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

发布时间：2018-03-05 16:18

本文选题：富氢　切入点：超压　出处：《石油实验地质》2017年01期 　论文类型：期刊论文

【摘要】：在考虑富氢和超压对镜质组反射率的抑制作用下,对传统仅考虑了温度和时间的镜质组反射率计算模型——Easy%R_o模型进行了重新校正。通过引进富氢校正系数和超压抑制系数,建立起适合双重抑制背景下镜质组反射率计算模型,并利用渤海湾盆地渤中西次凹受双重抑制作用和未受双重抑制作用影响的镜质组反射率R_o实测资料,确定了相关参数。模拟结果表明,在双重抑制作用影响的地层中,镜质组反射率Ro的模拟值与实测值吻合较好,但与Easy%R_o模型的计算结果相差悬殊,双重抑制作用对R_o的影响可达0.2%~0.4%。超压抑制了有机质热演化,导致生烃门限下移和生烃时间延迟,这非常有利于油气晚期成藏。
[Abstract]:Taking into account the effect of hydrogen enrichment and overpressure on vitrinite reflectance, the traditional calculation model of vitrinite reflectance, EasyRo model, which only considers temperature and time, is recalibrated. By introducing hydrogen rich correction coefficient and overpressure suppression coefficient, A model for the calculation of vitrinite reflectance in the context of double suppression is established, and the measured data of vitrinite reflectance Rapio, which is not affected by the double inhibition and is not affected by the double inhibition, are used in Bohai Bay Basin. The simulation results show that the simulated values of vitrinite reflectance R _ o are in good agreement with the measured values, but are far different from those of the Easy%R_o model. The effect of double inhibition on R _ S _ o is 0.20.0.The overpressure inhibits the thermal evolution of organic matter, resulting in the lower threshold of hydrocarbon generation and the delay of hydrocarbon generation time, which is very beneficial to late hydrocarbon accumulation.
【作者单位】：中海石油(中国)有限公司天津分公司渤海石油研究院;
【基金】：国家重大专项“渤海海域大中型油气田地质特征”(2011ZX05023-006-002) 国家自然科学基金项目(U1262106,41572135)资助
【分类号】：P618.13

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