石油学报 ›› 1992, Vol. 13 ›› Issue (3): 19-26.DOI: 10.7623/syxb199203004

• 地质勘探 • 上一篇    下一篇

沉积载荷致密排水对沉积盆地温度结构和成油窗口的影响

石耀霖1, 王其允2   

  1. 1. 中国科学院中国科技大学研究生院;
    2. 美国伯克利加州大学地质和地球物理系
  • 收稿日期:1989-01-20 出版日期:1992-07-25 发布日期:2013-07-08
  • 作者简介:石耀不,1944年生.1966年中国科学技术大学地球物理系毕业,1986年在矢国伯利克加州大字获地球物理博士学位.现任中国科学技术大学研究生院教授.通讯处:北京.
  • 基金资助:
    国家自然科学基金

GEOTHERMS AND OIL GENERATION WINDOW IN SEDIMENTARY BASINS THERMAL EFFECTS OF COMPACTION AND DISCHARGE

Shi Yaolin1, Wang Qiyuen2   

  1. 1. Graduate School, USTC, Academia, Sinica, Beijing, China;
    2. Department of Geology and Geophysics, University of California, Berkeley, USA
  • Received:1989-01-20 Online:1992-07-25 Published:2013-07-08

摘要: 石油生成需要适当的温度条件,根据地热演化历史可以计算TTI值并定量估计成油窗口的位置.从而确定石油钻探需要达到的最大深度.本文根据盆地沉积史的地质资料和沉积物水文、热学和力学性质的实验室分析资料.对变形—孔隙水—热传输的非线性耦合问题进行了有限单元法计算.在不同而复杂的地质—热演化条件下,对地温、孔隙水压力和TTI值作出了全面估算.更加精确地确定了成油窗口的位置.

关键词: 沉积盆她, 热演化, 有限单元法, 成油窗口

Abstract: Time-Temperature-Index(TTI)is used in petroleum geology to estimate the location of oil generation window.However,previous method for computation of TTI neglects the thermal effects of compaction of sediments and discharge of porous fluids.It also makes an oversimplification that heat flows in the basin is kept unchanged during the whole sedimentary history and properties of sediments do not vary during their consolidation.In this paper,a new method is proposed to estimate the evolution of both the geotherms and the pore pressure.Geological evidences about the sedimentary history are used to constrain the model parameters and boundary conditions.Experimental results provide the material properties for computation.Finite element technique is applied to solve the coupled nonlinear problem of compaction,discharge,and heat transfer.In comparison with the previous method,this method gives improved results for simple examples,and is able to deal with much more complicated situations.It will not only provide a better estimation of the oil-generation window,but also a better Understanding of the evolution of the sedimentary basin.