西南石油大学学报(自然科学版)

• 地质勘探 • 上一篇    下一篇

六盘山盆地白垩系油气地质条件及有利区预测

谢青1 *,杨兴科1,江宽2,杨龙伟1   

  1. 1. 长安大学地球科学与资源学院,陕西西安710054
    2. 中国石油西部管道兰州输气分公司,甘肃兰州730070
  • 出版日期:2016-06-01 发布日期:2016-06-01
  • 通讯作者: 谢青,E-mail:xieqingsunny@163.com
  • 基金资助:

    中国地质调查局地质调查工作资金资助项目(12120113039900);中央高校基金“优秀博士论文”资助项目(310827165013)。

Petroleum Geological Condition of Cretaceous in Liupanshan Basin#br# and Favorable Areas Prediction

XIE Qing1*, YANG Xingke1, JIANG Kuan2, YANG Longwei1   

  1. 1. School of Earth Science and Resources,Chang′ an University,Xi′ an,Shaanxi 710054,China
    2. West Pipeline Gas Company,PetroChina,Lanzhou,Gansu 730070,China
  • Online:2016-06-01 Published:2016-06-01

摘要:

六盘山盆地位于华北地块西南缘与祁连秦岭构造带接合部位,构造系统复杂。据野外调研,白垩系油气显
示分布较多,初步断定盆地具有产油潜力。针对整个盆地勘探程度低,研究资料之间差异大,勘探目的层确定存在分
歧的现状,开展了对六盘山盆地白垩系烃源岩层发育状况、储层及成藏组合特征的研究和评价。利用野外调研、实验
分析及重磁资料等方法获得了突破性的认识:李洼峡组属于III 类中等储层,马东山组和乃家河组属IV 类差储层,古
近系发育大套砂岩可作为白垩系油气的有利储层;烃源岩有机质类型为腐泥混合型,热演化程度高,具备一定的生
烃条件。并预测了3 类勘探区和5 个有利局部构造部位。这次的研究结果对后期六盘山盆地油气勘探具有重要的指
导意义。

关键词: 储层特征, 烃源岩, 有利区预测, 白垩系, 六盘山盆地

Abstract:

Liupanshan Basin is located in the joint of southwestern margin of North China block and Qilian - Qinling structure
belt. It′s under a complex system. According to field investigation,there distribute much oil and gas of Cretaceous,which indicates
that the basin has oil production potential. But the entire basin is of low degree of prospecting,and great differences exist
in research data and in determination of target layers of exploration. Using field investigation,experimental analysis methods
and gravity-magnetic materials,in-depth research and evaluation are made on development situation of the hydrocarbon source
rock and characteristics of reservoir and reservoir−forming combination in Cretaceous reservoir,and we get the breakthrough
findings:Liwaxia group belongs to class III medium reservoir,and Madongshan and Naijiahe groups belong to class IV the
poor reservoir;large sets of sandstone development in Paleogene can be a favorable Cretaceous reservoir of oil and gas;organic
matter of the hydrocarbon source rock is of sapropelic-mixed type with high degree of thermal evolution,and is favorable for
hydrocarbon generation. Three kinds of exploration areas and five favorable local tectonic positions have been predicted. The
research results have an important guiding significance to further exploration of oil and gas in Liupanphan Basin.

Key words: reservoir property, hydrocarbon source rock, favorable area prediction, Cretaceous, Liupanphan Basin

中图分类号: