石油学报 ›› 2000, Vol. 21 ›› Issue (1): 34-39.DOI: 10.7623/syxb200001006

• 地质勘探 • 上一篇    下一篇

塔里木盆地石炭系生烃潜力的模糊数学综合评价

程顶胜, 刘松, 吴培红   

  1. 石油勘探开发科学研究院遥感所, 北京100083
  • 收稿日期:1998-08-01 修回日期:1998-12-06 出版日期:2000-01-25 发布日期:2010-05-21
  • 作者简介:程顶胜,男,1966年8月生.1995年毕业于北京石油大学.现为石油勘探开发科学研究院(北京)工程师、博士.通讯处:北京910信箱.

COMPREHENSIVE EVALUATION BY FUZZY MATHEMATICS ON HYDROCARBON GENERATION POTENTIAL OF CARBONIFEROUS SOURCE ROCKS IN TARIM BASIN

CHENG Ding-sheng   

  1. Research Institute of Petroleum Exploration and Development, Beijing
  • Received:1998-08-01 Revised:1998-12-06 Online:2000-01-25 Published:2010-05-21

摘要: 运用石油资源量定量评价的一种新方法--模糊数学法,对塔里木盆地石炭系烃源岩不同沉积有机相的生烃潜力进行评价预测,该方法不同于前人常用的盆地模拟法、趋势面分析法、干酪根降解动力学法等,它是将地质变量作为模糊变量,用模糊数学的原理进行计算.将石炭系烃源岩的厚度、有机质丰度、有机质类型、有机质成熟度及沉积有机相作为模糊变量,计算不同沉积有机相烃源岩生烃潜力.计算结果表明,开阔台地沉积有机相和半闭塞台地沉积有机相生烃潜力最大,蒸发台地沉积有机相和开放泻湖沉积有机相的生烃潜力次之,并根据计算结果,指出塔里木盆地西部石炭系烃源岩发育,在合适的构造条件下最有可能钻遇石炭系自生自储自盖式的大油气藏,同时应重视塔里木盆地东部地区石炭系泥质烃源岩的生烃贡献.

关键词: 塔里木盆地, 石炭系, 沉积有机相, 生烃潜力评价, 模糊数学

Abstract: Evaluation and prediction on hydrocarbon generation potentials of various sedimentary organic facies of carboniferous source rocks in Tarim Basin were carried out in this paper by fuzzy mathematics, a new method for quantitative petroleum resources evaluation. This method is different from the methods of basin modeling trend surface analysis, kerogen degradation dynamics et al. With this method, geological variables are taken as fuzzy variables and calculation is carried out based on the theory of fuzzy mathematics. In this paper, parameters of thickness, organic matter abundance, organic matter type, organic matter maturation and sedimentary organic facies of Carboniferous source rocks were taken as fuzzy variables to calculate hydrocarbon generation potential of source rocks in various sedimentary organic facies. The calculation results indicate that hydrocarbon generation potential of open platform and semi-restricated platform sedimentary organic facies are best, which are followed by evaporated platform and open lagoon sedimentary organic facies. From the calculation results, the authors put forward that Carboniferous source rocks are well-developed in the western Tarim and possible big oil and gas pools can be found which may be self-generated, self-reservored and self-capped under suitable structures. Meanwhile, we should pay attention to the hydrocarbon generation of Carboniferous argillaceous source rocks in the eastern Tarim.

Key words: Tarim Basin, Carboniferous, sedimentary organic facies, hydrocarbon generation potential evaluation, fuzzy mathematics

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