SIMULATION EXPERIMENTS OF HYDROCARBON-EXPELLING OF SOURCE ROCKS AND APPARENT OIL-EXPELLONG EFFICIENCY OF THE TARIM BASIN
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摘要: 用模拟实验和多元汽液平衡模拟计算结果,分析了样品的地球化学性质、生烃过程以及实验温度对实验排油效率的影响.认识到生油是排油的主要动力,热蒸发是热压排烃模拟实验视排油效率失真的主要因素.在此基础上,给出了定量评价实验排油效率可信度指标和合理的视排油效率算法.Abstract: Based on the simulating experiments and calculated results of multivariant gas-liquid balance sitnulation,the geochemical characters and hydrocarbon-generating processcs of samples and the influnce of experimental temperature on oil-expelling efficiency were analysed.The authors recognized that oil generation was a main motive force for oil-expelling;thermal evaporation was a major factor resulting in a false apparent oil-expelling efficiency in the thermal pressure oil-expelling experiment.On this hasis,a confidence index for quantitative evaluation of experimental oil-expelling efficiency and a reasonable calculating method of apparent oil-expelling efficiency were suggested.
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[1] 陈发景等.压实与油气运移.武汉:中国地质大学出版社,1989 [2] Lafargue E et al,Experimental simulation of hydrocarbons expulsion,Org. Ceochem.1990.16(1-3) [3] 汪本善,程克明等,油气运移研究-泌阳盆地剖析.北京:石油工业出版社,1994 [4] Dickey P A. Possible primary migration of oil from source rocka in oil phase. AAPG. Bull. 1975. 59(2) [5] Magara K.,The significance of the expulsion of water in oil-phase primary migration. Bnll. Conodia Pnrvleam Geology. 1978. 26,123-131 -
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