石油与天然气地质 ›› 2001, Vol. 22 ›› Issue (1): 72-74.doi: 10.11743/ogg20010117

• 油气空间 • 上一篇    下一篇

千米桥潜山构造凝析气藏的初步分析

姜平   

  1. 大港油田集团地质勘探开发研究院, 天津300280
  • 收稿日期:2000-10-24 出版日期:2001-03-25 发布日期:2012-01-16

ANALYSIS OF CONDENSATE GAS POOLS IN QIANMIQIAO BURIED HILL

Jiang, Ping   

  1. Institute of geological Exploration and Development, Dagang Oilfields Company, Tianjin
  • Received:2000-10-24 Online:2001-03-25 Published:2012-01-16

PDF (PC)

885

被引次数

9

摘要：

千米桥潜山构造位于黄骅坳陷北大港构造带,千米桥潜山构造是在中生代的褶皱-逆冲作用的基础上经历伸展正断作用后形成的.该油气藏为凝析油气藏,油源主要来自板桥凹陷沙河街组三段烃源岩.油气藏含蜡量高,甲烷碳同位素具反转现象,说明其为多期成藏的产物.气侵作用是千米桥潜山气藏形成的主要原因,烃源岩在成熟阶段早期生成的原油以油相形式运移,首先进入千米桥潜山奥陶系储集层中,成熟阶段中期,以气相形式运移形成气藏.

关键词: 油气藏, 奥陶系, 气侵, 千米桥潜山

Abstract:

Qianmiqiao buried hill in Banqiao structural belt of Huanghua Depression was formed by stretch-faulting on the basis of fold-obduction.The hydrocarbon pool of the study area is a condensed oil-gas pool, the source rock is the third member of Shahejie Formation. The wax content of the crude oil is high, its methane carbon isotope could be reversed,indicating its multi-stage pool-forming origin. Gas invasion was the main cause of the pool's formation. Crude oil generated in early maturation stage migrated into the Ordoviciom reservoir of the buried hill first,then gas generated in mid maturation stage migrated in gas phase into the reservoir and formed the pool.

Key words: oil and gas pool, Ordovician System, gas invasion, Qianmiqiao buried hill

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