新疆石油地质

新疆石油地质 ›› 2008, Vol. 29 ›› Issue (3): 327-330.

• 油气勘探 • 上一篇    下一篇

塔中Ⅰ号坡折带奥陶系礁滩体油气藏的成藏特点

陈利新1, 杨海军1,2, 邬光辉1, 韩建发1,2, 蔡春芳3, 翟姝玲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.中国地质大学资源学院, 武汉430074;
    3.中国科学院地质与地球物理研究所, 北京100029
  • 收稿日期:2007-09-26 发布日期:2020-08-19
  • 作者简介:陈利新(1978-), 男, 满族, 辽宁开原人, 硕士, 油气田开发,(Tel)0996-2173149(E-mail)upcclx@126.com.

Characteristics of the Ordovician Reef-Shoal Reservoir in Tazhong No.1 Slope-Br eak Zone,Tarim Basin

CHEN Li-xin1, YANG Hai-jun1,2, WU Guang-hui1, HAN Jian-fa1,2, CAI Chun-fang3, ZHAI Shu-ling1   

  1. 1. Reservoir Institute of Exploration and Development, Tarim Oilfield Company, PetroChina, Korla, Xinjiang 841000, China;
    2. Faculty of Energy Resources, China University of Geosciences, Wuhan, Hubei 430074, China;
    3. Institute of Geology and Geophysics, CAS, Beijing 100029, China
  • Received:2007-09-26 Published:2020-08-19

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摘要： 塔里木盆地塔中Ⅰ号坡折带奥陶系油气田是我国第一个以礁滩体为储集体的大油气田。该油气田不同井的测试产量和气油比差异较大, 油气性质复杂, 既有正常油也有凝析油, 天然气中普遍含有H2S, 非烃气含量在不同井区变化大。油气藏研究表明, 北部为富气、南部为富油, 不同性质的油和气分段性分布, 油气主要来源于寒武系, 喜马拉雅运动期的大规模气侵和良好的保存条件是形成奥陶系大油气田的主要原因。

关键词: 塔里木盆地, 奥陶系, 礁, 成藏, 凝析气

Abstract: The Ordovician oil-gas field in Tazhong No.1 slope-break zone in Tarim basin is the first large-sized field where the reservoir is dominated by reef and shoal complex facies. This field is characterized by big differences of testing production and gas/oil ratio in different wells, complex oil and gas properties, having both normal oil and gas condensate, generally containing H2S in natural gas, and varied contents of non-hydrocarbon gas in different well blocks. The study shows that the gas is rich in the northern part and the oil is rich in the southern part; such distinctive oil and gas in sectional distribution mainly originated in the Cambrian. It is concluded that Himalayan movement is the main reason for forming this large-sized field of Ordovician due to cosmically gas invasion and better preserved conditions in this area.

Key words: Tarim basin, Ordovician, reef, oil-gas accumulation, condensate gas

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