松辽盆地地热场

本文实测了65口井的地热数据,从中取得17个大地热流值,松辽盆地地热场具有中部高边部低,并呈环状分布,该区地热具有高特征的地质发展历史。分区计算盆地的沉积岩层、花岗岩质层和玄武岩质层各底部的温度和热流值,也都具有中部高边部低的变化趋势。分析了盆地地热场受影响的状况和地热高的主要原因。还分析了盆地地热场与构造活动性、地震活动性、重磁力场、岩石圈厚度的关系,以及与石油生成、运移和富集的关系。

THE GEOTHERMAL FIELD IN SONGLIAO BASIN

In this paper, 17 terrestrial heat flow values have been obtained according to the logging data in 65 wells. The Songliao Basin not only features a comparatively high geothermal field, but also shows a well defined regionali-zation. The geothermal field value is higher in the inner area and lower outside showing a ring distribution, which is determined by the history of geological development. The thermal structure of crust and upper mantle in the inner area and outside in Songliao Basin has been suggested. Effects on the geothermal field and major causes of high geothermal field in the Basin have been analysed. And the relationship between geothermal field and tectonic activity, earthquake activity, gravitational-magnetic field and lithospheric thickness, and the relationship between geothermal field and the formation, migration and accumulation of oil have also been analysed.