石油学报 ›› 2003, Vol. 24 ›› Issue (5): 36-39,45.DOI: 10.7623/syxb200305008

• 地质勘探 • 上一篇    下一篇

烃源岩孔隙流体压力模拟新方法

何光玉1, 吴冲龙2, 吴景富3   

  1. 1. 浙江大学地球科学系, 浙江杭州, 310027;
    2. 中国地质大学资源学院, 湖北武汉, 430074;
    3. 中国海洋石油总公司勘探开发研究中心, 河北高碑店, 074010
  • 收稿日期:2002-06-11 修回日期:2002-09-23 出版日期:2003-09-25 发布日期:2010-05-21
  • 作者简介:何光玉,男,1968年9月生,1998年毕业于中国地质大学(武汉),获博士学位,同年进入南京大学地球科学系从事博士后研究工作,现在浙江大学地球科学系从事第二站博士后研究工作,副教授.
  • 基金资助:
    国家自然科学基金项目(No.49832040)"塔里木与天山造山造盆耦合关系及大陆动力学"和中国海洋石油总公司"九五"重点攻关项目(No.9618)"中国近海油气成藏动力学模拟系统研制"资助.

A new simulation method for porosity fluid pressure of Hydrocarbon source rocks

HE Guang-yu1, WU Chong-long2, WU Jing-fu3   

  1. 1. Department of Earth Sciences, Zhejiang University, Hangzhou 310027, China;
    2. College of Resources, China University of Geo-Science, Wuhan 430074, China;
    3. Exploration and Development Institute of CNOOC, Gaobeidian 074010, China
  • Received:2002-06-11 Revised:2002-09-23 Online:2003-09-25 Published:2010-05-21

摘要: 基于系统动力学的基本原理,对烃源岩孔隙流体压力进行了模拟研究.结果表明,成熟烃源岩演化过程中存在着一个压力反馈控制系统.该系统包含两个次级系统,即压力增加次级反馈控制系统和压力降低次级反馈控制系统.前者是由压力与生烃组成的负反馈控制系统,在其作用下孔隙流体压力不断增加;后者是由压力与排烃组成的负反馈控制系统,在其作用下孔隙流体压力不断降低.在常规模拟方法的基础上,依据系统动力学的建模方法,建立了系统动力学模拟的新模型.该模型主要由水位方程、速率方程、辅助方程和初值方程这种方程组成,它们都是一些简单的线性方程.以新疆库车盆地为实例进行的模拟研究结果表明,该方法简单可行.

关键词: 烃源岩, 流体压力, 反馈控制, 系统动力学, 模拟方法, 库车盆地

Abstract: Based on the theory of system dynamics,the fluid pressure in pores of hydrocarbon source rocks was simulated.The results show that there is a pressure-feedback control system during the evolving process of matured source rocks.The control system consists of two subsystems,namely pressure increase subsystem and pressure decrease subsystem.The former is such a subsystem that encompasses mainly the processor of hydrocarbon generation and thus influences the pressure increase.The latter is mainly under the control of the processors of hydrocarbon expulsion and thus influences the pressure decrease accordingly.Based on the above analysis,a new model was constructed.This model consists mainly of four kinds of simple line equations such as water level equation,velocity equation,auxiliary equation and initial equation.A program was also designed on the new model and used to study the characteristics of porosity fluid pressure in the evolution of hydrocarbon source rocks in Kuqa rejuvenated foreland basin of the northwestern China.The simulation result indicates that the new method is very simple in operation.

Key words: hydrocarbon source rock, fluid pressure, feedback control, system dynamics, simulation, Kuqa Basin

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