新疆石油地质

新疆石油地质 ›› 2009, Vol. 30 ›› Issue (2): 168-170.

• 油气勘探 • 上一篇    下一篇

塔里木盆地志留系成藏地质条件与油气勘探前景

王清华1, 唐子军2, 赵福元1, 朱永峰1, 李辉1   

  1. 1.中国石油 塔里木油田分公司,新疆 库尔勒,841000;
    2.中国石油 勘探开发研究院,北京 100083
  • 收稿日期:2008-08-21 出版日期:2009-04-01 发布日期:2020-08-25
  • 作者简介:王清华（1969-）,男,湖北潜江人,高级工程师,博士,石油地质, （Tel）0996-2175440.

Petroleum Accumulation Geologic Condition and Explorative Prospect of Silurian in Tarim Basin

WANG Qing-hua1, TANG Zi-jun2, ZHAO Fu-yuan1, ZHU Yong-feng1, LI Hui1   

  1. 1. Tarim Oilfield Company, PetroChina, Korla, Xinjiang 841000, China;
    2. Reserch Institute of Petroleum Exploration and Development,PetroChina Beijing 100083, China
  • Received:2008-08-21 Online:2009-04-01 Published:2020-08-25

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摘要： 塔里木盆地志留系分布面积大,油气显示丰富,是寻找大油气田的重要领域。随着勘探程度的不断提高,地层岩性油气藏已成为志留系主要的找油方向,目前获工业油气流的层位主要集中在柯坪塔格组上段。有效储集层主要为形成于潮坪、滨岸及三角洲环境的石英含量大于 65％的砂岩。海平面升降变化造成的多次海进、海退旋回,有利于多套储盖组合及地层岩性圈闭的形成。凹陷腹地可能存在保存较好的原生古油藏。燕山–喜马拉雅运动期烃类的再次充注,形成塔北不整合遮挡和塔中地层超覆等非构造油气藏,油气勘探前景广阔。

关键词: 塔里木盆地, 志留系, 成藏地质条件, 非构造油气藏, 油气勘探前景

Abstract: The Silurian system in Tarim basin is an important domain for exploration of big oil-gas field for its large area and enriched oil-gas shows. With the increase of exploration extent, stratigraphic-lithologic hydrocarbon reservoirs have already become leading aspect for finding oilfield of it. At present, the commercial producing horizons mainly focus on the upper member of Kepingtag formation. The effective reservoir rock is sandstone with quartz content of over 65% formed in tide-flat, shore and delta environment. The study shows that multiple transgression and regression cycles caused by the fluctuating changes of sea level are favorable to formation of multi-set reservoir-cap rock assemblages and stratigraphic-lithologic traps; well preservable primary paleo-oil reservoir may exist in the sag hinterland; recharging of hydrocarbon during Yanshan-Hilalayan movement forms the non-structural reservoirs of unconformity barrier in Tabei area and stratigraphic overlap in Tazhong area, indicating its broad exploration prospect.

Key words: Tarim basin, Silurian, hydrocarbon accumulation, geologic condition, non-structural reservoir, exploration prospect

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