RESTORATION ON GENERATING HYDROCARBON POTENTIALITY OF SOURCE ROCKS:A CASE OF LOWER ORDOVICIAN CARBONATES IN ORDOIS BASIN

Xia Xinyu; Hong Feng; Zhao Lin

doi:10.11743/ogg19980408

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RESTORATION ON GENERATING HYDROCARBON POTENTIALITY OF SOURCE ROCKS:A CASE OF LOWER ORDOVICIAN CARBONATES IN ORDOIS BASIN
Vol. 19, Issue 4, Pages: 307-312(1998)
Online First：25 December 1998，

Published：1998
DOI： 10.11743/ogg19980408
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DOI：

Xia Xinyu, Hong Feng, Zhao Lin. RESTORATION ON GENERATING HYDROCARBON POTENTIALITY OF SOURCE ROCKS:A CASE OF LOWER ORDOVICIAN CARBONATES IN ORDOIS BASIN[J]. 1998, 19(4): 307-312. DOI： 10.11743/ogg19980408.

摘要

烃源岩生烃潜力的不同恢复方法(热模拟实验法、元素法、降解率法、动力学法)都限于干酪根降解生烃理论的范畴。原始有机质类型较好、烃产物平均H/C较低以及高成熟烃源岩中间生成的液态烃排出较完全时

计算出的有机碳恢复系数要比相反的情况大很多。生烃量的计算是否准确依赖于上述条件确定得是否合理。生烃潜力恢复结果表明鄂尔多斯盆地下奥陶统碳酸盐岩是较差的烃源岩。

Abstract

Different restoring methods of hydrocarbon generation potential of source rock

including simulation method

element balance method

degradation ratio method and dynamic method are discussed.These methods are all restricted to the realm of hydrcarbon generation

theory of kerogen degradation.The accuracy of restoration results depend sensitively on the initial organic matter type

mean hydrogen/carbon ratio of hydrocarbon products and oil expulsion efficency from high mature source rock.The restoration coefficients of total organic carbon in different condition all have maximum values.Restoration results show that Lower Ordovician carbonate in the Ordos Basin is poor source rock.