ON CHARACTERS OF OIL/GAS AND POOL-FORMING MODEL IN THE MIDDLE TARIM BASIN
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摘要: 本文通过对塔中地区现今工业性油气、稠油及储层沥青的微观今貌特征的研究,结合宏观地质背景,探讨了塔中地区油气成藏及演化模式。研究表明,本区现今油气藏主要形成于喜山成工藏期,而早期成藏的油气因受不同程度的破坏仅以储层沥青和氧化残留油的形态保存下来。来自西北方向海相为主的混源油和来自东北方向海相为主的凝析气、于气形成了现今的油气藏。Abstract: Based on a combination of the microcosmic characteristics of present industrial oil and gas,viscous crude oil and reservoir bitumen,and the macroscopic geological settings in the middle area of Tarim basin,the authors studied the models for petroleum pool-forming and evolution in that region. It is indicated that the present oil reservoirs there had formed mainly in the Himalayan pool-forming stage,however,the oil and gas in the early-formed pools were preserved only in the forms of reservoir bitumen and redox residual oil,as they being damaged to different extents. The present oil/gas reservoirs mainly consist of marine oils of miscible sources from the northwest and marine condensate gas and dry gas from the northeast.
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[1] 塔里木石油勘探开发指挥部主编.塔里木盆地油气勘探论文集.乌鲁木齐:新疆人民出版社,1992 [2] 邱蕴玉.油气聚集保存的时间性和有效性分析-油气有效成藏期及有效成藏组合研究.中国海上油气地质,1994,(5) [3] 邱蕴玉,徐濂等.威远气田成藏模式初探.天然气工业,1994.(1)
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