新疆石油地质

新疆石油地质 ›› 2006, Vol. 27 ›› Issue (5): 552-555.

• 油气勘探 • 上一篇    下一篇

柴达木盆地一里坪地区新近系油气成藏条件

姜桂凤, 孔红喜, 徐子远, 侯泽生, 蔡云兰, 李艳萍   

  1. 中国石油青海油田分公司勘探开发研究院, 甘肃敦煌 736202
  • 收稿日期:2005-12-29 修回日期:2005-12-29 出版日期:2006-10-01 发布日期:2020-10-20
  • 作者简介:姜桂凤(1966-), 女, 山东招远人, 高级工程师, 石油地质,(Tel) 0937-8934281(E-mail) jgfqh@petrochina.com.cn.

The Hydrocarbon Accumulation Conditions of Neogene in Yiliping Area of Qaidam Basin

JIANG Gui-feng, KONG Hong-xi, XU Zi-yuan, HOU Ze-sheng, CAI Yun-lan, LI Yan-ping   

  1. Research Institute of Exploration and Development, Qinghai Oilfield Company, PetroChina, Gansu, Dunhuang 736202, China
  • Received:2005-12-29 Revised:2005-12-29 Online:2006-10-01 Published:2020-10-20

PDF

158

摘要： 通过对一里坪地区的烃源岩、储盖层、圈闭等各项成藏关键因素分析,确定制约新近系油气藏形成的主控因素。认为,一里坪地区烃源岩主要为$N^{1}_{2}$层段和部分$N^{2}_{2}$层段暗色泥质岩,其有机质丰度相对较低,有机质类型以腐殖型为主,成熟门限为2 800 m; 储集层主要为粉砂岩,物性偏低; 圈闭主要为背斜、断背斜等。据构造演化史、沉积史、生烃史分析,确定新近系烃源岩主要生烃期与圈闭发育史较为匹配,形成“内储式原生油气藏”的成藏模式。确定出碱山和碱石山为近期勘探的目标。

关键词: 柴达木盆地, 烃源岩, 储集层, 圈闭, 成藏模式

Abstract: The dominating factors controlling hydrocarbon accumulation of Neogene are determined by analyses of the source-reservoircap rocks and traps in Yiliping area. The result shows that the source rock assumes dark mudstone in $N^{1}_{1}$ zone and $N^{2}_{1}$ zone, dominated by humic-type organic matter of relatively low abundance, maturity threshold depth of 2 800 m; the reservoir rock is characterized by siltstone; the traps are anticline and faulted anticline. The major hydrocarbon-generating stage of Neogene source rock well matches the period of trap formation, shaping the original hydrocarbon accumulation mode of internal storage, according to study of the structural evolution history, sedimentation history and hydrocarbon generation history. It is concluded that Jianshan and Jianshishan in this area could be regarded as exploration targets in the near future.

Key words: Qaidam basin, source rock, reservoir, trap, hydrocarbon accumulation mode

中图分类号: