江汉盆地钻井地温测量和大地热流分布

徐明1; 2  赵平1  朱传庆1; 2  单竞男1; 2  胡圣标1

江汉盆地钻井地温测量和大地热流分布

- 1.
  中国科学院地质与地球物理研究所北京 100029
- 2.
  中国科学院研究生院北京 100039

详细信息

中图分类号: P542,P314.2

收稿日期: 2009-04-26

修回日期: 2009-10-22

录用日期: 2009-01-25

刊出日期: 2010-01-25

Borehole temperature logging and terrestrial heat flow distribution in Jianghan Basin

- 1.
  Institute of Geology and Geophysics|Chinese Academy of Science|Beijing 100029
- 2.
   2.Graduate School of Chinese Academy of Sciences| Beijing 100039

Received Date: 26 April 2009

Revised Date: 22 October 2009

Accepted Date: 25 January 2009

Publish Date: 25 January 2010

摘要

摘要: 盆地的稳态温度是分析地温场和大地热流的基础，是盆地构造热演化的必要前提。本文根据最新获得的9口钻井的稳态温度数据和124块岩石热导率，结合已有资料对江汉盆地地温梯度和大地热流进行了系统分析。结果显示江汉盆地热流419～609 mW/m2，平均523 mW/m2，盆地总体表现为较低的大地热流，反映了中新生代以来构造活动逐渐减弱，盆地不断冷却的结果；从盆地内热流分布看，热流分布南高北低，反映了江汉盆地构造活动的不均一性。
- 钻井地温测量地温梯度大地热流江汉盆地
Abstract: Based on the newly obtained borehole steady temperature data from 9 holes together with thermal conductivities of 124 core samples，we analyze the distribution of geotemperature and terrestrial heat flow in Jianghan Basin. The present temperature gradients vary from 2836 to 3932 ℃/km，lower temperature gradients is observed in the Cenozoic Basin margin and higher gradients are obtained in the Cenozoic Basin. The determined thermal conductivity values vary from 0882 to 678 W/m?K and the calculated heat flow values in Jianghan Basin range from 419 to 609 mW/m2，with a average of 523 mW/m2.It shows that the influence of tectonothermal event before Cenozoic in Jianghan Basin has faded away，and the basin has cooled down.
- Borehole temperature logging，Temperature gradient，Terrestrial heat flow，Jianghan Basin

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江汉盆地钻井地温测量和大地热流分布

Borehole temperature logging and terrestrial heat flow distribution in Jianghan Basin

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