and Development Research Institute, Daqing Oilfield Company, Daqing, Heilongjiang
  • Received:2004-06-14 Online:2004-08-25 Published:2012-01-16

PDF (PC)

407

被引次数

90

摘要：

松辽盆地中浅层大型坳陷湖盆河流-三角洲、湖泊沉积体系形成的砂泥岩薄互层决定了其具有形成大面积岩性油藏的地质条件。纵向上,由于各时期基准面升降造成可容空间在不同时期差别较大,因此发育的砂体类型也有一定的差别。由于储层埋藏深度以及与烃源岩的相对位置不同,各含油组合岩性油藏成藏条件与分布规律也存在一定的差异。断层在岩性油藏成藏过程中起很重要的作用,它一方面是形成断层-岩性复合圈闭的主要要素,同时又是油气进入岩性圈闭成藏的主要运移通道。平面上,岩性油藏的类型受构造部位和砂岩的发育程度控制。凹陷中三角洲外前缘相带主要形成岩性油藏,凹陷周边是各种隐蔽油气藏发育的主要地区。

关键词: 中、浅层, 岩性油藏, 主控因素, 分布规律, 松辽盆地

Abstract:

Thin sandstone and mudstone interbed, deposited in lacustrine river-deltaic enviroment, is the necessary geologic condition of lithologic pool formation in the large, shallow-middle seated depressions, Songliao basin. Since the sedimentary accommodation, caused by the changes of base level, has a great difference in geologic time, the types of sand body have vertically a certain difference. Because the buried depth of reservoir rocks and relative position of reservoir rocks with source rocks are various, the formation condition and distribution of lithologic pools have also a certain difference in different plays. Fault plays an important role in the formation of lithologic pools, which is not only the basic attribute in the formation of composite fault-lithologic trap but also the major migration path of oil and gas into lithologic pools. In the areal extent, types of lithologic pool are controlled by structure position and sand body development. The lithologic pools are mainly developed in the delta-frontal facies belt in the large depressions, whereas the subtle oil and gas pools are mainly distributed in the periphery of the depressions.

Key words: shallow-middle seated strata, lithologic oil pool, main control factor, distribution feature, Songliao basin

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