新疆石油地质

新疆石油地质 ›› 2007, Vol. 28 ›› Issue (3): 286-288.

• 油气勘探 • 上一篇    下一篇

塔中北斜坡志留系岩性油藏形成条件与勘探方向

杨海军1,2, 邬光辉1, 孙丽霞1, 黄广建1, 胡太平1   

  1. 1.中国石油 塔里木油田分公司 勘探开发研究院, 新疆 库尔勒 841000;
    2.中国地质大学(武汉) 资源学院, 武汉 430074
  • 收稿日期:2006-07-03 出版日期:2007-06-01 发布日期:2020-07-31
  • 作者简介:杨海军(1970-), 男, 河北卢龙人, 高级工程师, 在读博士研究生, 油气勘探与地质综合研究,(Tel) 0996-2172251(Email) yhjun701205@163.com.

Condition and Explorative Direction of Lithologic Reservoir of Silurian in Northern Slope of Tazhong Uplift

YANG Hai-jun1,2, WU Guang-hui1, SUN Li-xia1, HUANG Guang-jian1, HU Tai-ping1   

  1. 1. Research Institute of Exploration and Development, Tarim Oilfield Company, PetroChina, Korla, Xinjiang 841000, China;
    2. Institute of Natural Resources, China University of Geosciences, Wuhan, Hubei 430074, China
  • Received:2006-07-03 Online:2007-06-01 Published:2020-07-31

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摘要： 对塔中志留系的整体评价与综合研究表明,长期稳定的斜坡背景有利于岩性地层圈闭的形成,潮坪相沉积的砂泥岩薄互层是形成岩性圈闭的地质基础,多期油气充注与调整造成了普遍含油的格局,塔中志留系具有形成大面积、低丰度岩性油藏的地质条件。塔中志留系的勘探要突破局部构造控油的思路,把岩性油藏作为志留系的主要勘探对象;岩性上倾尖灭区是有利的成藏领域;东部志留系岩性相变带、地层超覆带是石油勘探的主战场。

关键词: 塔里木盆地, 塔中隆起, 志留系, 岩性油藏, 地质条件

Abstract: Based on the integral evaluation and composite study of Silurian system in Tazhong uplift, it is indicated that the long-period and stable development of the northern slope setting is favorable for the development of stratigraphic and lithologic traps, and the thin interlayer of sandstone and mudstone in tidal flat sediments is the geologic foundation for forming the lithologic trap. The multistage hydrocarbon accumulation and migration/adjustment create the framework of extensive distribution of hydrocarbons. Hence, the Silurian system in Tazhong uplift possesses the geologic conditions for shaping large-scale and low-abundance lithologic oil reservoirs. The study suggests that exploration of the Silurian must break through the idea of local structure controlling hydrocarbon accumulation. Lithologic reservoirs are the main exploration targets. The updip lithologic pinchout zone is the favorable domain for hydrocarbon accumulation. The facies-varied zone and stratigraphic onlap zone of the Silurian in eastern Tazhong area are the main directions for petroleum prospecting.

Key words: Tarim basin, Tazhong uplift, Silurian, lithological reservoir, geologic condition

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