NUMERICAL MODELING ON PRESSURIZING CAUSED BY HYDROCARBON GENERATION
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摘要: 干酪根热解成烃作用是烃源岩中异常高压的重要成因之一。由于成烃增压作用主要是伴随生、排烃作用而发生的,因此很难直接进行恢复和计算,通常借助数值模拟方法来描述。通过成烃作用的物理化学机制建立了成烃增压机制的数学模型。该数学模型表明,生烃越多、干酪根与烃类流体的密度差越大、烃源岩越致密,则成烃增压强度就越大；天然气的生成比石油的生成具有更显著的增压效应。应用该数学模型可模拟研究烃源岩演化过程中的成烃增压,并能再现由此导致的微裂缝幕式排烃的地质过程。成烃增压数值模拟在我国几个典型含油气盆地中得到了有效的应用。Abstract: Generation of hydrocarbon from kerogen is one of important genetic types of abnormal pressure in source rock.Because the pressurizing caused by generation was taking place during the period of genera ting and expulsion,it is difficult to recover or calculate it directly.Usually it can be measured by numerical modeling.The mathematical model of pressurizing was built according to the physico chemical mechanism of generation.It shows that the more the generated hydrocarbon,and the more compact the source rock,the larger the intensity of pressurizing.The pressurizing caused by gas generation is stronger than that caused by oil generation.The pressurizing caused by generation can be modeled,and also the expulsion through microfracture caused by the pressurizing can be recovered by using this mathematical model.Numerical modeling on pressurizing caused by generation has been effectivelg applied in several typical petroleum basins in China.
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[1] 李明诚.石油与天然气运移.北京:石油工业出版社,1987 [2] 费特尔.异常地层压力——在油气资源勘探钻井和开采中的应用.1976.宋秀珍译.北京:石油工业出版社,1982 [3] 真柄钦次.压实与流体运移.1978.陈荷立等译.北京:石油工业出版社,1981. [4] Hedberg H D.M et hane generation and petroleum migration.AAPG Studies in Geology,No.10,1980 [5] 肖贤明等.烃类生成的显微岩石学特征研究.石油学报,1993,14(3):30-36 [6] Ungerer P.根据地球化学资料对烃类生成时有机质总体积膨胀的试算——初次运移的内涵.1981.见黄第藩等译.油气运移,第1集.北京:石油工业出版社,1988 [7] 陶一川.异常地层压力,数学模型分析与应用.地球科学,1992,17(5):571～579 [8] 徐思煌,何生,袁彩萍.烃源岩演化与生、排烃史模拟模型及其应用.地球科学,1995,20(3):335～341 [9] 徐思煌,梅廉夫,邓四新.西藏伦坡拉盆地烃源岩生、排烃史模拟.地球科学,1996,21(2):179～183 [10] Xu Sihuang.Numerical simulation of histories of hydrocarbon generation and expulsion in several typical basins in China.Proc.30th Int’1. Geol.Congr.Vol.18. Part A.Z.C.Sun et al(Eds),VSP,1997. -
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