石油实验地质2017，Vol.39Issue(1)：106-111,119,7.DOI:10.11781/sysydz201701106
超压和富氢背景下镜质组反射率计算模型--以渤海湾盆地渤中西次凹东三段烃源岩为例
Vitrinite reflectance modeling under overpressure retardation and hydrogen suppression:A case study of source rocks from the third member of Dongying Formation, West Bozhong Sub-depression,Bohai Bay Basin
摘要
Abstract
The Easy%Ro model,in which only temperature and time were considered,was calibrated to take into consideration the suppression of vitrinite reflectance by hydrogen⁃rich organic matter and overpressure. A new model was developed by introducing a hydrogen⁃rich correction coefficient and overpressure inhibiting coefficient. Using the data collected from both the double⁃suppressed wells and the normal wells in the West Bozhong Sub⁃depression of Bohai Bay Basin,China, some relative parameters were determined and the model was tested. The results show that the computed vitrinite reflectance values in double⁃suppressed formation agree with the mea⁃sured data,but are significantly different from those predicted by the Easy%Romodel.And the vitrinite reflectance values were reduced by 0.2%~0.4% in double⁃suppressed formations. Organic matter maturation was retarded by overpressure.It led to the increase of depths of the hydrocarbon generation threshold and the delay of time of hydrocarbon generation,which was advantageous for late hydrocarbon accumulation.关键词
富氢/超压/镜质组反射率/化学动力学模型/烃源岩/渤中西次凹/渤海湾盆地Key words
rich-hydrogen/overpressure/vitrinite reflectance/kinetic model/source rock/West Bozhong Sub-depression/Bohai Bay Basin分类
能源科技引用本文复制引用
胡安文,李慧勇,江涛,许鹏,史盼盼..超压和富氢背景下镜质组反射率计算模型--以渤海湾盆地渤中西次凹东三段烃源岩为例[J].石油实验地质,2017,39(1):106-111,119,7.基金项目
国家重大专项“渤海海域大中型油气田地质特征”（2011ZX05023－006－002）和国家自然科学基金项目（U1262106，41572135）资助。 （）
