石油地质与工程2025，Vol.39Issue(1)：39-46,8.
渤中凹陷东三段源岩生排烃模拟实验
Simulation experiment on hydrocarbon generation and expulsion of source rocks in the third member of Dongying Formation,Bozhong Sag
摘要
Abstract
The third member of Dongying Formation(E3d3)in Bohai Bay Basin is a unique hydrocarbon source layer of Bohai Sea which belongs to medium or good lacustrine source rock.To study the hydrocarbon generation and expulsion characteristics,a set of semi-open system hydrocarbon generation and expulsion simulation experiments are carried with the E3d3 dark mudstone of Ⅱ 1 type and low-mature with TOC con-tent.Based on its thermal and burial history,a semi-open system simulation experiment for hydrocarbon generation and expulsion was designed and implemented.The results indicate that the Dongying Formation in the Bozhong Sag has a large scale of source rocks and high organic matter maturity.The liquid hydrocar-bons in the source have good fluidity,sufficient formation pressure,and high hydrocarbon expulsion effi-ciency.It is concluded that the E3d3 lacustrine mudstones of the Bohai Sea have the characteristics of"oil generating and retaining"in the low-middle maturity stage and"gas producing and oil expulsing"in the medium-high maturity stage.Mature evolution has a great impact on hydrocarbon generation,hydrocarbon expulsion and hydrocarbon retention characteristics of the E3d3 mudstone,which is the key factor for the ef-fective hydrocarbon supply of the Dongying Formation.A hydrocarbon generation,expulsion,and retention evolution model was proposed for the equivalent maturity range of 0.51％～1.89％of lacustrine mudstone in E3d3,which provides experimental reference for the research on the effective hydrocarbon supply,hydro-carbon retention and hydrocarbon conversion of the ultra-deep and highly evolved source rocks in the E3d3 formation of the Bozhong Sag,and also lays a foundation for resource potential evaluation of lacustrine mud-stone of Dongying Formation in Bohai Sea.关键词
渤海海域/东营组烃源岩/半开放体系模拟实验/油产率校正/生排烃特征Key words
Bohai Sea/source rocks of Dongying Formation/semi-open system simulation experiment/oil yield correction/hydrocarbon generation and expulsion characteristics分类
能源科技引用本文复制引用
李阔,王飞龙,王波,王广源,程焱,王晓东..渤中凹陷东三段源岩生排烃模拟实验[J].石油地质与工程,2025,39(1):39-46,8.基金项目
中海油集团公司科研条件平台建设项目(CNOOC-KJPTGCJS2020-01). （CNOOC-KJPTGCJS2020-01）
