CAJ | 학술논문

通过近几年来对渤中坳陷烃源岩的研究认识到东下段存在一套有机质丰度较高、类型较好的中等—很好的成熟烃源岩，其中好—很好的烃源岩占有较大的比例，并且东下段有效烃源岩厚度大。但渤中坳陷东下段烃源岩的平面分布是不均匀的，表现为坳陷的南部优于北部，东部优于西部。东下段源岩生成的油气的分布与东下段烃源岩的分布特征一致。
통과근궤년래대발중요함경원암적연구인식도동하단존재일투유궤질봉도교고、류형교호적중등—흔호적성숙경원암，기중호—흔호적경원암점유교대적비례，병차동하단유효경원암후도대。단발중요함동하단경원암적평면분포시불균균적，표현위요함적남부우우북부，동부우우서부。동하단원암생성적유기적분포여동하단경원암적분포특정일치。
The Lower Dongying Formation exists a source rocks wi th relatively high concentration of organic matter and good organic type,especia lly,most of them are good and excellent,and they are very thick.For more importa nt,these source rocks are locating in oil window.But,their distribution is not h omogeneous,the southem part of the depression is better than the north,the easte rn part of the depression is better than the west.The distribution of oils deriv ed from the Dongying source rocks is conformed with the distribution of the lowe r Dongying source rocks.