西南石油大学学报(自然科学版) ›› 1999, Vol. 21 ›› Issue (2): 36-40.DOI: 10.3863/j.issn.1000-2634.1999.02.10

• 地质勘探 • 上一篇    下一篇

中国南方天然沥青、油气苗分布与找油气关系

张学玉1 李国建1   

  1. 1.中国新星石油总公司西南石油局地质研究院,四川 成都 610081
  • 收稿日期:1998-12-03 修回日期:1900-01-01 出版日期:1999-04-20 发布日期:1999-04-20

THE RELATIONSHIP BETWEEN DISTRIBUTION OF NATURAL ASPHALT, OIL AND GAS SEEPAGE AND EXPLORATION IN SOUTH CHINA

Zhang Xue-yu1 Li Guo-jian1   

  1. Southwest Petroleum Bureau,China New Star Petroleum Corporation
  • Received:1998-12-03 Revised:1900-01-01 Online:1999-04-20 Published:1999-04-20

摘要:

从中国南方地表广泛分布的天然沥青、油气苗的产出特征、水化学性质及沥青演化阶段入手,结合区域构造、热作用、保存条件与区内已知的油气田对比剖析,对除四川盆地已知油气田以外的中古生界地层裸露区的断拗进行保存条件及地覆构造研究,结果表明:寻找保存条件相对较好,热作用适中的地带进行勘探,可能发现断层圈闭、断高、生物礁气藏以及新生界构造造成岩性圈闭的次生气藏等;在那些保存条件好的地带,可能发现断层圈闭及潜伏生物礁气藏;但在广泛古生界地层裸露区,特别是碳酸岩发育的地带,普遍见天然沥青、油气苗及张性断裂,是找油气的不利区域。

关键词: 天然沥青, 油气苗, 油气分布, 断层圈闭, 气藏, 中国南方

Abstract:

Based on the extensive surface natural asphalt, oil and gas seepage hydro-chemical property and asphalt evolution stage, integrated with regional tectonic, thermal degradation, preservation condition and the correlation of known oil and gas field, it is pointed out the preservation and potential structure study should be done on the fault-depression at Mesozoic and Paleozoic outcrop areas. It is in the area with good preservation and thermal action is procreating that fault trap and organic reef gas pool will be found. It is not favorable area to find gas field in the area, which the natural asphalt commonly occurs and oil and gas seepage and extensional fracture are developed.

Key words: natural asphalt, hydrocarbon seepage, oil and gas distribution, fault tram, gas reservoir, Southern China

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