新疆石油地质

›› 2014, Vol. 35 ›› Issue (6): 1-1.

• 论文 •    

北部湾盆地福山凹陷白莲洼陷烃源岩热史及成烃史模拟

陈善斌1，甘华军1，夏存银2，赵迎冬1，王观宏1，王祥1   

  1. (1.中国地质大学 资源学院,武汉 430074;2.中国石油 南方石油勘探开发有限责任公司,广州 510240)
  • 出版日期:2019-01-01 发布日期:1905-07-15

History Simulation of Thermal Evolution and Hydrocarbon Generation of Source Rocks in Bailian SubSag, Fushan Sag, Beibuwan Basin

CHEN Shanbin1, GAN Huajun1, XIA Cunyin2, ZHAO Yingdong1, WANG Guanhong1, WANG Xiang1   

  1. (1.Faculty of Earth Resources, China University of Geosciences, Wuhan, Hubei 430074,China; 2. Southern Petroleum Exploration and Development Co., Ltd, PetroChina, Guangzhou, Guangdong 510240, China)
  • Online:2019-01-01 Published:1905-07-15

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摘要： 白莲洼陷流沙港组烃源岩热史及成烃史研究可为福山凹陷油气资源评价提供基础参数。利用BasinMod盆地模拟软件，在重建地史的基础上应用EASY% Ro模型恢复白莲洼陷热史和成烃史。研究结果表明，福山凹陷在裂陷阶段早始新世初期热流值较高，最大为68.6 mW/m2，随后古热流逐渐减小，到晚中新世晚期热流值降为55.6 mW/m2，从上新世初期开始，热流值有所回升，现今热流值为57.8 mW/m2. 白莲洼陷流沙港组烃源岩进入生油门限（Ro=0.5%）时间为38×106a，达到生油高峰（Ro=1.0%）时间为30×106a，进入生气门限（Ro=1.3%）时间为20×106a. 白莲洼陷深洼地区流沙港组烃源岩埋深较大，成熟度更高，生烃能力更强，可为福山凹陷提供丰富的油气资源。

Abstract: In this paper, the thermal evolution and hydrocarbon generation history of source rocks in Bailian sub?sag of Fushan sag in Beibuwan basin are studied and recovered using BasinMod basin simulation software and EASY% Ro model, and the results show that the maximum value of hydrothermal flow in the rifting stage of the Early Eocene reached 68.6 mW/m2, and then deduced gradually to 55.6 mW/m2 by the end of Late Miocene. From the Early Pliocene, the value started to rise again and reaches about 57.8 mW/m2 at present. The Liusha?gang source rocks in Bailian sub?sag of Fushan sag entered into oil threshold of Ro=0.5% at about 38×106 a, reaching the hydrocarbon generation peak of Ro=1.0% at about 30×106 a, and at about 20×106 a, it entered into oil threshold of Ro=1.3%. Because the Liushagang source rock’s buried depth is larger, it has much higher maturity and stronger hydrocarbon generation capacity, which could provide abundant oil and gas resources for Fushan sag

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