摘要
用热模拟实验研究了珠江口盆地某钻井中一段下第三系文昌组富含C_(30)4-甲基甾烷的泥岩生油岩,证明它是一类热稳定化合物。该段泥岩生油岩是盆内特殊沉积环境下的产物,它为盆地内原油提供了丰富的4-甲基甾烷而成为重要油源之一。对它的深入研究将有助于油源对比和远景评价。此外,当模拟温度为400和500℃时,另外一种构型的4-甲基甾烷被检出,其成因有两种可能性。
Thermo-simulation was mede on mudstone source rocks of the Wenchang Formationdrilled in the Pearl River Mouth Basin. The result indicates that the abundant C_(30) 4-methylsteranes contained in the source rocks were thermally stable. Nevertheless,the source rockswere the products of special dipositional environment,andwere part of the significant oilsources in the basin since they contributed abunhant C_(30) 4-methyl steranes to the crude oilsfound in the basin. Therefore, it would be much helpful for oil-source correlation and re-serve assessment of the basin if a thorough investigation on the source rocks is made. Inaddition, after 400℃ and 500℃ heating, another configuration of C_(30) 4-methyl steraneswas identified from the extracts, of which the origin may have two probabilities.
出处
《石油与天然气地质》
EI
CAS
CSCD
北大核心
1991年第2期231-239,共9页
Oil & Gas Geology
