摘要
应用多种有机地球化学参数，对阳信洼陷烃源岩的有机质丰度、类型及成熟度随深度的演化特征进行了研究，结果表明：沙三段和沙一段烃源岩有机质丰度高，类型好，而烃转化率较低；沙四段烃源岩有机质丰度较低，类型较差，但烃转化率高。将烃源岩有机质热演化划分为3个阶段：0～1550m为未成熟生物气阶段；1550～2600m为低熟油阶段；深度大于2600m为成熟油阶段。阳信洼陷主力烃源岩为沙四段和沙三段，这2个层段是今后勘探的重点。
The organic matters abundance,type and evolution of maturation with depth of source rocks in Yangxin Subsag are studied using various organic geochemical parameters. The results show that the hydrocarbon generation ratio of Es, and Es3 source rocks is relatively low with relatively high organic matters abundance and good organic material type, the hydrocarbon generation ratio of Es4 source rocks is relatively high with relatively low organic matters abundance and poor organic material type. The thermal evolution of source rocks in Yangxin Subsag is divided into immature biogas, low-mature oil and mature oil stage with corresponding burial depth of 0 - 1 550m, 1550- 2600m and over 2 600m. Es3and Es4 source rocks are the main source rocks,being the most important intervals in the next exploration process.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2007年第2期47-50,共4页
Petroleum Geology and Recovery Efficiency
